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Generated and operated energy termal units remuneration (Details)
 12 Months Ended
Dec. 31, 2021
Minimum Remuneration To Thermal Power Generator 3 [Member]  
IfrsStatementLineItems [Line Items]  
Remuniration Generated energy
SRRYME No. 1/19 (US$ / MW-month) Between 4 and 7
SE No. 31/20 ($ / MW-month) Between 240 and 420
SE No. 440/21 ($ / MW-month) Between 310 and 542
Minimum Remuneration To Thermal Power Generator 1 [Member]  
IfrsStatementLineItems [Line Items]  
Remuniration Operated energy
SRRYME No. 1/19 (US$ / MW-month) 1.4
SE No. 31/20 ($ / MW-month) 84
SE No. 440/21 ($ / MW-month) 108