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Accounts Receivables - Concessions (Tables)
 12 Months Ended
Dec. 31, 2024
Accounts Receivables - Concessions  
Schedule of accounts receivable
12.31.202412.31.2023
Power distribution service concession (9.1)2,610,731 1,954,679 
Bonus from the grant of concession agreements under the quota system (9.2)821,804 792,741 
Generation concession agreements (9.3)75,425 71,835 
3,507,960 2,819,255 
Current 10,609 9,354 
Noncurrent 3,497,351 2,809,901 
Schedule of power distribution service concession
Balance as of January 1, 20231,442,819 
Transfers from contract assets (Note 10.1)451,250 
Transfers to other receivables (assets held for disposal)(1,287)
Fair value recognition62,167 
Write-offs(270)
Balance as of December 31, 20231,954,679 
Transfers from contract assets (Note 10.1)578,820 
Transfers to other receivables (assets held for disposal)(1,927)
Fair value recognition82,424 
Write-offs(3,265)
Balance as of December 31, 20242,610,731 
Schedule of bonus from the grant of concession agreements
Balance as of January 1, 2023766,832 
Transfers to electricity grid use charges - customers(88,461)
Interest (Note 28.1)114,370 
Balance as of December 31, 2023792,741 
Transfers to electricity grid use charges - customers(91,737)
Interest (Note 28.1)120,800 
Balance as of December 31, 2024821,804 
Schedule of power generation concessions agreements
Balance as of January 1, 202368,642 
Fair value adjustment3,193 
Balance as of December 31, 202371,835 
Fair value adjustment3,590 
Balance as of December 31, 202475,425