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Insurance (Details)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
BRL (R$)
Operational Risks HPP Baixo Lguacu [member]  
IfrsStatementLineItems [Line Items]  
End of term 05.31.2024
Insured amount R$ 2,406,243
Operational Risks HPP Governador Jayme Canet Junior [member]  
IfrsStatementLineItems [Line Items]  
End of term 01.21.2025
Insured amount R$ 2,316,006
Operational Risks Cutia And Bento Miguel [member]  
IfrsStatementLineItems [Line Items]  
End of term 03.29.2024
Insured amount R$ 2,209,803
Named Perils [Member]  
IfrsStatementLineItems [Line Items]  
End of term 08.24.2024
Insured amount R$ 1,935,938
Operational Risks HPP Colider [member]  
IfrsStatementLineItems [Line Items]  
End of term 12.01.2024
Insured amount R$ 1,892,320
Operational Risks Aventura E SRMN [member]  
IfrsStatementLineItems [Line Items]  
End of term 11.28.2024
Insured amount R$ 1,092,864
Operational Risks Ventos de Serrado Mel II e IV [member]  
IfrsStatementLineItems [Line Items]  
End of term 11.28.2024
Insured amount R$ 1,086,211
Operational Risks Brisa Potiguar [Member]  
IfrsStatementLineItems [Line Items]  
End of term 08.25.2024
Insured amount R$ 1,039,962
Operational Risks Elejor [Member]  
IfrsStatementLineItems [Line Items]  
End of term 09.07.2024
Insured amount R$ 901,950
Fire Company Owned And Rented Facilities [Member]  
IfrsStatementLineItems [Line Items]  
End of term 08.24.2024
Insured amount R$ 787,464