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Insurance (Details)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
BRL (R$)
Operational Risks HPP Baixo Lguacu [Member]  
Disclosure of insurance [Line Items]  
End of term 05.31.2025
Insurance expense R$ 2,764,597
Operational Risks HPP Governador Jayme Canet Junior [member]  
Disclosure of insurance [Line Items]  
End of term 01.21.2026
Insurance expense R$ 2,334,953
Operational Risks Cutia And Bento Miguel [Member]  
Disclosure of insurance [Line Items]  
End of term 03.29.2025
Insurance expense R$ 2,225,164
Named Perils [Member]  
Disclosure of insurance [Line Items]  
End of term 08.24.2025
Insurance expense R$ 1,989,267
Operational Risks HPP Colider [Member]  
Disclosure of insurance [Line Items]  
End of term 12.01.2025
Insurance expense R$ 1,892,320
Operational Risks Aventura E SRMN [Member]  
Disclosure of insurance [Line Items]  
End of term 11.28.2025
Insurance expense R$ 1,221,932
Operational Risks Brisa Potiguar [Member]  
Disclosure of insurance [Line Items]  
End of term 11.28.2025
Insurance expense R$ 1,101,652
Operational Risks Ventos de Serrado Mel II e IV [Member]  
Disclosure of insurance [Line Items]  
End of term 11.28.2025
Insurance expense R$ 1,101,502
Operational Risks Elejor [Member]  
Disclosure of insurance [Line Items]  
End of term 09.07.2025
Insurance expense R$ 901,950
Fire Company Owned And Rented Facilities [Member]  
Disclosure of insurance [Line Items]  
End of term 08.24.2025
Insurance expense R$ 772,189