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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | R$ 34,739,705 | R$ 33,367,981 |
Effects of deconsolidation |  | (13,760,535) |
Acquisition of investee control | 4,573,248 | 17,861,290 |
Addition | 2,796,504 | 1,996,833 |
Write-offs | (51,416) | 3,436,984 |
Depreciation | (1,975,400) | (1,644,943) |
Transfers assets held for sale | (3,586,047) |  |
Transfer | (691,173) | 356,063 |
Property, plant and equipment at end of period | 35,805,421 | 34,739,705 | R$ 33,367,981
Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 82,365,222 | 86,027,151 |
Property, plant and equipment at end of period | 82,123,503 | 82,365,222 | 86,027,151
Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (47,625,517) | (52,659,170) |
Property, plant and equipment at end of period | (46,318,082) | (47,625,517) | (52,659,170)
Impairment. |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (2,536,835) | (6,963,604) |
Effects of deconsolidation |  | 4,508,764 |
Addition | (1,073,345) | (287,874) |
Write-offs | 73,635 | (205,879) |
Transfers assets held for sale | 1,829,696 |  |
Transfer | (62,721) |  |
Property, plant and equipment at end of period | (1,769,570) | R$ (2,536,835) | R$ (6,963,604)
Dams, reservoirs and water mains |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 2.00% | 2.60%
Property, plant and equipment at beginning of period | 11,466,291 | R$ 6,412,995 |
Effects of deconsolidation |  | (1,283) |
Acquisition of investee control | 2,973,633 | 6,506,951 |
Addition | 532 |  |
Write-offs | (19,443) | 1,675,657 |
Depreciation | (602,937) | (495,697) |
Transfers assets held for sale | (167,687) |  |
Transfer | (287,158) | 718,982 |
Property, plant and equipment at end of period | 13,363,232 | 11,466,291 | R$ 6,412,995
Dams, reservoirs and water mains | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 22,752,509 | 15,418,627 |
Property, plant and equipment at end of period | 25,243,381 | 22,752,509 | 15,418,627
Dams, reservoirs and water mains | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (11,286,218) | (9,005,632) |
Property, plant and equipment at end of period | (11,880,149) | R$ (11,286,218) | R$ (9,005,632)
Buildings, civil works and improvements |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 2.50% | 3.39%
Property, plant and equipment at beginning of period | 5,357,370 | R$ 2,885,165 |
Effects of deconsolidation |  | (492,840) |
Acquisition of investee control | 1,127,662 | 3,532,292 |
Addition | 11,764 |  |
Write-offs | (155) | 462,751 |
Depreciation | (290,467) | (212,702) |
Transfers assets held for sale | (140,959) |  |
Transfer | 61,351 | 108,206 |
Property, plant and equipment at end of period | 6,126,565 | 5,357,370 | R$ 2,885,165
Buildings, civil works and improvements | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 10,977,909 | 8,214,167 |
Property, plant and equipment at end of period | 11,940,669 | 10,977,909 | 8,214,167
Buildings, civil works and improvements | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (5,620,539) | (5,329,002) |
Property, plant and equipment at end of period | (5,814,104) | R$ (5,620,539) | R$ (5,329,002)
Machines and equipment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 3.30% | 3.32%
Property, plant and equipment at beginning of period | 16,466,066 | R$ 12,225,806 |
Effects of deconsolidation |  | (3,124,977) |
Acquisition of investee control | 203,498 | 7,329,149 |
Addition | 216,012 | 249,346 |
Write-offs | (53,134) | 1,149,201 |
Depreciation | (952,293) | (766,561) |
Transfers assets held for sale | (3,929,766) |  |
Transfer | 431,611 | 1,702,504 |
Property, plant and equipment at end of period | 12,381,994 | 16,466,066 | R$ 12,225,806
Machines and equipment | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 43,366,208 | 42,054,751 |
Property, plant and equipment at end of period | 37,765,942 | 43,366,208 | 42,054,751
Machines and equipment | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (26,900,142) | (29,828,945) |
Property, plant and equipment at end of period | (25,383,948) | R$ (26,900,142) | R$ (29,828,945)
Right-of-use |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 3.50% | 6.22%
Property, plant and equipment at beginning of period | 955,149 | R$ 1,044,304 |
Effects of deconsolidation |  | (8,514) |
Acquisition of investee control | 378 | 2,023 |
Addition | 12,075 | 17,254 |
Write-offs | (5,371) | 84 |
Depreciation | (92,403) | (99,806) |
Transfers assets held for sale | (710,857) |  |
Transfer |  | (28) |
Property, plant and equipment at end of period | 158,971 | 955,149 | R$ 1,044,304
Right-of-use | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 2,052,882 | 2,112,362 |
Property, plant and equipment at end of period | 1,350,009 | 2,052,882 | 2,112,362
Right-of-use | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (1,097,733) | (1,068,058) |
Property, plant and equipment at end of period | (1,191,038) | (1,097,733) | (1,068,058)
In progress |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 2,716,242 | 17,484,344 |
Effects of deconsolidation |  | (14,600,061) |
Acquisition of investee control | 13,028 | 141,896 |
Addition | 3,847,094 | 2,014,982 |
Write-offs | (28,670) | 150,362 |
Transfers assets held for sale | (462,734) |  |
Transfer | (1,584,868) | (2,174,557) |
Property, plant and equipment at end of period | 4,500,092 | 2,716,242 | 17,484,344
In progress | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 2,716,242 | 17,484,344 |
Property, plant and equipment at end of period | 4,500,092 | R$ 2,716,242 | R$ 17,484,344
Others |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Average rate of depreciation |  | 5.80% | 1.10%
Property, plant and equipment at beginning of period | 315,422 | R$ 278,971 |
Effects of deconsolidation |  | (41,624) |
Acquisition of investee control | 255,049 | 348,979 |
Addition | (217,628) | 3,125 |
Write-offs | (18,278) | 204,808 |
Depreciation | (37,300) | (70,177) |
Transfers assets held for sale | (3,740) |  |
Transfer | 750,612 | 956 |
Property, plant and equipment at end of period | 1,044,137 | 315,422 | R$ 278,971
Others | Cost |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | 499,472 | 742,900 |
Property, plant and equipment at end of period | 1,323,410 | 499,472 | 742,900
Others | Accumulated Depreciation and Impairment |  |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |
Property, plant and equipment at beginning of period | (184,050) | (463,929) |
Property, plant and equipment at end of period | R$ (279,273) | R$ (184,050) | R$ (463,929)

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