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REGULATORY ENVIRONMENT - 2022 Rates (Details) - 2022 Rates - Public Service Commission of Wisconsin (PSCW) | Mar. 30, 2021 utility
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Public Utilities, General Disclosures [Line Items] |
Period to forego filing a rate case | 1 year
Number of Companies Entering into Agreement | 3
Percentage of first 15 basis points of additional earnings retained by the utility | 100.00%
Return on equity in excess of authorized amount (as a percent) | 0.15%

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