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Operating Costs and Expenses (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | R$ (16,581,428) |  |
Selling expenses | (152,638) | R$ (175,669) | R$ (186,682)
General and administrative expenses | (1,078,037) | (733,695) | (870,858)
Other operating expenses, net | (280,460) | (739,635) | (220,835)
Total operating costs and expenses | (18,092,563) | (17,254,583) | (16,415,740)
Nonmanageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (10,630,554) |  |
Selling expenses |  |  |
General and administrative expenses |  |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (10,630,554) | (10,594,256) | (11,977,443)
Manageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (2,352,690) |  |
Selling expenses | (152,638) |  |
General and administrative expenses | (1,017,523) |  |
Other operating expenses, net | (237,398) |  |
Total operating costs and expenses | (3,760,249) | (3,290,042) | (3,102,926)
Other [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (3,598,184) |  |
Selling expenses |  |  |
General and administrative expenses | (60,514) |  |
Other operating expenses, net | (43,062) |  |
Total operating costs and expenses | (3,701,760) | (3,370,285) | (1,335,371)
Electricity Purchased For Resale [Member] | Nonmanageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (7,716,190) |  |
Selling expenses |  |  |
General and administrative expenses |  |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (7,716,190) | (8,096,910) | (9,503,743)
Charge Of The Main Distribution And Transmission Grid [Member] | Nonmanageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (2,896,710) |  |
Selling expenses |  |  |
General and administrative expenses |  |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (2,896,710) | (2,487,997) | (2,473,700)
Materials And Supplies For Power Electricity [Member] | Nonmanageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (17,654) |  |
Selling expenses |  |  |
General and administrative expenses |  |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (17,654) | (9,349) |
Personnel And Management [Member] | Manageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (1,281,861) |  |
Selling expenses |  |  |
General and administrative expenses | (596,471) |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (1,878,332) | (977,904) | (1,505,968)
Pension And Healthcare Plans [Member] | Manageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (177,275) |  |
Selling expenses |  |  |
General and administrative expenses | (82,884) |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (260,159) | (260,197) | (243,019)
Materials And Supplies [Member] | Manageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (82,419) |  |
Selling expenses |  |  |
General and administrative expenses | (20,248) |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (102,667) | (90,541) | (66,188)
Third Party Services [Member] | Manageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (735,766) |  |
Selling expenses | (180) |  |
General and administrative expenses | (260,366) |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (996,312) | (754,551) | (636,616)
Estimated Losses Provisions And Reversals [Member] | Manageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | 177,693 |  |
Selling expenses | (109,435) |  |
General and administrative expenses |  |  |
Other operating expenses, net | (160,493) |  |
Total operating costs and expenses | (92,235) | (717,531) | (294,844)
Other Operating Costs And Expenses Net [Member] | Manageable Costs And Expenses [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (253,062) |  |
Selling expenses | (43,023) |  |
General and administrative expenses | (57,554) |  |
Other operating expenses, net | (76,905) |  |
Total operating costs and expenses | (430,544) | (489,318) | (356,291)
Depreciation And Amortization [Member] | Other [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (1,278,464) |  |
Selling expenses |  |  |
General and administrative expenses | (60,514) |  |
Other operating expenses, net | (43,062) |  |
Total operating costs and expenses | (1,382,040) | (1,233,097) | (1,017,292)
Construction Cost [Member] | Other [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs | (2,319,720) |  |
Selling expenses |  |  |
General and administrative expenses |  |  |
Other operating expenses, net |  |  |
Total operating costs and expenses | (2,319,720) | (2,137,188) | (1,888,622)
Hydrological Risk Renegotiation Gsf [Member] | Other [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operational costs |  |  |
Selling expenses |  |  |
General and administrative expenses |  |  |
Other operating expenses, net |  |  |
Total operating costs and expenses |  |  | R$ 1,570,543

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