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REGULATORY ENVIRONMENT - WI 2020 AND 2021 RATES (Details) - Public Service Commission of Wisconsin (PSCW) $ in Millions | 1 Months Ended
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Dec. 31, 2019 USD ($) utility
2020 and 2021 rates |
Public Utilities, General Disclosures [Line Items] |
Number of utilities filing rate requests | utility | 3
Number of utilities with earnings sharing mechanism | utility | 3
Percentage of first 25 basis points of additional earnings retained by the utility | 100.00%
Return on equity in excess of authorized amount (as a percent) | 0.25%
Percentage of additional earnings between 25 and 75 basis points refunded to customers | 50.00%
Return on equity in excess of first 25 basis points above authorized amount (as a percent) | 0.50%
Percentage of earnings in excess of 75 basis points refunded to customers | 100.00%
2020 and 2021 rates | Electric rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization period | 2 years
2020 and 2021 rates | Natural gas rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Number of utilities filing rate requests | utility | 3
Amortization period | 4 years
WE | 2020 and 2021 rates |
Public Utilities, General Disclosures [Line Items] |
Approved return on equity (as a percent) | 10.00%
Approved common equity component average (as a percent) | 52.50%
WE | 2020 and 2021 rates | Electric rates |
Public Utilities, General Disclosures [Line Items] |
Pleasant Prairie power plant's book value to be securitized | $ 100.0
WE | 2020 rates | Electric rates |
Public Utilities, General Disclosures [Line Items] |
Approved rate increase | $ 15.3
Approved rate increase (as a percent) | 0.50%
WE | 2020 rates | Electric rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ 65.0
WE | 2020 rates | Natural gas rates |
Public Utilities, General Disclosures [Line Items] |
Approved rate increase | $ 10.4
Approved rate increase (as a percent) | 2.80%
WE | 2020 rates | Natural gas rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ (5.0)
WE | 2020 rates | Steam rates |
Public Utilities, General Disclosures [Line Items] |
Approved rate increase | $ 1.9
Approved rate increase (as a percent) | 8.60%
WE | 2021 rates | Electric rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ 65.0
WE | 2021 rates | Natural gas rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ (5.0)
WPS | 2020 and 2021 rates |
Public Utilities, General Disclosures [Line Items] |
Approved return on equity (as a percent) | 10.00%
Approved common equity component average (as a percent) | 52.50%
WPS | 2020 and 2021 rates | Electric rates |
Public Utilities, General Disclosures [Line Items] |
Authorized revenue requirement for ReACT | $ 275.0
Cost of the ReACT project | $ 342.0
WPS | 2020 and 2021 rates | Electric rates | ReACT |
Public Utilities, General Disclosures [Line Items] |
Collection of ReACT regulatory asset in years | 8 years
WPS | 2020 and 2021 rates | Electric rates | Earnings sharing mechanisms |
Public Utilities, General Disclosures [Line Items] |
Amortization period | 2 years
Amortization of regulatory liabilities | $ 21.0
WPS | 2020 rates | Electric rates |
Public Utilities, General Disclosures [Line Items] |
Approved rate increase | $ 15.8
Approved rate increase (as a percent) | 1.60%
WPS | 2020 rates | Electric rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ 11.0
WPS | 2020 rates | Natural gas rates |
Public Utilities, General Disclosures [Line Items] |
Approved rate increase | $ 4.3
Approved rate increase (as a percent) | 1.40%
WPS | 2020 rates | Natural gas rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ 5.0
WPS | 2021 rates | Electric rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | 39.0
WPS | 2021 rates | Natural gas rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ 5.0
WG | 2020 and 2021 rates |
Public Utilities, General Disclosures [Line Items] |
Approved return on equity (as a percent) | 10.20%
Approved common equity component average (as a percent) | 52.50%
WG | 2020 rates | Natural gas rates |
Public Utilities, General Disclosures [Line Items] |
Approved rate increase | $ (1.5)
Approved rate increase (as a percent) | (0.20%)
WG | 2020 rates | Natural gas rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ 3.0
WG | 2021 rates | Natural gas rates | Tax Cuts and Jobs Act of 2017 |
Public Utilities, General Disclosures [Line Items] |
Amortization of regulatory liabilities | $ 3.0

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