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Net Operating Revenue (Details 3) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net Operating Revenue [Line Items]      
Regulatory charges R$ 3,250,371 R$ 2,952,146 R$ 3,669,468
Energy Development Account CDE Energia [Member]      
Net Operating Revenue [Line Items]      
Regulatory charges 2,683,329 2,659,092 2,670,262
Other Charges Rate Flags [Member]      
Net Operating Revenue [Line Items]      
Regulatory charges 247,021 1,216 724,414
Research And Development And Energy Efficiency [Member]      
Net Operating Revenue [Line Items]      
Regulatory charges 174,616 161,039 153,152
Global Reversion Reserve RGR Quota [Member]      
Net Operating Revenue [Line Items]      
Regulatory charges 50,475 46,750 42,103
Energy Development Account CDE Uso [Member]      
Net Operating Revenue [Line Items]      
Regulatory charges 78,500 68,901 65,460
Inspection Fee [Member]      
Net Operating Revenue [Line Items]      
Regulatory charges R$ 16,430 R$ 15,148 R$ 14,077