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RECOVERABLE VALUE OF LONG-TERM ASSETS- General (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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RECOVERABLE VALUE OF LONG-TERM ASSETS |  |  |
Impairment provisional balance | R$ 1,847,079 | R$ 2,689,823 |
Minimum |  |  |
RECOVERABLE VALUE OF LONG-TERM ASSETS |  |  |
Discount rate (as a percent) |  | 6.96% |
Maximum |  |  |
RECOVERABLE VALUE OF LONG-TERM ASSETS |  |  |
Discount rate (as a percent) | 13.56% |  |
Generation (except Angra 3) |  |  |
RECOVERABLE VALUE OF LONG-TERM ASSETS |  |  |
Discount rate without the SUDAM/SUDENE tax benefit |  | 4.82% |
Discount rate with the SUDAM/SUDENE tax benefit |  | 5.58% |
Generation |  |  |
RECOVERABLE VALUE OF LONG-TERM ASSETS |  |  |
Discount rate (as a percent) |  | 5.20% |
Discount rate without the SUDAM/SUDENE tax benefit | 5.81% |  |
Discount rate with the SUDAM/SUDENE tax benefit | 6.53% |  |
Impairment provisional balance | R$ 1,776,648 | R$ 2,620,752 | R$ 6,964,625
Generation | UTE Candiota |  |  |
RECOVERABLE VALUE OF LONG-TERM ASSETS |  |  |
Impairment provisional balance |  | R$ 1,043,193 |

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