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2024 HIGHLIGHTS - Transmission Auction (Details) - BRL (R$)
R$ in Thousands
 1 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2024
Highlights [Line Items]    
Auctioned Permitted Annual Revenues   R$ 590,540
Eletronorte    
Highlights [Line Items]    
Concession term (years) 30 years  
SPE Nova Era Catarina Transmissora SA    
Highlights [Line Items]    
Auctioned Permitted Annual Revenues   R$ 162,400
Construction period (months)   60 months
SPE Nova Era Cear Transmissora S.A.    
Highlights [Line Items]    
Auctioned Permitted Annual Revenues   R$ 114,500
Construction period (months)   60 months
SPE Nova Era Integrao Transmissora S.A.    
Highlights [Line Items]    
Auctioned Permitted Annual Revenues   R$ 302,000
Construction period (months)   66 months
SPE Nova Era Teresina Transmissora SA    
Highlights [Line Items]    
Auctioned Permitted Annual Revenues   R$ 11,640
Construction period (months)   42 months