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PROPERTY, PLANT AND EQUIPMENT - Movement of property, plant, and equipment (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | R$ 35,805,421 | R$ 34,739,705 |
Acquisition of investee control |  | 4,573,248 |
Addition | 2,892,180 | 2,796,504 |
Write-offs | 587,035 | (51,416) |
Depreciation | (1,907,233) | (1,975,400) |
Transfers assets held for sale | (519,661) | (3,586,047) |
Transfer | (3,687) | (691,173) |
Property, plant and equipment at end of period | 36,854,056 | 35,805,421 | R$ 34,739,705
Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 82,056,338 | 82,365,221 |
Property, plant and equipment at end of period | 83,946,366 | 82,056,338 | 82,365,221
Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (46,250,916) | (47,625,516) |
Property, plant and equipment at end of period | (47,092,310) | (46,250,916) | (47,625,516)
Impairment. |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (1,702,404) | (2,536,835) |
Addition | (116,508) | (1,073,345) |
Write-offs | 650,278 | 73,635 |
Transfers assets held for sale |  | 1,829,696 |
Transfer | (7,078) | 4,445 |
Property, plant and equipment at end of period | (1,175,712) | R$ (1,702,404) | R$ (2,536,835)
Dams, reservoirs and water mains |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 1.72% | 2.00%
Property, plant and equipment at beginning of period | 13,363,232 | R$ 11,466,292 |
Acquisition of investee control |  | 2,973,633 |
Addition | 22,208 | 532 |
Write-offs | (12,775) | (19,443) |
Depreciation | (914,695) | (602,937) |
Transfers assets held for sale | (267,316) | (167,687) |
Transfer | 354,524 | (287,158) |
Property, plant and equipment at end of period | 12,545,178 | 13,363,232 | R$ 11,466,292
Dams, reservoirs and water mains | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 25,243,381 | 22,752,509 |
Property, plant and equipment at end of period | 25,158,794 | 25,243,381 | 22,752,509
Dams, reservoirs and water mains | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (11,880,149) | (11,286,217) |
Property, plant and equipment at end of period | (12,613,616) | R$ (11,880,149) | R$ (11,286,217)
Buildings, civil works and improvements |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 1.69% | 2.50%
Property, plant and equipment at beginning of period | 6,126,565 | R$ 5,357,369 |
Acquisition of investee control |  | 1,127,662 |
Addition | 2,695 | 11,764 |
Write-offs | 295 | (155) |
Depreciation | (355,849) | (290,467) |
Transfers assets held for sale | (68,366) | (140,959) |
Transfer | 66,972 | 61,351 |
Property, plant and equipment at end of period | 5,772,312 | 6,126,565 | R$ 5,357,369
Buildings, civil works and improvements | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 11,940,669 | 10,977,908 |
Property, plant and equipment at end of period | 11,892,050 | 11,940,669 | 10,977,908
Buildings, civil works and improvements | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (5,814,104) | (5,620,539) |
Property, plant and equipment at end of period | (6,119,738) | R$ (5,814,104) | R$ (5,620,539)
Machines and equipment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 2.75% | 3.30%
Property, plant and equipment at beginning of period | 12,381,994 | R$ 16,466,066 |
Acquisition of investee control |  | 203,498 |
Addition | 47,956 | 216,012 |
Write-offs | (22,400) | (53,134) |
Depreciation | (544,344) | (952,293) |
Transfers assets held for sale | (135,482) | (3,929,766) |
Transfer | 1,470,547 | 431,611 |
Property, plant and equipment at end of period | 13,198,271 | 12,381,994 | R$ 16,466,066
Machines and equipment | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 37,765,942 | 43,366,208 |
Property, plant and equipment at end of period | 38,860,152 | 37,765,942 | 43,366,208
Machines and equipment | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (25,383,948) | (26,900,142) |
Property, plant and equipment at end of period | (25,661,881) | R$ (25,383,948) | R$ (26,900,142)
Right-of-use |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 3.84% | 3.50%
Property, plant and equipment at beginning of period | 158,971 | R$ 955,149 |
Acquisition of investee control |  | 378 |
Addition | 5,667 | 12,075 |
Write-offs |  | (5,371) |
Depreciation | (45,331) | (92,403) |
Transfers assets held for sale |  | (710,857) |
Transfer | 31,218 |  |
Property, plant and equipment at end of period | 150,525 | 158,971 | R$ 955,149
Right-of-use | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 1,350,009 | 2,052,882 |
Property, plant and equipment at end of period | 1,386,894 | 1,350,009 | 2,052,882
Right-of-use | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (1,191,038) | (1,097,733) |
Property, plant and equipment at end of period | (1,236,369) | (1,191,038) | (1,097,733)
In progress |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 4,432,927 | 2,716,242 |
Acquisition of investee control |  | 13,028 |
Addition | 2,845,292 | 3,847,094 |
Write-offs | (16,048) | (28,670) |
Transfers assets held for sale | (4,690) | (462,734) |
Transfer | (2,115,630) | (1,652,033) |
Property, plant and equipment at end of period | 5,141,851 | 4,432,927 | 2,716,242
In progress | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 4,432,927 | 2,716,242 |
Property, plant and equipment at end of period | 5,141,851 | R$ 4,432,927 | R$ 2,716,242
Others |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 1.10% | 5.80%
Property, plant and equipment at beginning of period | 1,044,137 | R$ 315,422 |
Acquisition of investee control |  | 255,049 |
Addition | 84,870 | (217,628) |
Write-offs | (12,315) | (18,278) |
Depreciation | (47,014) | (37,300) |
Transfers assets held for sale | (43,807) | (3,740) |
Transfer | 195,760 | 750,612 |
Property, plant and equipment at end of period | 1,221,631 | 1,044,137 | R$ 315,422
Others | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 1,323,410 | 499,472 |
Property, plant and equipment at end of period | 1,506,625 | 1,323,410 | 499,472
Others | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (279,273) | (184,050) |
Property, plant and equipment at end of period | R$ (284,994) | R$ (279,273) | R$ (184,050)

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