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Schedule of sales of electricity (Details)
MWh in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2021
ARS ($)
MWh
Dec. 31, 2020
ARS ($)
MWh
Dec. 31, 2019
ARS ($)
MWh
IfrsStatementLineItems [Line Items]      
Total - Revenue $ 113,500 $ 137,782 $ 184,739
Small demand tariff member      
IfrsStatementLineItems [Line Items]      
Sale of energy | MWh | MWh 12,373 11,600 10,768
Total - Revenue $ 66,852 $ 86,541 $ 109,511
Medium demand segment member      
IfrsStatementLineItems [Line Items]      
Sale of energy | MWh | MWh 1,447 1,341 1,549
Total - Revenue $ 12,150 $ 15,909 $ 24,104
Large demand segment member      
IfrsStatementLineItems [Line Items]      
Sale of energy | MWh | MWh 3,492 3,210 3,503
Total - Revenue $ 28,531 $ 29,921 $ 48,203
Other demand segment member      
IfrsStatementLineItems [Line Items]      
Sale of energy | MWh | MWh 4,398 4,028 4,154
Total - Revenue $ 5,192 $ 4,695 $ 2,159
Subtotal sales of electricity member      
IfrsStatementLineItems [Line Items]      
Sale of energy | MWh | MWh 21,710 20,179 19,974
Total - Revenue $ 112,725 $ 137,066 $ 183,977
Right of use of poles member      
IfrsStatementLineItems [Line Items]      
Total - Revenue 702 635 582
Connection and reconnection charges member      
IfrsStatementLineItems [Line Items]      
Total - Revenue 73 81 180
Subtotal other eervices member      
IfrsStatementLineItems [Line Items]      
Total - Revenue $ 775 $ 716 $ 762
Energy purchase member      
IfrsStatementLineItems [Line Items]      
Sale of energy | MWh | MWh 26,373 25,124 24,960
Total - Revenue $ (69,800) $ (87,408) $ (117,160)