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<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
54.6
monetaryItemType
table: <entity> 54.6 </entity> <entity type> monetaryItemType </entity type> <context> Accrued Taxes | 54.6 | 51.0 </context>
us-gaap:TaxesPayableCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
51.0
monetaryItemType
table: <entity> 51.0 </entity> <entity type> monetaryItemType </entity type> <context> Accrued Taxes | 54.6 | 51.0 </context>
us-gaap:TaxesPayableCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
23.4
monetaryItemType
table: <entity> 23.4 </entity> <entity type> monetaryItemType </entity type> <context> Accrued Interest | 23.4 | 21.1 </context>
us-gaap:InterestPayableCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
21.1
monetaryItemType
table: <entity> 21.1 </entity> <entity type> monetaryItemType </entity type> <context> Accrued Interest | 23.4 | 21.1 </context>
us-gaap:InterestPayableCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
94.7
monetaryItemType
table: <entity> 94.7 </entity> <entity type> monetaryItemType </entity type> <context> Long-Term Debt Due Within One Year | 94.7 | 111.4 </context>
us-gaap:LongTermDebtCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
111.4
monetaryItemType
table: <entity> 111.4 </entity> <entity type> monetaryItemType </entity type> <context> Long-Term Debt Due Within One Year | 94.7 | 111.4 </context>
us-gaap:LongTermDebtCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
117.9
monetaryItemType
table: <entity> 117.9 </entity> <entity type> monetaryItemType </entity type> <context> Other | 117.9 | 91.9 </context>
us-gaap:OtherLiabilitiesCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
91.9
monetaryItemType
table: <entity> 91.9 </entity> <entity type> monetaryItemType </entity type> <context> Other | 117.9 | 91.9 </context>
us-gaap:OtherLiabilitiesCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
404.2
monetaryItemType
table: <entity> 404.2 </entity> <entity type> monetaryItemType </entity type> <context> Total Current Liabilities | 404.2 | 377.6 </context>
us-gaap:LiabilitiesCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
377.6
monetaryItemType
table: <entity> 377.6 </entity> <entity type> monetaryItemType </entity type> <context> Total Current Liabilities | 404.2 | 377.6 </context>
us-gaap:LiabilitiesCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
1704.7
monetaryItemType
table: <entity> 1704.7 </entity> <entity type> monetaryItemType </entity type> <context> Long-Term Debt | 1,704.7 | 1,679.9 </context>
us-gaap:LongTermDebtNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
1679.9
monetaryItemType
table: <entity> 1679.9 </entity> <entity type> monetaryItemType </entity type> <context> Long-Term Debt | 1,704.7 | 1,679.9 </context>
us-gaap:LongTermDebtNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
253.4
monetaryItemType
table: <entity> 253.4 </entity> <entity type> monetaryItemType </entity type> <context> Deferred Income Taxes | 253.4 | 192.7 </context>
us-gaap:DeferredIncomeTaxLiabilitiesNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
192.7
monetaryItemType
table: <entity> 192.7 </entity> <entity type> monetaryItemType </entity type> <context> Deferred Income Taxes | 253.4 | 192.7 </context>
us-gaap:DeferredIncomeTaxLiabilitiesNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
570.5
monetaryItemType
table: <entity> 570.5 </entity> <entity type> monetaryItemType </entity type> <context> Regulatory Liabilities | 570.5 | 574.0 </context>
us-gaap:RegulatoryLiabilityNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
574.0
monetaryItemType
table: <entity> 574.0 </entity> <entity type> monetaryItemType </entity type> <context> Regulatory Liabilities | 570.5 | 574.0 </context>
us-gaap:RegulatoryLiabilityNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
118.2
monetaryItemType
table: <entity> 118.2 </entity> <entity type> monetaryItemType </entity type> <context> Defined Benefit Pension and Other Postretirement Benefit Plans | 118.2 | 160.8 </context>
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
160.8
monetaryItemType
table: <entity> 160.8 </entity> <entity type> monetaryItemType </entity type> <context> Defined Benefit Pension and Other Postretirement Benefit Plans | 118.2 | 160.8 </context>
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
312.8
monetaryItemType
table: <entity> 312.8 </entity> <entity type> monetaryItemType </entity type> <context> Other Non-Current Liabilities | 312.8 | 264.3 </context>
us-gaap:OtherLiabilitiesNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
264.3
monetaryItemType
table: <entity> 264.3 </entity> <entity type> monetaryItemType </entity type> <context> Other Non-Current Liabilities | 312.8 | 264.3 </context>
us-gaap:OtherLiabilitiesNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
3363.8
monetaryItemType
table: <entity> 3363.8 </entity> <entity type> monetaryItemType </entity type> <context> Total Liabilities | 3,363.8 | 3,249.3 </context>
us-gaap:Liabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
3249.3
monetaryItemType
table: <entity> 3249.3 </entity> <entity type> monetaryItemType </entity type> <context> Total Liabilities | 3,363.8 | 3,249.3 </context>
us-gaap:Liabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
0.4
monetaryItemType
table: <entity> 0.4 </entity> <entity type> monetaryItemType </entity type> <context> Redeemable Non-Controlling Interest | 0.4 | 0.5 </context>
us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
0.5
monetaryItemType
table: <entity> 0.5 </entity> <entity type> monetaryItemType </entity type> <context> Redeemable Non-Controlling Interest | 0.4 | 0.5 </context>
us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
80.0
sharesItemType
table: <entity> 80.0 </entity> <entity type> sharesItemType </entity type> <context> None </context>
us-gaap:CommonStockSharesAuthorized
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
57.9
sharesItemType
table: <entity> 57.9 </entity> <entity type> sharesItemType </entity type> <context> None </context>
us-gaap:CommonStockSharesIssued
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
57.9
sharesItemType
table: <entity> 57.9 </entity> <entity type> sharesItemType </entity type> <context> None </context>
us-gaap:CommonStockSharesOutstanding
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
57.6
sharesItemType
table: <entity> 57.6 </entity> <entity type> sharesItemType </entity type> <context> None </context>
us-gaap:CommonStockSharesOutstanding
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
57.6
sharesItemType
table: <entity> 57.6 </entity> <entity type> sharesItemType </entity type> <context> None </context>
us-gaap:CommonStockSharesIssued
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
1823.2
monetaryItemType
table: <entity> 1823.2 </entity> <entity type> monetaryItemType </entity type> <context> Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding | 1,823.2 | 1,803.7 </context>
us-gaap:CommonStockValue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
1803.7
monetaryItemType
table: <entity> 1803.7 </entity> <entity type> monetaryItemType </entity type> <context> Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding | 1,823.2 | 1,803.7 </context>
us-gaap:CommonStockValue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
18.1
monetaryItemType
table: <entity> 18.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
20.5
monetaryItemType
table: <entity> 20.5 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
1042.9
monetaryItemType
table: <entity> 1042.9 </entity> <entity type> monetaryItemType </entity type> <context> Retained Earnings | 1,042.9 | 1,026.4 </context>
us-gaap:RetainedEarningsAccumulatedDeficit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
1026.4
monetaryItemType
table: <entity> 1026.4 </entity> <entity type> monetaryItemType </entity type> <context> Retained Earnings | 1,042.9 | 1,026.4 </context>
us-gaap:RetainedEarningsAccumulatedDeficit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
2848.0
monetaryItemType
table: <entity> 2848.0 </entity> <entity type> monetaryItemType </entity type> <context> Total ALLETE Equity | 2,848.0 | 2,809.6 </context>
us-gaap:StockholdersEquity
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
2809.6
monetaryItemType
table: <entity> 2809.6 </entity> <entity type> monetaryItemType </entity type> <context> Total ALLETE Equity | 2,848.0 | 2,809.6 </context>
us-gaap:StockholdersEquity
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
542.1
monetaryItemType
table: <entity> 542.1 </entity> <entity type> monetaryItemType </entity type> <context> Non-Controlling Interest in Subsidiaries | 542.1 | 597.0 </context>
us-gaap:MinorityInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
597.0
monetaryItemType
table: <entity> 597.0 </entity> <entity type> monetaryItemType </entity type> <context> Non-Controlling Interest in Subsidiaries | 542.1 | 597.0 </context>
us-gaap:MinorityInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
3390.1
monetaryItemType
table: <entity> 3390.1 </entity> <entity type> monetaryItemType </entity type> <context> Total Equity | 3,390.1 | 3,406.6 </context>
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
3406.6
monetaryItemType
table: <entity> 3406.6 </entity> <entity type> monetaryItemType </entity type> <context> Total Equity | 3,390.1 | 3,406.6 </context>
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
6754.3
monetaryItemType
table: <entity> 6754.3 </entity> <entity type> monetaryItemType </entity type> <context> Total Assets | $ 6,754.3 | $ 6,656.4 </context>
us-gaap:LiabilitiesAndStockholdersEquity
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td></tr><tr><td>Current Assets</td><td></td><td></td></tr><tr><td>Cash and Cash Equivalents</td><td>$ 32.8</td><td></td><td>$ 71.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 ) Accounts Receivable (Less Allowance of $ 1.7 and $ 1.6 )</td><td>148.1</td><td></td><td>137.2</td><td></td></tr><tr><td>Inventories – Net</td><td>154.6</td><td></td><td>175.4</td><td></td></tr><tr><td>Prepayments and Other</td><td>99.7</td><td></td><td>83.6</td><td></td></tr><tr><td>Total Current Assets</td><td>435.2</td><td></td><td>468.1</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>5,181.5</td><td></td><td>5,013.4</td><td></td></tr><tr><td>Regulatory Assets</td><td>371.7</td><td></td><td>425.4</td><td></td></tr><tr><td>Equity Investments</td><td>340.1</td><td></td><td>331.2</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Goodwill and Intangible Assets – Net</td><td>155.3</td><td></td><td>155.4</td><td></td></tr><tr><td>Other Non-Current Assets</td><td>270.5</td><td></td><td>262.9</td><td></td></tr><tr><td>Total Assets</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Liabilities, Redeemable Non-Controlling Interest and Equity</td><td></td><td></td></tr><tr><td>Liabilities</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td></td><td></td></tr><tr><td>Accounts Payable</td><td>$ 113.6</td><td></td><td>$ 102.2</td><td></td></tr><tr><td>Accrued Taxes</td><td>54.6</td><td></td><td>51.0</td><td></td></tr><tr><td>Accrued Interest</td><td>23.4</td><td></td><td>21.1</td><td></td></tr><tr><td>Long-Term Debt Due Within One Year</td><td>94.7</td><td></td><td>111.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>117.9</td><td></td><td>91.9</td><td></td></tr><tr><td>Total Current Liabilities</td><td>404.2</td><td></td><td>377.6</td><td></td></tr><tr><td>Long-Term Debt</td><td>1,704.7</td><td></td><td>1,679.9</td><td></td></tr><tr><td>Deferred Income Taxes</td><td>253.4</td><td></td><td>192.7</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>570.5</td><td></td><td>574.0</td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans</td><td>118.2</td><td></td><td>160.8</td><td></td></tr><tr><td>Other Non-Current Liabilities</td><td>312.8</td><td></td><td>264.3</td><td></td></tr><tr><td>Total Liabilities</td><td>3,363.8</td><td></td><td>3,249.3</td><td></td></tr><tr><td>Commitments, Guarantees and Contingencies (Note 9)</td><td></td><td></td></tr><tr><td>Redeemable Non-Controlling Interest</td><td>0.4</td><td></td><td>0.5</td><td></td></tr><tr><td>Equity</td><td></td><td></td></tr><tr><td>ALLETE Equity</td><td></td><td></td></tr><tr><td>Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding Common Stock Without Par Value, 80.0 Shares Authorized, 57.9 and 57.6 Shares Issued and Outstanding</td><td>1,823.2</td><td></td><td>1,803.7</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td>( 18.1 )</td><td></td><td>( 20.5 )</td><td></td></tr><tr><td>Retained Earnings</td><td>1,042.9</td><td></td><td>1,026.4</td><td></td></tr><tr><td>Total ALLETE Equity</td><td>2,848.0</td><td></td><td>2,809.6</td><td></td></tr><tr><td>Non-Controlling Interest in Subsidiaries</td><td>542.1</td><td></td><td>597.0</td><td></td></tr><tr><td>Total Equity</td><td>3,390.1</td><td></td><td>3,406.6</td><td></td></tr><tr><td>Total Liabilities, Redeemable Non-Controlling Interest and Equity</td><td>$ 6,754.3</td><td></td><td>$ 6,656.4</td><td></td></tr></table>
table
6656.4
monetaryItemType
table: <entity> 6656.4 </entity> <entity type> monetaryItemType </entity type> <context> Total Assets | $ 6,754.3 | $ 6,656.4 </context>
us-gaap:LiabilitiesAndStockholdersEquity
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1242.7
monetaryItemType
table: <entity> 1242.7 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,242.7 | $ 1,238.3 | $ 1,259.3 </context>
us-gaap:RegulatedOperatingRevenue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1238.3
monetaryItemType
table: <entity> 1238.3 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,242.7 | $ 1,238.3 | $ 1,259.3 </context>
us-gaap:RegulatedOperatingRevenue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1259.3
monetaryItemType
table: <entity> 1259.3 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,242.7 | $ 1,238.3 | $ 1,259.3 </context>
us-gaap:RegulatedOperatingRevenue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
282.1
monetaryItemType
table: <entity> 282.1 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | 282.1 | 636.4 | 303.8 </context>
us-gaap:UnregulatedOperatingRevenue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
636.4
monetaryItemType
table: <entity> 636.4 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | 282.1 | 636.4 | 303.8 </context>
us-gaap:UnregulatedOperatingRevenue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
303.8
monetaryItemType
table: <entity> 303.8 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | 282.1 | 636.4 | 303.8 </context>
us-gaap:UnregulatedOperatingRevenue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
5.0
monetaryItemType
table: <entity> 5.0 </entity> <entity type> monetaryItemType </entity type> <context> Other – Non-utility | 5.0 | 5.1 | 7.6 </context>
us-gaap:RevenueNotFromContractWithCustomerOther
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
5.1
monetaryItemType
table: <entity> 5.1 </entity> <entity type> monetaryItemType </entity type> <context> Other – Non-utility | 5.0 | 5.1 | 7.6 </context>
us-gaap:RevenueNotFromContractWithCustomerOther
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
7.6
monetaryItemType
table: <entity> 7.6 </entity> <entity type> monetaryItemType </entity type> <context> Other – Non-utility | 5.0 | 5.1 | 7.6 </context>
us-gaap:RevenueNotFromContractWithCustomerOther
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1529.8
monetaryItemType
table: <entity> 1529.8 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Revenue | 1,529.8 | 1,879.8 | 1,570.7 </context>
us-gaap:Revenues
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1879.8
monetaryItemType
table: <entity> 1879.8 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Revenue | 1,529.8 | 1,879.8 | 1,570.7 </context>
us-gaap:Revenues
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1570.7
monetaryItemType
table: <entity> 1570.7 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Revenue | 1,529.8 | 1,879.8 | 1,570.7 </context>
us-gaap:Revenues
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
129.2
monetaryItemType
table: <entity> 129.2 </entity> <entity type> monetaryItemType </entity type> <context> Cost of Sales – Non-utility | 129.2 | 473.5 | 182.8 </context>
us-gaap:CostOfGoodsAndServicesSold
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
473.5
monetaryItemType
table: <entity> 473.5 </entity> <entity type> monetaryItemType </entity type> <context> Cost of Sales – Non-utility | 129.2 | 473.5 | 182.8 </context>
us-gaap:CostOfGoodsAndServicesSold
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
182.8
monetaryItemType
table: <entity> 182.8 </entity> <entity type> monetaryItemType </entity type> <context> Cost of Sales – Non-utility | 129.2 | 473.5 | 182.8 </context>
us-gaap:CostOfGoodsAndServicesSold
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
271.5
monetaryItemType
table: <entity> 271.5 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | 271.5 | 251.8 | 242.2 </context>
us-gaap:DepreciationDepletionAndAmortization
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
251.8
monetaryItemType
table: <entity> 251.8 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | 271.5 | 251.8 | 242.2 </context>
us-gaap:DepreciationDepletionAndAmortization
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
242.2
monetaryItemType
table: <entity> 242.2 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | 271.5 | 251.8 | 242.2 </context>
us-gaap:DepreciationDepletionAndAmortization
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
65.4
monetaryItemType
table: <entity> 65.4 </entity> <entity type> monetaryItemType </entity type> <context> Taxes Other than Income Taxes | 65.4 | 57.2 | 70.4 </context>
us-gaap:TaxesOther
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
57.2
monetaryItemType
table: <entity> 57.2 </entity> <entity type> monetaryItemType </entity type> <context> Taxes Other than Income Taxes | 65.4 | 57.2 | 70.4 </context>
us-gaap:TaxesOther
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
70.4
monetaryItemType
table: <entity> 70.4 </entity> <entity type> monetaryItemType </entity type> <context> Taxes Other than Income Taxes | 65.4 | 57.2 | 70.4 </context>
us-gaap:TaxesOther
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1369.7
monetaryItemType
table: <entity> 1369.7 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Expenses | 1,369.7 | 1,698.9 | 1,436.5 </context>
us-gaap:CostsAndExpenses
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1698.9
monetaryItemType
table: <entity> 1698.9 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Expenses | 1,369.7 | 1,698.9 | 1,436.5 </context>
us-gaap:CostsAndExpenses
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
1436.5
monetaryItemType
table: <entity> 1436.5 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Expenses | 1,369.7 | 1,698.9 | 1,436.5 </context>
us-gaap:CostsAndExpenses
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
160.1
monetaryItemType
table: <entity> 160.1 </entity> <entity type> monetaryItemType </entity type> <context> Operating Income | 160.1 | 180.9 | 134.2 </context>
us-gaap:OperatingIncomeLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
180.9
monetaryItemType
table: <entity> 180.9 </entity> <entity type> monetaryItemType </entity type> <context> Operating Income | 160.1 | 180.9 | 134.2 </context>
us-gaap:OperatingIncomeLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
134.2
monetaryItemType
table: <entity> 134.2 </entity> <entity type> monetaryItemType </entity type> <context> Operating Income | 160.1 | 180.9 | 134.2 </context>
us-gaap:OperatingIncomeLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
81.7
monetaryItemType
table: <entity> 81.7 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:InterestExpenseNonoperating
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
80.8
monetaryItemType
table: <entity> 80.8 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:InterestExpenseNonoperating
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
75.2
monetaryItemType
table: <entity> 75.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:InterestExpenseNonoperating
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
25.0
monetaryItemType
table: <entity> 25.0 </entity> <entity type> monetaryItemType </entity type> <context> Equity Earnings | 25.0 | 21.7 | 18.7 </context>
us-gaap:IncomeLossFromEquityMethodInvestments
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
21.7
monetaryItemType
table: <entity> 21.7 </entity> <entity type> monetaryItemType </entity type> <context> Equity Earnings | 25.0 | 21.7 | 18.7 </context>
us-gaap:IncomeLossFromEquityMethodInvestments
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
18.7
monetaryItemType
table: <entity> 18.7 </entity> <entity type> monetaryItemType </entity type> <context> Equity Earnings | 25.0 | 21.7 | 18.7 </context>
us-gaap:IncomeLossFromEquityMethodInvestments
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
23.0
monetaryItemType
table: <entity> 23.0 </entity> <entity type> monetaryItemType </entity type> <context> Other | 23.0 | 85.0 | 22.4 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
85.0
monetaryItemType
table: <entity> 85.0 </entity> <entity type> monetaryItemType </entity type> <context> Other | 23.0 | 85.0 | 22.4 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
22.4
monetaryItemType
table: <entity> 22.4 </entity> <entity type> monetaryItemType </entity type> <context> Other | 23.0 | 85.0 | 22.4 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
33.7
monetaryItemType
table: <entity> 33.7 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:NonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
25.9
monetaryItemType
table: <entity> 25.9 </entity> <entity type> monetaryItemType </entity type> <context> Total Other Income (Expense) | ( 33.7 ) | 25.9 | ( 34.1 ) </context>
us-gaap:NonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
34.1
monetaryItemType
table: <entity> 34.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:NonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
126.4
monetaryItemType
table: <entity> 126.4 </entity> <entity type> monetaryItemType </entity type> <context> Income Before Non-Controlling Interest and Income Taxes | 126.4 | 206.8 | 100.1 </context>
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
206.8
monetaryItemType
table: <entity> 206.8 </entity> <entity type> monetaryItemType </entity type> <context> Income Before Non-Controlling Interest and Income Taxes | 126.4 | 206.8 | 100.1 </context>
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
100.1
monetaryItemType
table: <entity> 100.1 </entity> <entity type> monetaryItemType </entity type> <context> Income Before Non-Controlling Interest and Income Taxes | 126.4 | 206.8 | 100.1 </context>
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
4.7
monetaryItemType
table: <entity> 4.7 </entity> <entity type> monetaryItemType </entity type> <context> Income Tax Expense (Benefit) | 4.7 | 27.9 | ( 31.2 ) </context>
us-gaap:IncomeTaxExpenseBenefit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
27.9
monetaryItemType
table: <entity> 27.9 </entity> <entity type> monetaryItemType </entity type> <context> Income Tax Expense (Benefit) | 4.7 | 27.9 | ( 31.2 ) </context>
us-gaap:IncomeTaxExpenseBenefit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
31.2
monetaryItemType
table: <entity> 31.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:IncomeTaxExpenseBenefit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
121.7
monetaryItemType
table: <entity> 121.7 </entity> <entity type> monetaryItemType </entity type> <context> Net Income | 121.7 | 178.9 | 131.3 </context>
us-gaap:ProfitLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
178.9
monetaryItemType
table: <entity> 178.9 </entity> <entity type> monetaryItemType </entity type> <context> Net Income | 121.7 | 178.9 | 131.3 </context>
us-gaap:ProfitLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
131.3
monetaryItemType
table: <entity> 131.3 </entity> <entity type> monetaryItemType </entity type> <context> Net Income | 121.7 | 178.9 | 131.3 </context>
us-gaap:ProfitLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
57.6
monetaryItemType
table: <entity> 57.6 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
68.2
monetaryItemType
table: <entity> 68.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
58.0
monetaryItemType
table: <entity> 58.0 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
179.3
monetaryItemType
table: <entity> 179.3 </entity> <entity type> monetaryItemType </entity type> <context> Net Income Attributable to ALLETE | $ 179.3 | $ 247.1 | $ 189.3 </context>
us-gaap:NetIncomeLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
247.1
monetaryItemType
table: <entity> 247.1 </entity> <entity type> monetaryItemType </entity type> <context> Net Income Attributable to ALLETE | $ 179.3 | $ 247.1 | $ 189.3 </context>
us-gaap:NetIncomeLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
189.3
monetaryItemType
table: <entity> 189.3 </entity> <entity type> monetaryItemType </entity type> <context> Net Income Attributable to ALLETE | $ 179.3 | $ 247.1 | $ 189.3 </context>
us-gaap:NetIncomeLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
57.7
sharesItemType
table: <entity> 57.7 </entity> <entity type> sharesItemType </entity type> <context> Basic | 57.7 | 57.3 | 55.9 </context>
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
57.3
sharesItemType
table: <entity> 57.3 </entity> <entity type> sharesItemType </entity type> <context> Basic | 57.7 | 57.3 | 55.9 </context>
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions Except Per Share Amounts</td><td></td><td></td><td></td></tr><tr><td>Operating Revenue</td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>$ 1,238.3</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>282.1</td><td></td><td>636.4</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>5.0</td><td></td><td>5.1</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,529.8</td><td></td><td>1,879.8</td><td></td><td>1,570.7</td><td></td></tr><tr><td>Operating Expenses</td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>477.6</td><td></td><td>482.9</td><td></td><td>545.5</td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>88.2</td><td></td><td>76.7</td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>129.2</td><td></td><td>473.5</td><td></td><td>182.8</td><td></td></tr><tr><td>Operating and Maintenance</td><td>361.4</td><td></td><td>345.3</td><td></td><td>318.9</td><td></td></tr><tr><td>Depreciation and Amortization</td><td>271.5</td><td></td><td>251.8</td><td></td><td>242.2</td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>65.4</td><td></td><td>57.2</td><td></td><td>70.4</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Total Operating Expenses</td><td>1,369.7</td><td></td><td>1,698.9</td><td></td><td>1,436.5</td><td></td></tr><tr><td>Operating Income</td><td>160.1</td><td></td><td>180.9</td><td></td><td>134.2</td><td></td></tr><tr><td>Other Income (Expense)</td><td></td><td></td><td></td></tr><tr><td>Interest Expense</td><td>( 81.7 )</td><td></td><td>( 80.8 )</td><td></td><td>( 75.2 )</td><td></td></tr><tr><td>Equity Earnings</td><td>25.0</td><td></td><td>21.7</td><td></td><td>18.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Other</td><td>23.0</td><td></td><td>85.0</td><td></td><td>22.4</td><td></td></tr><tr><td>Total Other Income (Expense)</td><td>( 33.7 )</td><td></td><td>25.9</td><td></td><td>( 34.1 )</td><td></td></tr><tr><td>Income Before Non-Controlling Interest and Income Taxes</td><td>126.4</td><td></td><td>206.8</td><td></td><td>100.1</td><td></td></tr><tr><td>Income Tax Expense (Benefit)</td><td>4.7</td><td></td><td>27.9</td><td></td><td>( 31.2 )</td><td></td></tr><tr><td>Net Income</td><td>121.7</td><td></td><td>178.9</td><td></td><td>131.3</td><td></td></tr><tr><td>Net Loss Attributable to Non-Controlling Interest</td><td>( 57.6 )</td><td></td><td>( 68.2 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 179.3</td><td></td><td>$ 247.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Average Shares of Common Stock</td><td></td><td></td><td></td></tr><tr><td>Basic</td><td>57.7</td><td></td><td>57.3</td><td></td><td>55.9</td><td></td></tr><tr><td>Diluted</td><td>57.8</td><td></td><td>57.4</td><td></td><td>56.0</td><td></td></tr><tr><td>Basic Earnings Per Share of Common Stock</td><td>$ 3.11</td><td></td><td>$ 4.31</td><td></td><td>$ 3.38</td><td></td></tr><tr><td>Diluted Earnings Per Share of Common Stock</td><td>$ 3.10</td><td></td><td>$ 4.30</td><td></td><td>$ 3.38</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr></table>
table
55.9
sharesItemType
table: <entity> 55.9 </entity> <entity type> sharesItemType </entity type> <context> Basic | 57.7 | 57.3 | 55.9 </context>
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic