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v3.25.1

Operating Costs and Expenses (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes and other explanatory information [abstract] |
Schedule of operating costs and expenses |
| Operational costs | Selling expenses | General and administrative expenses | Other operational expenses, net | 12.31.2024 | 12.31.2023 | 12.31.2022
Non-manageable costs and expenses |  |  |  |  |  |  |
Electricity purchased for resale (29.1) | (8,924,895) |  | — |  | — |  | — |  | (8,924,895) |  | (7,716,190) |  | (8,096,910) |
Charge of the main distribution and transmission grid | (2,865,490) |  | — |  | — |  | — |  | (2,865,490) |  | (2,896,710) |  | (2,487,997) |
Materials and supplies for power electricity | (936) |  | — |  | — |  | — |  | (936) |  | (17,654) |  | (9,349) |
| (11,791,321) |  | — |  | — |  | — |  | (11,791,321) |  | (10,630,554) |  | (10,594,256) |
Manageable costs and expenses |  |  |  |  |  |  |
Personnel and management (29.2) | (721,764) |  | — |  | (360,033) |  | — |  | (1,081,797) |  | (1,878,332) |  | (977,904) |
Pension and healthcare plans (Note 21.2) | (178,232) |  | — |  | (81,120) |  | — |  | (259,352) |  | (260,159) |  | (260,197) |
Materials | (69,902) |  | — |  | (16,980) |  | — |  | (86,882) |  | (102,667) |  | (90,541) |
Third-party services (29.3) | (795,736) |  | (2,557) |  | (276,015) |  | — |  | (1,074,308) |  | (996,312) |  | (754,551) |
Credit losses, provisions and reversals (29.4) | (24,165) |  | (100,730) |  | — |  | (220,207) |  | (345,102) |  | (92,235) |  | (717,531) |
Other operational costs and expenses, net (29.6) | (278,237) |  | (33,834) |  | (48,004) |  | 119,233 |  | (240,842) |  | (430,544) |  | (489,318) |
| (2,068,036) |  | (137,121) |  | (782,152) |  | (100,974) |  | (3,088,283) |  | (3,760,249) |  | (3,290,042) |
Other |  |  |  |  |  |  |
Depreciation and amortization | (1,377,527) |  | — |  | (43,198) |  | (44,753) |  | (1,465,478) |  | (1,382,040) |  | (1,233,097) |
Construction cost (29.5) | (2,522,908) |  | — |  | — |  | — |  | (2,522,908) |  | (2,319,720) |  | (2,137,188) |
| (3,900,435) |  | — |  | (43,198) |  | (44,753) |  | (3,988,386) |  | (3,701,760) |  | (3,370,285) |
| (17,759,792) |  | (137,121) |  | (825,350) |  | (145,727) |  | (18,867,990) |  | (18,092,563) |  | (17,254,583) |
Schedule of electricity purchased for resale |
| 12.31.2024 | 12.31.2023 | 12.31.2022
Purchase of Energy in the Regulated Environment – CCEAR | 4,009,747 |  | 3,658,852 |  | 3,538,507 |
Itaipu Binacional | 950,389 |  | 980,302 |  | 1,460,955 |
Electric Energy Trade Chamber – CCEE | 832,656 |  | 431,303 |  | 370,207 |
Bilateral contracts | 1,849,268 |  | 1,998,640 |  | 2,609,713 |
Program for incentive to alternative energy sources – Proinfa | 337,978 |  | 370,495 |  | 437,461 |
Micro and mini generators | 1,726,602 |  | 1,125,857 |  | 675,804 |
Fair value in the purchase and sale of power | 36,604 |  | — |  | — |
(-) PIS/Pasep/Cofins taxes on electricity purchased for resale | (818,349) |  | (849,259) |  | (995,737) |
| 8,924,895 |  | 7,716,190 |  | 8,096,910 |
Schedule of personnel and management |
| 12.31.2024 | 12.31.2023 | 12.31.2022
Personnel |  |  |
Employee compensation | 557,666 |  | 742,449 |  | 625,237 |
Social charges on payroll | 186,502 |  | 220,148 |  | 207,364 |
Long-Term Incentive Plan - ILP (Note 27.6) | 1,531 |  | — |  | — |
Meal and education allowance | 97,709 |  | 109,307 |  | 95,229 |
Voluntary retirement program (Note 17.1) | 18,306 |  | 610,057 |  | (9,315) |
| 861,714 |  | 1,681,961 |  | 918,515 |
Management |  |  |
Management fees | 27,362 |  | 17,889 |  | 15,606 |
Long-Term Incentive Plan - ILP (Note 27.6) | 4,064 |  | — |  | — |
Social charges on payroll | 8,766 |  | 4,559 |  | 3,872 |
Other expenses | 608 |  | 261 |  | 256 |
| 40,800 |  | 22,709 |  | 19,734 |
Provisions for performance and profit sharing of employees and administrators | 179,283 |  | 173,662 |  | 39,655 |
| 1,081,797 |  | 1,878,332 |  | 977,904 |
Schedule of third party services |
| 12.31.2024 | 12.31.2023 | 12.31.2022
Maintenance of electrical system | 472,011 |  | 430,954 |  | 311,553 |
Maintenance of facilities | 139,924 |  | 117,981 |  | 89,741 |
Communication, processing and transmission of data | 119,281 |  | 107,818 |  | 91,101 |
Consumer service / call center | 104,700 |  | 100,574 |  | 83,203 |
Consulting and audit | 77,333 |  | 81,904 |  | 49,882 |
Meter reading and bill delivery | 60,308 |  | 58,734 |  | 53,660 |
Other services | 100,751 |  | 98,347 |  | 75,411 |
| 1,074,308 |  | 996,312 |  | 754,551 |
Schedule of credit losses, provisions and reversals |
| 12.31.2024 | 12.31.2023 | 12.31.2022
Provision for legal claims (Note 26) | 222,251 |  | 157,668 |  | 623,742 |
Impairment of assets |  |  |
Power generation concession contract (Note 9.3) | (3,590) |  | (3,193) |  | 9,061 |
Property, plant and equipment – generation segment (Note 15.4) | 27,755 |  | (174,500) |  | (34,435) |
Expected credit losses (Trade accounts and Other receivables) | 100,730 |  | 109,435 |  | 124,068 |
Tax credits estimated losses (reversal of losses) | (2,044) |  | 2,825 |  | (4,905) |
| 345,102 |  | 92,235 |  | 717,531 |
Schedule of construction costs |
| 12.31.2024 | 12.31.2023 | 12.31.2022
Materials | 1,519,486 |  | 1,409,633 |  | 1,227,418 |
Third party services | 785,333 |  | 689,886 |  | 694,306 |
Personnel | 170,749 |  | 184,246 |  | 171,369 |
Other | 47,340 |  | 35,955 |  | 44,095 |
| 2,522,908 |  | 2,319,720 |  | 2,137,188 |
Schedule of other operating costs and expenses, net |
| 12.31.2024 | 12.31.2023 | 12.31.2022
Financial offset for the use of water resources | 173,318 |  | 152,604 |  | 142,270 |
Insurance | 41,111 |  | 48,914 |  | 41,505 |
Advertising and publicity | 34,546 |  | 31,254 |  | 28,909 |
Collection charge | 33,831 |  | 43,022 |  | 47,923 |
Compensation | 30,435 |  | 21,699 |  | 14,703 |
Leasing and rent | 28,045 |  | 30,528 |  | 33,316 |
Taxes | 23,358 |  | 23,463 |  | 59,188 |
Aneel inspection fee | 19,458 |  | 18,248 |  | 15,683 |
Donations, contributions, grants, tax incentives | 4,434 |  | 8,808 |  | 6,521 |
Fair value of power generation concession assets | — |  | — |  | 26,451 |
Net losses (gains) in the decommissioning and disposal of assets (29.6.1) | (225,683) |  | 45,596 |  | 35,483 |
Other net income, costs and expenses | 77,989 |  | 6,408 |  | 37,366 |
| 240,842 |  | 430,544 |  | 489,318 |

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