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Concession Financial and Sector Assets and Liabilities - Schedule of Sector Financial Assets and Liabilities Net (Details) R$ in Millions | 12 Months Ended
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Dec. 31, 2023 BRL (R$)
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | R$ 944 |
Sectorial Financial Assets, Additions | 2,851 |
Sectorial Financial Assets, Amortization | (3,915) |
Sectorial Financial Assets, Remuneration | 465 |
Sectorial Financial Assets, Transfer | 460 | [1]
Sectorial Financial Assets, Ending Balance | 805 |
Sectorial Financial Assets, Amortization | 89 |
Sectorial Financial Assets, Constitution | 716 |
Sectorial Financial Assets, Current | 493 |
Sectorial Financial Assets, Non-current | 312 |
Sectorial Financial Liabilities Additions During the Year | (2,435) |
Sectorial Financial Liabilities, Amortization | 3,288 |
Sectorial Financial Liabilities, Remuneration | (390) |
Sectorial Financial Liabilities, Transfer | (463) | [1]
Sectorial Financial Assets and Liabilities Net, Beginning Balance | 944 |
Sectorial Financial Assets and Liabilities Net, Additions | 416 |
Sectorial Financial Assets and Liabilities Net, Amortization | (627) |
Sectorial Financial Assets and Liabilities Net, Remuneration | 75 |
Sectorial Financial Assets and Liabilities Net, Transfer | (3) | [1]
Sectorial Financial Assets and Liabilities Net, Ending Balance | 805 |
Sectorial Financial Assets and Liabilities Net, Amortization | 89 |
Sectorial Financial Assets and Liabilities Net, Constitution | 716 |
Sectorial Financial Assets and Liabilities Net, Current | 493 |
Sectorial Financial Assets and Liabilities Net, Non-current | 312 |
CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | (345) |
Sectorial Financial Assets, Additions | 1,597 |
Sectorial Financial Assets, Amortization | (2,527) |
Sectorial Financial Assets, Remuneration | 260 |
Sectorial Financial Assets, Transfer | 330 | [1]
Sectorial Financial Assets, Ending Balance | (685) |
Sectorial Financial Assets, Amortization | (434) |
Sectorial Financial Assets, Constitution | (251) |
Sectorial Financial Assets, Current | (584) |
Sectorial Financial Assets, Non-current | (101) |
Energy aquisition (CVA energy) [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | (1,787) |
Sectorial Financial Assets, Additions | 1,213 |
Sectorial Financial Assets, Amortization | (1,223) |
Sectorial Financial Assets, Remuneration | 161 |
Sectorial Financial Assets, Transfer | 527 | [1]
Sectorial Financial Assets, Ending Balance | (1,109) |
Sectorial Financial Assets, Amortization | (443) |
Sectorial Financial Assets, Constitution | (666) |
Sectorial Financial Assets, Current | (837) |
Sectorial Financial Assets, Non-current | (272) |
Itaipu Energy Costs [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 594 |
Sectorial Financial Assets, Additions | (40) |
Sectorial Financial Assets, Amortization | (455) |
Sectorial Financial Assets, Remuneration | 44 |
Sectorial Financial Assets, Transfer | (114) | [1]
Sectorial Financial Assets, Ending Balance | 29 |
Sectorial Financial Assets, Amortization | 143 |
Sectorial Financial Assets, Constitution | (114) |
Sectorial Financial Assets, Current | 75 |
Sectorial Financial Assets, Non-current | (46) |
Program of Incentives for Alternative Electricity Sources - PROINFA [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 31 |
Sectorial Financial Assets, Amortization | (42) |
Sectorial Financial Assets, Remuneration | 1 |
Sectorial Financial Assets, Transfer | (10) | [1]
Sectorial Financial Assets, Ending Balance | (20) |
Sectorial Financial Assets, Amortization | (19) |
Sectorial Financial Assets, Constitution | (1) |
Sectorial Financial Assets, Current | (20) |
Transport Basic Charges [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 215 |
Sectorial Financial Assets, Additions | 388 |
Sectorial Financial Assets, Amortization | (265) |
Sectorial Financial Assets, Remuneration | 40 |
Sectorial Financial Assets, Transfer | 35 | [1]
Sectorial Financial Assets, Ending Balance | 413 |
Sectorial Financial Assets, Amortization | 114 |
Sectorial Financial Assets, Constitution | 299 |
Sectorial Financial Assets, Current | 291 |
Sectorial Financial Assets, Non-current | 122 |
Transport of Itaipu Supply [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 18 |
Sectorial Financial Assets, Additions | 60 |
Sectorial Financial Assets, Amortization | (20) |
Sectorial Financial Assets, Remuneration | 4 |
Sectorial Financial Assets, Transfer | 5 | [1]
Sectorial Financial Assets, Ending Balance | 67 |
Sectorial Financial Assets, Amortization | 14 |
Sectorial Financial Assets, Constitution | 53 |
Sectorial Financial Assets, Current | 45 |
Sectorial Financial Assets, Non-current | 22 |
System Service Charges - ESS [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 583 |
Sectorial Financial Assets, Additions | (24) |
Sectorial Financial Assets, Amortization | (380) |
Sectorial Financial Assets, Remuneration | 7 |
Sectorial Financial Assets, Transfer | (248) | [1]
Sectorial Financial Assets, Ending Balance | (62) |
Sectorial Financial Assets, Amortization | (242) |
Sectorial Financial Assets, Constitution | 180 |
Sectorial Financial Assets, Current | (136) |
Sectorial Financial Assets, Non-current | 74 |
CDE [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 1 |
Sectorial Financial Assets, Amortization | (142) |
Sectorial Financial Assets, Remuneration | 3 |
Sectorial Financial Assets, Transfer | 135 | [1]
Sectorial Financial Assets, Ending Balance | (3) |
Sectorial Financial Assets, Amortization | (1) |
Sectorial Financial Assets, Constitution | (2) |
Sectorial Financial Assets, Current | (2) |
Sectorial Financial Assets, Non-current | (1) |
Other Sectoral Financial Assets [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 1,289 |
Sectorial Financial Assets, Additions | 1,254 |
Sectorial Financial Assets, Amortization | (1,388) |
Sectorial Financial Assets, Remuneration | 205 |
Sectorial Financial Assets, Transfer | 130 | [1]
Sectorial Financial Assets, Ending Balance | 1,490 |
Sectorial Financial Assets, Amortization | 523 |
Sectorial Financial Assets, Constitution | 967 |
Sectorial Financial Assets, Current | 1,077 |
Sectorial Financial Assets, Non-current | 413 |
Quotas from Nuclear Energy [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 105 |
Sectorial Financial Assets, Additions | 103 |
Sectorial Financial Assets, Amortization | (86) |
Sectorial Financial Assets, Remuneration | 16 |
Sectorial Financial Assets, Ending Balance | 138 |
Sectorial Financial Assets, Amortization | 51 |
Sectorial Financial Assets, Constitution | 87 |
Sectorial Financial Assets, Current | 102 |
Sectorial Financial Assets, Non-current | 36 |
Neutrality of Parcel A [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 203 |
Sectorial Financial Assets, Additions | 168 |
Sectorial Financial Assets, Amortization | (51) |
Sectorial Financial Assets, Remuneration | 5 |
Sectorial Financial Assets, Transfer | 61 | [1]
Sectorial Financial Assets, Ending Balance | 386 |
Sectorial Financial Assets, Amortization | (29) |
Sectorial Financial Assets, Constitution | 415 |
Sectorial Financial Assets, Current | 363 |
Sectorial Financial Assets, Non-current | 23 |
Energy Over Contracting [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 750 | [2]
Sectorial Financial Assets, Additions | 643 | [2]
Sectorial Financial Assets, Amortization | (529) | [2]
Sectorial Financial Assets, Remuneration | 58 | [2]
Sectorial Financial Assets, Ending Balance | 922 | [2]
Sectorial Financial Assets, Amortization | 349 | [2]
Sectorial Financial Assets, Constitution | 573 | [2]
Sectorial Financial Assets, Current | 688 | [2]
Sectorial Financial Assets, Non-current | 234 | [2]
Tariff Refunds [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | (71) |
Sectorial Financial Assets, Transfer | (17) | [1]
Sectorial Financial Assets, Ending Balance | (88) |
Sectorial Financial Assets, Amortization | (25) |
Sectorial Financial Assets, Constitution | (63) |
Sectorial Financial Assets, Current | (67) |
Sectorial Financial Assets, Non-current | (21) |
Other [Member] | CVA Assets [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Beginning Balance | 302 |
Sectorial Financial Assets, Additions | 340 |
Sectorial Financial Assets, Amortization | (722) |
Sectorial Financial Assets, Remuneration | 126 |
Sectorial Financial Assets, Transfer | 86 | [1]
Sectorial Financial Assets, Ending Balance | 132 |
Sectorial Financial Assets, Amortization | 177 |
Sectorial Financial Assets, Constitution | (45) |
Sectorial Financial Assets, Current | (9) |
Sectorial Financial Assets, Non-current | 141 |
CVA Liabilities [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities Additions During the Year | (1,706) |
Sectorial Financial Liabilities, Amortization | 2,380 |
Sectorial Financial Liabilities, Remuneration | (343) |
Sectorial Financial Liabilities, Transfer | (331) | [1]
CVA Liabilities [Member] | Energy aquisition (CVA energy) [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities Additions During the Year | (1,179) |
Sectorial Financial Liabilities, Amortization | 1,941 |
Sectorial Financial Liabilities, Remuneration | (234) |
Sectorial Financial Liabilities, Transfer | (528) | [1]
CVA Liabilities [Member] | Itaipu Energy Costs [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Additions | (109) |
Sectorial Financial Liabilities, Remuneration | (5) |
Sectorial Financial Liabilities, Transfer | 114 | [1]
CVA Liabilities [Member] | Program of Incentives for Alternative Electricity Sources - PROINFA [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Additions | (31) |
Sectorial Financial Liabilities, Amortization | 25 |
Sectorial Financial Liabilities, Remuneration | (4) |
Sectorial Financial Liabilities, Transfer | 10 | [1]
CVA Liabilities [Member] | Transport Basic Charges [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities, Amortization | 35 |
Sectorial Financial Liabilities, Transfer | (35) | [1]
CVA Liabilities [Member] | Transport of Itaipu Supply [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities, Amortization | 5 |
Sectorial Financial Liabilities, Transfer | (5) | [1]
CVA Liabilities [Member] | System Service Charges - ESS [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities Additions During the Year | (506) |
Sectorial Financial Liabilities, Amortization | 371 |
Sectorial Financial Liabilities, Remuneration | (113) |
Sectorial Financial Liabilities, Transfer | 248 | [1]
CVA Liabilities [Member] | CDE [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Assets, Additions | 119 |
Sectorial Financial Liabilities, Amortization | 3 |
Sectorial Financial Liabilities, Remuneration | 13 |
Sectorial Financial Liabilities, Transfer | (135) | [1]
CVA Liabilities [Member] | Other Sectoral Financial Liabilities [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities Additions During the Year | (729) |
Sectorial Financial Liabilities, Amortization | 908 |
Sectorial Financial Liabilities, Remuneration | (47) |
Sectorial Financial Liabilities, Transfer | (132) | [1]
CVA Liabilities [Member] | Neutrality of Parcel A [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities Additions During the Year | (58) |
Sectorial Financial Liabilities, Amortization | 124 |
Sectorial Financial Liabilities, Remuneration | (5) |
Sectorial Financial Liabilities, Transfer | (61) | [1]
CVA Liabilities [Member] | Tariff Refunds [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities Additions During the Year | (88) |
Sectorial Financial Liabilities, Amortization | 73 |
Sectorial Financial Liabilities, Remuneration | (2) |
Sectorial Financial Liabilities, Transfer | 17 | [1]
CVA Liabilities [Member] | Other [Member] |  |
Disclosure of detailed information about service concession arrangements [line items] |  |
Sectorial Financial Liabilities Additions During the Year | (583) |
Sectorial Financial Liabilities, Amortization | 711 |
Sectorial Financial Liabilities, Remuneration | (40) |
Sectorial Financial Liabilities, Transfer | R$ (88) | [1]
[1] | In addition to the transfers between sectoral financial assets and liabilities, there was a transfer of R$1,550 to the "Other assets" group.
[2] | Reversal of the over contracting amounts passed on to consumers in the 2018 and 2019 tariff adjustments because they were previously recognized by ANEEL as involuntary over contracting, made possible by the publication of the involuntariness orders, recognizing over contracting as voluntary. Regarding the amount constituted in the period, there is a high volume of surplus energy, mainly due to the growing increase in the energy injected by MMGD facilities, settled at a low PLD.

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