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CONTRACTUAL TRANSMISSION ASSETS - Movements (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Investments in subsidiaries, joint ventures and associates [abstract] |  |
Regulatory remeasurements - Transmission Contracts | R$ 6,129,771 |
Balance at end of period | R$ 67,387,656 |
Discount rate for renewed contracts awarded (as a percent) | 6.55% |
Average discount rate for renewed contracts (as a percent) | 6.63% |
Furnas [Member] |  |
Investments in subsidiaries, joint ventures and associates [abstract] |  |
Balance at beginning of period | R$ 61,212,338 |
Construction revenue | 4,161,735 |
Financial income | 7,405,486 |
Regulatory remeasurements - Transmission Contracts | 6,129,771 |
Transfers | 1,154 |
Amortization | (11,522,828) |
Balance at end of period | 67,387,656 | R$ 61,212,338
Current | 10,539,570 |
Non-current | 56,848,086 |
Chesf |  |
Investments in subsidiaries, joint ventures and associates [abstract] |  |
Balance at beginning of period | R$ 61,212,338 | 61,052,210
Merge |  | 1,049,923
Construction revenue |  | 2,960,792
Financial income |  | 7,136,080
Regulatory remeasurements - Transmission Contracts |  | (12,144)
Transfers |  | (21,778)
Amortization |  | (10,952,745)
Balance at end of period |  | 61,212,338
Current |  | 11,159,426
Non-current |  | R$ 50,052,912

X
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