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- Definition

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- Definition

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- Definition

Solar and Wind Projects, Generating Production

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- Definition

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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage of public utility's requested equity to capital, including debt and equity.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested return on equity.

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- Definition

The amount of regulated other operating revenues recognized during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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REGULATORY MATTERS - Electric Rates (Details) $ in Thousands					3 Months Ended	6 Months Ended
	Apr. 01, 2025 USD ($)	May 03, 2024 USD ($)	Dec. 19, 2023 USD ($)	Nov. 01, 2023 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Aug. 04, 2025 MW	Mar. 03, 2025 MW	Feb. 01, 2021 MW
Regulatory Matters [Line Items]
Regulatory assets					$ 371,700	$ 363,000
Total Non-Current Regulatory Liabilities					570,500	586,700
MPUC \| Minnesota Power \| New Wind Energy Resources \| Subsequent Event
Regulatory Matters [Line Items]
Wind project, generating production (MW) \| MW								200
ECO Annual Filing \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Revenue from cost recovery riders and other regulatory programs	$ 2,600				$ 2,200
2025 Integrated Resource Plan \| Minnesota Power \| New Wind Energy Resources
Regulatory Matters [Line Items]
Wind project, generating production (MW) \| MW									400
2025 Integrated Resource Plan \| Minnesota Power \| Expanding Energy Storage Resources
Regulatory Matters [Line Items]
Energy storage project, generating production (MW) \| MW									100
2025 Integrated Resource Plan \| Minnesota Power \| Natural Gas Capacity
Regulatory Matters [Line Items]
Natural gas project, generating production (MW) \| MW									1,000
2021 Integrated Resource Plan \| Minnesota Power
Regulatory Matters [Line Items]
Solar and wind projects, generating production (MW) \| MW									700
2021 Integrated Resource Plan \| MPUC \| Renewable Generation \| Maximum
Regulatory Matters [Line Items]
Generating capacity (MW) \| MW										700
Electric Rates \| Fuel Adjustment Clause 2024 \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Regulatory assets						4,500
Electric Rates \| Fuel Adjustment Clause 2025 \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Total Non-Current Regulatory Liabilities						5,700
Retail Customers \| Electric Rates \| Current Cost Recovery Rider \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Revenue from cost recovery riders and other regulatory programs						$ 22,900	$ 13,300
Retail Customers \| Electric Rates \| 2024 Minnesota General Rate Case \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Requested rate increase percent				12.00%
Requested return on equity		9.78%		10.30%
Requested equity capital structure				53.00%
Annual additional revenue generated from requested final rate increase		$ 33,970		$ 89,000
Approved rate increase			$ 64,000