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RATE MATTERS - PSO and SWEPCo Rate Matters (Details) - North Central Wind Energy Facilities | 1 Months Ended | 9 Months Ended
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Apr. 30, 2022 | Sep. 30, 2025
Public Utilities, General Disclosures [Line Items] |  |
Net capacity factor guarantee, measurement period started |  | 5 years
Net capacity factor guarantee, full period under coverage |  | 30 years
Net capacity factor guarantee, measurement period, first start period | 5 years |

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