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INVESTMENTS - Market value of investees (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Companhia de Transmisso de Energia Eltrica Paulista - CTEEP |  |
Associates |  |
Percentage of shares in associates | 35.74% | 35.03%
Fair value | R$ 6,465,890 | R$ 5,566,247
Equatorial Maranho Distribuidora de Energia S.A. |  |
Associates |  |
Percentage of shares in associates | 33.41% |
Fair value | R$ 1,605,618 | 1,348,024
Empresa Metropolitana de guas de Energia S.A. - EMAE |  |
Associates |  |
Percentage of shares in associates | 40.44% |
Fair value | R$ 881,517 | R$ 1,015,837

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