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25 Research and Development and Energy Efficiency (Tables) | 12 Months Ended
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Dec. 31, 2020
Research And Development And Energy Efficiency [Abstract] |
Schedule of investment in research and development and the energy efficiency program |
25.1 | Balances recognized for investment in Research and Development (R&D) activities and the Energy Efficiency Program (EEP)
| Amounts payable, before any related prepayments | Amounts payable to regulatory agencies | Other amounts payable | Balance as of | Balance as of
| 12.31.2020 | 12.31.2019
Research and Development - R&D |  |  |  |  |
FNDCT | - | 8,085 | - | 8,085 | 4,046
MME | - | 4,041 | - | 4,041 | 2,023
R&D | 221,977 | - | 110,769 | 332,746 | 341,658
| 221,977 | 12,126 | 110,769 | 344,872 | 347,727
Energy efficiency program- EEP |  |  |  |  |
Procel | - | 5,855 | - | 5,855 | 16,410
EEP | 36,756 | - | 277,528 | 314,284 | 294,034
| 36,756 | 5,855 | 277,528 | 320,139 | 310,444
| 258,733 | 17,981 | 388,297 | 665,011 | 658,171
|  |  | Circulante | 380,186 | 375,395
|  |  | Não circulante | 284,825 | 282,776
Schedule of changes in research and development and the energy efficiency program |
25.2 | Changes in R&D and EEP balances
| FNDCT | MME | R&D | Procel | EEP | Total
Balance as of January 1, 2019 | 4,725 | 2,361 | 327,626 | 15,792 | 242,231 | 592,735
Business combination effects | 20 | 10 | 1,464 | - | - | 1,494
Additions | 32,311 | 16,155 | 32,312 | 9,333 | 37,321 | 127,432
Performance agreement | - | - | - | - | 3,246 | 3,246
Interest rate (Note 33) | - | - | 10,627 | 51 | 13,892 | 24,570
Transfers | - | - | - | (3,123) | 3,123 | -
Payments | (33,010) | (16,503) | - | (5,643) | 990 | (54,166)
Concluded projects | - | - | (30,371) | - | (6,769) | (37,140)
Balance as of December 31, 2019 | 4,046 | 2,023 | 341,658 | 16,410 | 294,034 | 658,171
Additions | 37,427 | 18,716 | 37,426 | 10,181 | 40,724 | 144,474
Performance agreement | - | - | - | - | 3,545 | 3,545
Interest rate (Note 33) | - | - | 4,253 | 1,469 | 6,828 | 12,550
Transfers | - | - | - | (616) | 616 | -
Payments | (33,388) | (16,698) | - | (21,589) | - | (71,675)
Concluded projects | - | - | (50,591) | - | (31,463) | (82,054)
Balance as of December 31, 2020 | 8,085 | 4,041 | 332,746 | 5,855 | 314,284 | 665,011

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