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Trade receivables (Tables)
 12 Months Ended
Dec. 31, 2024
Notes and other explanatory information [abstract]  
Schedule of trade receivables
         
       12.31.24     12.31.23 
Current:          
Sales of electricity – Billed                 164,126                77,449
Receivables in litigation                       456                     226
Allowance for the impairment of trade receivables                (11,365)              (13,591)
Subtotal                153,217                64,084
           
Sales of electricity – Unbilled                206,150                74,506
PBA & CABA government credit                    2,998                  6,429
Fee payable for the expansion of the transportation and others                          2                        5
Total current                362,367              145,024
Schedule of allowance for the impairment of trade receivables
         
       12.31.24     12.31.23 
Balance at beginning of the year                  13,591                31,425
Increase                    9,423                14,384
Decrease                  (3,700)                (3,410)
Result from exposure to inflation                  (7,949)              (28,808)
Balance at end of the year                  11,365                13,591
Schedule of aging analysis of trade receivables
         
       12.31.24     12.31.23 
Past due              140,706              70,673
Up to 3 months              221,661              74,351
Total trade receivables                362,367              145,024
Schedule of sensitivity analysis
     
 - 5% increase in the uncollectibility rate estimate       
       12.31.24 
 Allowance                   11,933
 Variation                        568
       

 

 
 - 5% decrease in the uncollectibility rate estimate       
       12.31.24 
 Allowance                   10,796
 Variation                     (569)