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v3.25.1

Research and Development and Energy Efficiency | 12 Months Ended
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Dec. 31, 2024
Notes and other explanatory information [abstract] |
Research and Development and Energy Efficiency | 22. Research and Development and Energy Efficiency
| Disbursed and not completed | Balance to be collected | Balance to disburse | Balance as of | Balance as of
12.31.2024 | 12.31.2023
Research and Development – R&D |  |  |  |  |
FNDCT | — |  | 7,217 |  | — |  | 7,217 |  | 5,781 |
MME | — |  | 3,608 |  | — |  | 3,608 |  | 2,891 |
R&D | 62,948 |  | 1,534 |  | 44,751 |  | 109,233 |  | 201,871 |
| 62,948 |  | 12,359 |  | 44,751 |  | 120,058 |  | 210,543 |
Energy efficiency program – EEP |  |  |  |  |
Procel | — |  | 4,322 |  | — |  | 4,322 |  | 23,613 |
EEP | 137,832 |  | 4,654 |  | 153,577 |  | 296,063 |  | 319,518 |
| 137,832 |  | 8,976 |  | 153,577 |  | 300,385 |  | 343,131 |
| 200,780 |  | 21,335 |  | 198,328 |  | 420,443 |  | 553,674 |
|  |  | Current | 179,149 |  | 320,196 |
|  |  | Noncurrent | 241,294 |  | 233,478 |
National Fund for Scientific and Technological Development – FNDCT National Program of Electricity Conservation – Procel In accordance with Law No. 9,991/2000 and supplementary regulations, concession operators and licensees of electric power generation and transmission are required to allocate annually the percentage of 1% of their net operating regulatory revenue to research and development of the electricity sector activities, and the electric power distribution concession operators must segregate this same percentage into the research and development and energy efficiency programs of the electricity sector. 22.1. Changes in R&D and EEP balances
| FNDCT | MME | R&D | Procel | EEP | Total
Balance as of January 1, 2023 | 6,588 |  | 3,314 |  | 260,243 |  | 11,960 |  | 332,653 |  | 614,758 |
Additions | 40,011 |  | 20,004 |  | 40,019 |  | 12,200 |  | 48,805 |  | 161,039 |
Performance agreement | — |  | — |  | — |  | — |  | 4,420 |  | 4,420 |
Interest rate (Note 30) | — |  | — |  | 4,938 |  | (547) |  | 21,618 |  | 26,009 |
Transfers (a) | 5,802 |  | 2,900 |  | 1,739 |  | — |  | — |  | 10,441 |
Payments | (46,620) |  | (23,327) |  | (9,695) |  | — |  | (16,450) |  | (96,092) |
Concluded projects | — |  | — |  | (87,675) |  | — |  | (71,528) |  | (159,203) |
Reclassification (b) | — |  | — |  | (7,698) |  | — |  | — |  | (7,698) |
Balance as of December 31, 2023 | 5,781 |  | 2,891 |  | 201,871 |  | 23,613 |  | 319,518 |  | 553,674 |
Additions | 41,949 |  | 20,973 |  | 41,960 |  | 13,947 |  | 55,787 |  | 174,616 |
Performance agreement | — |  | — |  | — |  | — |  | 7,059 |  | 7,059 |
Interest rate (Note 30) | — |  | — |  | 4,452 |  | 1,495 |  | 16,103 |  | 22,050 |
Transfers | — |  | — |  | — |  | (4,066) |  | 4,066 |  | — |
Payments | (40,513) |  | (20,256) |  | (11,252) |  | (30,667) |  | (49,116) |  | (151,804) |
Concluded projects | — |  | — |  | (127,798) |  | — |  | (57,354) |  | (185,152) |
Balance as of December 31, 2024 | 7,217 |  | 3,608 |  | 109,233 |  | 4,322 |  | 296,063 |  | 420,443 |
(a) Transfers to assets - Law No. 14,514/2023 (b) Reclassification to Liabilities classified as held for sale (Note 37).

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