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INVESTMENTS - Measured at fair value (Details) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Investments recognized at fair value |  |
Fair value | R$ 861,234 | R$ 1,072,093
AES TIET ENERGIA S/A |  |
Investments recognized at fair value |  |
Fair value |  | 38,990
Companhia Energtica do Cear - COELCE |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 7.10% |
Fair value | R$ 120,320 | 193,330
Energisa Holding |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 1.03% |
Fair value | R$ 171,873 | 248,904
Auren Energia S.A. |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 0.05% |
Fair value | R$ 4,605 | 6,978
Centrais Eletricas de Santa Catarina - CELESC |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 10.75% |
Fair value | R$ 333,818 | 270,991
Cia Estadual de Distribuio de Energia Eltrica - CEEE |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 4.62% |
Fair value | R$ 44,661 | 68,575
Equatorial Energia Par |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 0.99% |
Fair value | R$ 125,704 | 169,356
Rio Parapanema Energia |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 0.47% |
Fair value | R$ 13,136 | 11,524
Companhia Energetica de Brasilia - CEB |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 2.10% |
Fair value | R$ 24,350 | 25,039
Others |  |
Investments recognized at fair value |  |
Fair value | R$ 22,767 | R$ 38,406
Others | Minimum |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 0.03% |
Others | Maximum |  |
Investments recognized at fair value |  |
Percentage of participations for fair value investments | 0.13% |

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