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PROVISIONS FOR LITIGATION AND CONTINGENT LIABILITIES - Possible losses paragraphs - Contingent liabilities (Details) - BRL (R$) R$ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2015
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding | R$ 54,055,659 | R$ 47,023,866 |
Civil |  |  |
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding | 27,022,637 | 26,102,277 |
Labor |  |  |
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding | 2,151,677 | 2,297,320 |
Tax |  |  |
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding | 16,732,259 | 11,176,242 |
Environmental |  |  |
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding | 2,498,018 | 2,510,300 |
Regulatory |  |  |
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding | 5,651,068 | 4,937,727 |
Nullity of the trade union agreement |  |  |
Contingent liabilities |  |  |
Amount sought | 1,000,000 |  |
Insufficient collection or declaration for PIS/COFINS |  |  |
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding | R$ 1,801,737 | R$ 1,730,503 |
Chesf's contingent liability for collection of alleged losses to final consumers |  |  |
Contingent liabilities |  |  |
Estimate loss or value involved in the legal proceeding |  |  | R$ 1,471,885
Suspension request period | 6 months |  |

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