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<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
179.3
monetaryItemType
table: <entity> 179.3 </entity> <entity type> monetaryItemType </entity type> <context> Net Income (Loss) Attributable to ALLETE | $ 160.9 | $ 17.8 | $ 178.7 | $ 0.6 | $ 179.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
17.7
monetaryItemType
table: <entity> 17.7 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | $ 196.3 | $ 57.5 | $ 253.8 | $ 17.7 | $ 271.5 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
271.5
monetaryItemType
table: <entity> 271.5 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | $ 196.3 | $ 57.5 | $ 253.8 | $ 17.7 | $ 271.5 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
66.1
monetaryItemType
table: <entity> 66.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
0.3
monetaryItemType
table: <entity> 0.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
66.4
monetaryItemType
table: <entity> 66.4 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
15.3
monetaryItemType
table: <entity> 15.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
26.5
monetaryItemType
table: <entity> 26.5 </entity> <entity type> monetaryItemType </entity type> <context> Equity Earnings | $ 26.5 | — | $ 26.5 | $( 1.5 ) | $ 25.0 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,242.7 | — | $ 1,242.7 | — | $ 1,242.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
1.5
monetaryItemType
table: <entity> 1.5 </entity> <entity type> monetaryItemType </entity type> <context> None </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
25.0
monetaryItemType
table: <entity> 25.0 </entity> <entity type> monetaryItemType </entity type> <context> Equity Earnings | $ 26.5 | — | $ 26.5 | $( 1.5 ) | $ 25.0 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
17.6
monetaryItemType
table: <entity> 17.6 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
15.6
monetaryItemType
table: <entity> 15.6 </entity> <entity type> monetaryItemType </entity type> <context> Income Tax Benefit (Expense) | $( 17.6 ) | $ 15.6 | $( 2.0 ) | $( 2.7 ) | $( 4.7 ) </context>
us-gaap:IncomeTaxExpenseBenefit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
2.0
monetaryItemType
table: <entity> 2.0 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
2.7
monetaryItemType
table: <entity> 2.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
4.7
monetaryItemType
table: <entity> 4.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
4489.4
monetaryItemType
table: <entity> 4489.4 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,489.4 | $ 1,477.4 | $ 5,966.8 | $ 787.5 | $ 6,754.3 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
1477.4
monetaryItemType
table: <entity> 1477.4 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,489.4 | $ 1,477.4 | $ 5,966.8 | $ 787.5 | $ 6,754.3 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
5966.8
monetaryItemType
table: <entity> 5966.8 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,489.4 | $ 1,477.4 | $ 5,966.8 | $ 787.5 | $ 6,754.3 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
787.5
monetaryItemType
table: <entity> 787.5 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,489.4 | $ 1,477.4 | $ 5,966.8 | $ 787.5 | $ 6,754.3 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
6754.3
monetaryItemType
table: <entity> 6754.3 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,489.4 | $ 1,477.4 | $ 5,966.8 | $ 787.5 | $ 6,754.3 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
194.4
monetaryItemType
table: <entity> 194.4 </entity> <entity type> monetaryItemType </entity type> <context> Equity Investment | $ 194.4 | — | $ 194.4 | $ 145.7 | $ 340.1 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,242.7 | — | $ 1,242.7 | — | $ 1,242.7 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
145.7
monetaryItemType
table: <entity> 145.7 </entity> <entity type> monetaryItemType </entity type> <context> Equity Investment | $ 194.4 | — | $ 194.4 | $ 145.7 | $ 340.1 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
340.1
monetaryItemType
table: <entity> 340.1 </entity> <entity type> monetaryItemType </entity type> <context> Equity Investment | $ 194.4 | — | $ 194.4 | $ 145.7 | $ 340.1 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
287.2
monetaryItemType
table: <entity> 287.2 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 287.2 | $ 7.7 | $ 294.9 | $ 53.1 | $ 348.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
7.7
monetaryItemType
table: <entity> 7.7 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 287.2 | $ 7.7 | $ 294.9 | $ 53.1 | $ 348.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
294.9
monetaryItemType
table: <entity> 294.9 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 287.2 | $ 7.7 | $ 294.9 | $ 53.1 | $ 348.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
53.1
monetaryItemType
table: <entity> 53.1 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 287.2 | $ 7.7 | $ 294.9 | $ 53.1 | $ 348.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2024</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td><td>—</td><td></td><td>$ 1,242.7</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 79.3</td><td></td><td>79.3</td><td></td><td>$ 202.8</td><td></td><td>282.1</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.0</td><td></td><td>5.0</td><td></td><td>—</td><td></td><td>5.0</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,242.7</td><td></td><td>84.3</td><td></td><td>1,327.0</td><td></td><td>202.8</td><td></td><td>1,529.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>479.7</td><td></td><td>—</td><td></td><td>479.7</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>64.6</td><td></td><td>—</td><td></td><td>64.6</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>18.3</td><td></td><td>18.3</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>250.0</td><td></td><td>46.5</td><td></td><td>296.5</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>196.3</td><td></td><td>57.5</td><td></td><td>253.8</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>52.5</td><td></td><td>10.4</td><td></td><td>62.9</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 38.7 )</td><td></td><td>66.2</td><td></td><td>27.5</td><td></td><td></td><td></td></tr><tr><td>Net Income (Loss) Attributable to ALLETE</td><td>$ 160.9</td><td></td><td>$ 17.8</td><td></td><td>$ 178.7</td><td>$ 0.6</td><td>$ 179.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 196.3</td><td></td><td>$ 57.5</td><td></td><td>$ 253.8</td><td></td><td>$ 17.7</td><td></td><td>$ 271.5</td><td></td></tr><tr><td>Interest Expense</td><td>$( 66.1 )</td><td>$( 0.3 )</td><td>$( 66.4 )</td><td>$( 15.3 )</td><td>$( 81.7 )</td></tr><tr><td>Equity Earnings</td><td>$ 26.5</td><td></td><td>—</td><td></td><td>$ 26.5</td><td></td><td>$( 1.5 )</td><td>$ 25.0</td><td></td></tr><tr><td>Income Tax Benefit (Expense)</td><td>$( 17.6 )</td><td>$ 15.6</td><td>$( 2.0 )</td><td>$( 2.7 )</td><td>$( 4.7 )</td></tr><tr><td>Assets</td><td>$ 4,489.4</td><td></td><td>$ 1,477.4</td><td></td><td>$ 5,966.8</td><td></td><td>$ 787.5</td><td></td><td>$ 6,754.3</td><td></td></tr><tr><td>Equity Investment</td><td>$ 194.4</td><td></td><td>—</td><td></td><td>$ 194.4</td><td></td><td>$ 145.7</td><td></td><td>$ 340.1</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 287.2</td><td></td><td>$ 7.7</td><td></td><td>$ 294.9</td><td></td><td>$ 53.1</td><td></td><td>$ 348.0</td><td></td></tr></table>
table
348.0
monetaryItemType
table: <entity> 348.0 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 287.2 | $ 7.7 | $ 294.9 | $ 53.1 | $ 348.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
1238.3
monetaryItemType
table: <entity> 1238.3 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
413.4
monetaryItemType
table: <entity> 413.4 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | — | $ 413.4 | 413.4 | $ 223.0 | 636.4 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
223.0
monetaryItemType
table: <entity> 223.0 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | — | $ 413.4 | 413.4 | $ 223.0 | 636.4 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</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 | — | $ 413.4 | 413.4 | $ 223.0 | 636.4 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
5.1
monetaryItemType
table: <entity> 5.1 </entity> <entity type> monetaryItemType </entity type> <context> Other – Non-utility | — | 5.1 | 5.1 | — | 5.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
1238.3
monetaryItemType
table: <entity> 1238.3 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
418.5
monetaryItemType
table: <entity> 418.5 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Revenue | 1,238.3 | 418.5 | 1,656.8 | 223.0 | 1,879.8 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
1656.8
monetaryItemType
table: <entity> 1656.8 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Revenue | 1,238.3 | 418.5 | 1,656.8 | 223.0 | 1,879.8 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
223.0
monetaryItemType
table: <entity> 223.0 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | — | $ 413.4 | 413.4 | $ 223.0 | 636.4 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
1879.8
monetaryItemType
table: <entity> 1879.8 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Revenue | 1,238.3 | 418.5 | 1,656.8 | 223.0 | 1,879.8 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
342.2
monetaryItemType
table: <entity> 342.2 </entity> <entity type> monetaryItemType </entity type> <context> Cost of Sales – Non-utility | — | 342.2 | 342.2 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
179.2
monetaryItemType
table: <entity> 179.2 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | 179.2 | 57.5 | 236.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
57.5
monetaryItemType
table: <entity> 57.5 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | 179.2 | 57.5 | 236.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
236.7
monetaryItemType
table: <entity> 236.7 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | 179.2 | 57.5 | 236.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
44.5
monetaryItemType
table: <entity> 44.5 </entity> <entity type> monetaryItemType </entity type> <context> Taxes Other than Income Taxes | 44.5 | 10.0 | 54.5 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
10.0
monetaryItemType
table: <entity> 10.0 </entity> <entity type> monetaryItemType </entity type> <context> Taxes Other than Income Taxes | 44.5 | 10.0 | 54.5 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
54.5
monetaryItemType
table: <entity> 54.5 </entity> <entity type> monetaryItemType </entity type> <context> Taxes Other than Income Taxes | 44.5 | 10.0 | 54.5 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
47.8
monetaryItemType
table: <entity> 47.8 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:SegmentReportingOtherItemAmount
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
115.0
monetaryItemType
table: <entity> 115.0 </entity> <entity type> monetaryItemType </entity type> <context> Other Segment Items (a) Other Segment Items (a) | ( 47.8 ) | 115.0 | 67.2 </context>
us-gaap:SegmentReportingOtherItemAmount
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
67.2
monetaryItemType
table: <entity> 67.2 </entity> <entity type> monetaryItemType </entity type> <context> Other Segment Items (a) Other Segment Items (a) | ( 47.8 ) | 115.0 | 67.2 </context>
us-gaap:SegmentReportingOtherItemAmount
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
147.2
monetaryItemType
table: <entity> 147.2 </entity> <entity type> monetaryItemType </entity type> <context> Net Income Attributable to ALLETE | $ 147.2 | $ 71.7 | $ 218.9 | $ 28.2 | $ 247.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
71.7
monetaryItemType
table: <entity> 71.7 </entity> <entity type> monetaryItemType </entity type> <context> Net Income Attributable to ALLETE | $ 147.2 | $ 71.7 | $ 218.9 | $ 28.2 | $ 247.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
218.9
monetaryItemType
table: <entity> 218.9 </entity> <entity type> monetaryItemType </entity type> <context> Net Income Attributable to ALLETE | $ 147.2 | $ 71.7 | $ 218.9 | $ 28.2 | $ 247.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
28.2
monetaryItemType
table: <entity> 28.2 </entity> <entity type> monetaryItemType </entity type> <context> Net Income Attributable to ALLETE | $ 147.2 | $ 71.7 | $ 218.9 | $ 28.2 | $ 247.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
247.1
monetaryItemType
table: <entity> 247.1 </entity> <entity type> monetaryItemType </entity type> <context> Operating and Maintenance | 247.1 | 52.1 | 299.2 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
15.1
monetaryItemType
table: <entity> 15.1 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | $ 179.2 | $ 57.5 | $ 236.7 | $ 15.1 | $ 251.8 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
251.8
monetaryItemType
table: <entity> 251.8 </entity> <entity type> monetaryItemType </entity type> <context> Depreciation and Amortization | $ 179.2 | $ 57.5 | $ 236.7 | $ 15.1 | $ 251.8 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
63.9
monetaryItemType
table: <entity> 63.9 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
0.8
monetaryItemType
table: <entity> 0.8 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
64.7
monetaryItemType
table: <entity> 64.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
16.1
monetaryItemType
table: <entity> 16.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
23.1
monetaryItemType
table: <entity> 23.1 </entity> <entity type> monetaryItemType </entity type> <context> Equity Earnings | $ 23.1 | — | $ 23.1 | $( 1.4 ) | $ 21.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
1.4
monetaryItemType
table: <entity> 1.4 </entity> <entity type> monetaryItemType </entity type> <context> None </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
21.7
monetaryItemType
table: <entity> 21.7 </entity> <entity type> monetaryItemType </entity type> <context> Equity Earnings | $ 23.1 | — | $ 23.1 | $( 1.4 ) | $ 21.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
22.4
monetaryItemType
table: <entity> 22.4 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
2.7
monetaryItemType
table: <entity> 2.7 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
25.1
monetaryItemType
table: <entity> 25.1 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
2.8
monetaryItemType
table: <entity> 2.8 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
27.9
monetaryItemType
table: <entity> 27.9 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
4335.0
monetaryItemType
table: <entity> 4335.0 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,335.0 | $ 1,594.1 | $ 5,929.1 | $ 727.3 | $ 6,656.4 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
1594.1
monetaryItemType
table: <entity> 1594.1 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,335.0 | $ 1,594.1 | $ 5,929.1 | $ 727.3 | $ 6,656.4 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
5929.1
monetaryItemType
table: <entity> 5929.1 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,335.0 | $ 1,594.1 | $ 5,929.1 | $ 727.3 | $ 6,656.4 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
727.3
monetaryItemType
table: <entity> 727.3 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,335.0 | $ 1,594.1 | $ 5,929.1 | $ 727.3 | $ 6,656.4 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
6656.4
monetaryItemType
table: <entity> 6656.4 </entity> <entity type> monetaryItemType </entity type> <context> Assets | $ 4,335.0 | $ 1,594.1 | $ 5,929.1 | $ 727.3 | $ 6,656.4 </context>
us-gaap:Assets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
179.7
monetaryItemType
table: <entity> 179.7 </entity> <entity type> monetaryItemType </entity type> <context> Equity Investment | $ 179.7 | — | $ 179.7 | $ 151.5 | $ 331.2 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,238.3 | — | $ 1,238.3 | — | $ 1,238.3 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
151.5
monetaryItemType
table: <entity> 151.5 </entity> <entity type> monetaryItemType </entity type> <context> Equity Investment | $ 179.7 | — | $ 179.7 | $ 151.5 | $ 331.2 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
331.2
monetaryItemType
table: <entity> 331.2 </entity> <entity type> monetaryItemType </entity type> <context> Equity Investment | $ 179.7 | — | $ 179.7 | $ 151.5 | $ 331.2 </context>
us-gaap:EquityMethodInvestments
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
236.3
monetaryItemType
table: <entity> 236.3 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 236.3 | $( 5.3 ) | $ 231.0 | $ 25.0 | $ 256.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
5.3
monetaryItemType
table: <entity> 5.3 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
231.0
monetaryItemType
table: <entity> 231.0 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 236.3 | $( 5.3 ) | $ 231.0 | $ 25.0 | $ 256.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
25.0
monetaryItemType
table: <entity> 25.0 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 236.3 | $( 5.3 ) | $ 231.0 | $ 25.0 | $ 256.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2023</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td><td>—</td><td></td><td>$ 1,238.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 413.4</td><td></td><td>413.4</td><td></td><td>$ 223.0</td><td></td><td>636.4</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>5.1</td><td></td><td>5.1</td><td></td><td>—</td><td></td><td>5.1</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,238.3</td><td></td><td>418.5</td><td></td><td>1,656.8</td><td></td><td>223.0</td><td></td><td>1,879.8</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>484.3</td><td></td><td>—</td><td></td><td>484.3</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>88.2</td><td></td><td>—</td><td></td><td>88.2</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>342.2</td><td></td><td>342.2</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>247.1</td><td></td><td>52.1</td><td></td><td>299.2</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>179.2</td><td></td><td>57.5</td><td></td><td>236.7</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>44.5</td><td></td><td>10.0</td><td></td><td>54.5</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 47.8 )</td><td></td><td>115.0</td><td></td><td>67.2</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 147.2</td><td></td><td>$ 71.7</td><td></td><td>$ 218.9</td><td>$ 28.2</td><td></td><td>$ 247.1</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 179.2</td><td></td><td>$ 57.5</td><td></td><td>$ 236.7</td><td></td><td>$ 15.1</td><td></td><td>$ 251.8</td><td></td></tr><tr><td>Interest Expense</td><td>$( 63.9 )</td><td>$( 0.8 )</td><td>$( 64.7 )</td><td>$( 16.1 )</td><td>$( 80.8 )</td></tr><tr><td>Equity Earnings</td><td>$ 23.1</td><td></td><td>—</td><td></td><td>$ 23.1</td><td></td><td>$( 1.4 )</td><td>$ 21.7</td><td></td></tr><tr><td>Income Tax Expense</td><td>$( 22.4 )</td><td>$( 2.7 )</td><td>$( 25.1 )</td><td>$( 2.8 )</td><td>$( 27.9 )</td></tr><tr><td>Assets</td><td>$ 4,335.0</td><td></td><td>$ 1,594.1</td><td></td><td>$ 5,929.1</td><td></td><td>$ 727.3</td><td></td><td>$ 6,656.4</td><td></td></tr><tr><td>Equity Investment</td><td>$ 179.7</td><td></td><td>—</td><td></td><td>$ 179.7</td><td></td><td>$ 151.5</td><td></td><td>$ 331.2</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 236.3</td><td></td><td>$( 5.3 )</td><td>$ 231.0</td><td></td><td>$ 25.0</td><td></td><td>$ 256.0</td><td></td></tr></table>
table
256.0
monetaryItemType
table: <entity> 256.0 </entity> <entity type> monetaryItemType </entity type> <context> Capital Expenditures | $ 236.3 | $( 5.3 ) | $ 231.0 | $ 25.0 | $ 256.0 </context>
us-gaap:SegmentExpenditureAdditionToLongLivedAssets
<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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
1259.3
monetaryItemType
table: <entity> 1259.3 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,259.3 | — | $ 1,259.3 | — | $ 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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,259.3 | — | $ 1,259.3 | — | $ 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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,259.3 | — | $ 1,259.3 | — | $ 1,259.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
110.7
monetaryItemType
table: <entity> 110.7 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | — | $ 110.7 | 110.7 | $ 193.1 | 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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
193.1
monetaryItemType
table: <entity> 193.1 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Non-utility | — | $ 110.7 | 110.7 | $ 193.1 | 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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</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 | — | $ 110.7 | 110.7 | $ 193.1 | 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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,259.3 | — | $ 1,259.3 | — | $ 1,259.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
7.6
monetaryItemType
table: <entity> 7.6 </entity> <entity type> monetaryItemType </entity type> <context> Other – Non-utility | — | 7.6 | 7.6 | — | 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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
1259.3
monetaryItemType
table: <entity> 1259.3 </entity> <entity type> monetaryItemType </entity type> <context> Contracts with Customers – Utility | $ 1,259.3 | — | $ 1,259.3 | — | $ 1,259.3 </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><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31, 2022</td><td>Regulated Operations</td><td>ALLETE Clean Energy</td><td>Total Reportable Segments</td><td>Corporate and Other / Eliminations</td><td>Consolidated</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Contracts with Customers – Utility</td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td><td>—</td><td></td><td>$ 1,259.3</td><td></td></tr><tr><td>Contracts with Customers – Non-utility</td><td>—</td><td></td><td>$ 110.7</td><td></td><td>110.7</td><td></td><td>$ 193.1</td><td></td><td>303.8</td><td></td></tr><tr><td>Other – Non-utility</td><td>—</td><td></td><td>7.6</td><td></td><td>7.6</td><td></td><td>—</td><td></td><td>7.6</td><td></td></tr><tr><td>Total Operating Revenue</td><td>1,259.3</td><td></td><td>118.3</td><td></td><td>1,377.6</td><td></td><td>193.1</td><td></td><td>1,570.7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Significant Segment Expenses:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Fuel, Purchased Power and Gas – Utility</td><td>545.5</td><td></td><td>—</td><td></td><td>545.5</td><td></td><td></td><td></td></tr><tr><td>Transmission Services – Utility</td><td>76.7</td><td></td><td>—</td><td></td><td>76.7</td><td></td><td></td><td></td></tr><tr><td>Cost of Sales – Non-utility</td><td>—</td><td></td><td>56.7</td><td></td><td>56.7</td><td></td><td></td><td></td></tr><tr><td>Operating and Maintenance</td><td>239.3</td><td></td><td>47.3</td><td></td><td>286.6</td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>171.9</td><td></td><td>58.6</td><td></td><td>230.5</td><td></td><td></td><td></td></tr><tr><td>Taxes Other than Income Taxes</td><td>57.4</td><td></td><td>10.7</td><td></td><td>68.1</td><td></td><td></td><td></td></tr><tr><td>Other Segment Items (a) Other Segment Items (a)</td><td>( 18.6 )</td><td></td><td>71.3</td><td></td><td>52.7</td><td></td><td></td><td></td></tr><tr><td>Net Income Attributable to ALLETE</td><td>$ 149.9</td><td></td><td>$ 16.3</td><td></td><td>$ 166.2</td><td>$ 23.1</td><td></td><td>$ 189.3</td><td></td></tr><tr><td>Other Segment Information:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and Amortization</td><td>$ 171.9</td><td></td><td>$ 58.6</td><td></td><td>$ 230.5</td><td></td><td>$ 11.7</td><td></td><td>$ 242.2</td><td></td></tr><tr><td>Interest Expense</td><td>$( 58.1 )</td><td>$( 2.3 )</td><td>$( 60.4 )</td><td>$( 14.8 )</td><td>$( 75.2 )</td></tr><tr><td>Equity Earnings</td><td>$ 19.3</td><td></td><td>—</td><td></td><td>$ 19.3</td><td></td><td>$( 0.6 )</td><td>$ 18.7</td><td></td></tr><tr><td>Income Tax Benefit</td><td>$ 10.4</td><td></td><td>$ 15.4</td><td></td><td>$ 25.8</td><td></td><td>$ 5.4</td><td></td><td>$ 31.2</td><td></td></tr><tr><td>Assets</td><td>$ 4,291.4</td><td></td><td>$ 1,873.3</td><td></td><td>$ 6,164.7</td><td></td><td>$ 680.9</td><td></td><td>$ 6,845.6</td><td></td></tr><tr><td>Equity Investment</td><td>$ 165.4</td><td></td><td>—</td><td></td><td>$ 165.4</td><td></td><td>$ 157.3</td><td></td><td>$ 322.7</td><td></td></tr><tr><td>Capital Expenditures</td><td>$ 158.3</td><td></td><td>$ 2.2</td><td>$ 160.5</td><td></td><td>$ 47.6</td><td></td><td>$ 208.1</td><td></td></tr></table>
table
118.3
monetaryItemType
table: <entity> 118.3 </entity> <entity type> monetaryItemType </entity type> <context> Total Operating Revenue | 1,259.3 | 118.3 | 1,377.6 | 193.1 | 1,570.7 </context>
us-gaap:Revenues