INVESTMENTS - Valued using Equity method and provision for losses (Details) - BRL (R$) R$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Investments | ||
| Provision for losses on investments | R$ 6,477 | R$ 129,814 |
| Norte Energia S.A. - NESA | ||
| Investments | ||
| Provision for losses on investments | 0 | 7,262 |
| Companhia Energética Sinop | ||
| Investments | ||
| Provision for losses on investments | 6,477 | 40,723 |
| Empresa de Energia São Manoel | ||
| Investments | ||
| Provision for losses on investments | R$ 0 | R$ 81,829 |