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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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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>Corpor... | 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 |
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