Anticipated Additional Generating Capacity (MW)

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- Definition

Anticipated Generating Output to be Purchased (MW)

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No definition available.

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- Definition

Minnesota Next Generation Act of 2007 introduced a spend goal of 1.5% of net gross operating revenues from service provided in the state on energy CIPs each year.

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- Definition

Energy Conservation and Optimization Plan Goal, Next Fiscal Year

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- Definition

Energy Conservation and Optimization Plan Goal, Second Fiscal Year

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- Definition

Energy Conservation and Optimization Plan Goal, Third Fiscal Year

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- Definition

Estimated Investment Amount

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No definition available.

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- Definition

FERC Authorized Return on Common Equity

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- Definition

FERC Authorized Return on Equity, Including Incentive Adder

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- Definition

The length of notice required to terminate a contract (in years).

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No definition available.

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- Definition

Number of Customers

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No definition available.

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- Definition

Public Utility - Additional Rider Revenue

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No definition available.

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- Definition

Minnesota's solar energy mandate for total retail electric sales, excluding sales to certain industrial customers, by the end of 2020.

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No definition available.

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- Definition

Minnesota's solar energy mandate for small scale solar with photovoltaic devices with a nameplate capacity of 20 kilowatts or less by the end of 2020. Expressed as a percentage of the overall mandate.

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No definition available.

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- Definition

Current regulatory liabilities generally represent obligations to make refunds to customers for various reasons including overpayment.

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No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

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No definition available.

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- Definition

Percentage of public utility's approved return on equity.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

Percentage of public utility's requested return on equity.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
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- Definition

The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Regulatory Matters - Narrative (Details) $ in Millions							12 Months Ended			36 Months Ended
Regulatory Matters - Narrative (Details) $ in Millions	Dec. 19, 2023 USD ($)	Nov. 01, 2023 USD ($)	Feb. 28, 2023 USD ($)	Feb. 27, 2023	Dec. 20, 2022 USD ($)	Nov. 01, 2021 USD ($)	Dec. 31, 2023 USD ($) contract customer MW	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 15, 2023 MW	Oct. 02, 2023 MW	Sep. 30, 2023 USD ($)	Feb. 01, 2021 MW
Regulatory Matters [Line Items]
Regulatory Assets							$ 425.4	$ 441.0		$ 441.0
Regulatory Liabilities							$ 574.0	526.1		526.1
Minnesota Power \| Solar Generation
Regulatory Matters [Line Items]
Anticipated generating capacity to be purchased (MW) \| MW							20					300
Minnesota Power \| Wind Generation
Regulatory Matters [Line Items]
Anticipated generating capacity to be purchased (MW) \| MW											400
Other \| Solar Generation
Regulatory Matters [Line Items]
Estimated investment amount							$ 40.0
MPUC
Regulatory Matters [Line Items]
Minnesota solar energy standard - overall mandate percentage							1.50%
MPUC \| Minimum
Regulatory Matters [Line Items]
Cip spending minimum - percentage							1.50%
Minnesota solar energy standard - overall mandate percentage							1.50%
Minnesota solar energy standard - small scale solar mandate percentage							10.00%
MPUC \| Minnesota Power \| Solar Generation
Regulatory Matters [Line Items]
Generating capacity (MW) \| MW							40
FERC
Regulatory Matters [Line Items]
FERC authorized return on common equity							10.02%
FERC authorized return on equity including incentive adder							10.52%
ECO Triennial Filing \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Conservation improvement program goal, next fiscal year							$ 12.5
Energy conservation and optimization plan goal, second fiscal year							12.7
Energy conservation and optimization plan goal, third fiscal year							12.8
2021 Integrated Resource Plan \| MPUC \| Maximum \| Renewable Generation
Regulatory Matters [Line Items]
Generating capacity (MW) \| MW														700
CIP Consolidated Filing Member \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Revenue from cost recovery riders							2.2
CIP Consolidated Filing \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Revenue from cost recovery riders								1.9	$ 2.4
Electric Rates \| Fuel Adjustment Clause 2022 \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Regulatory Assets								$ 13.0		$ 13.0
Electric Rates \| Fuel Adjustment Clause 2023 \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Regulatory Liabilities							15.5
Electric Rates \| Fuel Adjustment Clause \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Regulatory Assets									56.0
Retail Customers \| 2018 Wisconsin General Rate Case \| PSCW \| SWL&P
Regulatory Matters [Line Items]
Authorized return on equity										10.40%
Return on common equity										55.00%
Retail Customers \| 2022 Wisconsin General Rate Review \| PSCW \| SWL&P
Regulatory Matters [Line Items]
Requested average rate increase								3.60%
Requested return on equity								10.40%
Requested equity ratio								55.00%
Annual additional revenue generated from requested final rate increase								$ 4.3
Additional revenue from base rates					$ 3.3
Retail Customers \| 2022 Wisconsin General Rate Case \| PSCW \| SWL&P
Regulatory Matters [Line Items]
Authorized return on equity					10.00%
Return on common equity					55.00%
Retail Customers \| Electric Rates \| Current Cost Recovery Rider \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Revenue from cost recovery riders							$ 57.0	38.8	$ 38.9
Retail Customers \| Electric Rates \| 2016 Minnesota General Rate Review \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Authorized return on equity				9.25%
Return on common equity				53.81%
Retail Customers \| Electric Rates \| 2022 Minnesota General Rate Review \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Authorized return on equity			9.65%
Return on common equity			52.50%
Requested average rate increase						18.00%
Requested return on equity						10.25%
Requested equity ratio						53.81%
Annual additional revenue generated from requested final rate increase						$ 108.0
Additional revenue from base rates			$ 60.0
Public utility - additional rider revenue			$ 10.0
Customer refund								$ 18.0		$ 18.0			$ 39.0
Retail Customers \| Electric Rates \| 2024 Minnesota General Rate Case \| MPUC \| Minnesota Power
Regulatory Matters [Line Items]
Requested average rate increase		12.00%
Requested return on equity		10.30%
Requested equity ratio		53.00%
Annual additional revenue generated from requested final rate increase	$ 64.0	$ 89.0
Municipal Customers \| Electric Rates \| FERC-Approved Wholesale Rates \| FERC \| Minnesota Power
Regulatory Matters [Line Items]
Number of customers \| customer							14
Notice required to terminate							3 years
Municipal Customers \| Electric Rates \| FERC-Approved Wholesale Rates \| FERC \| Minnesota Power \| Wholesale Electric Contract (Cost-Based Formula Methodology for Entire Term)
Regulatory Matters [Line Items]
Number of customers \| contract							2
Municipal Customers \| Electric Rates \| FERC-Approved Wholesale Rates \| FERC \| Minnesota Power \| Wholesale Electric Contracts (Through 2029)
Regulatory Matters [Line Items]
Number of customers \| customer							13