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Schedule of summary of property plant and equipment depreciation rate (Details)
 12 Months Ended
Dec. 31, 2021
Hydroelectric Generation [Member]  
IfrsStatementLineItems [Line Items]  
Average annual depreciation rate 3.14%
Wind Power Generation [Member]  
IfrsStatementLineItems [Line Items]  
Average annual depreciation rate 5.20%
Administration [Member]  
IfrsStatementLineItems [Line Items]  
Average annual depreciation rate 6.35%
Reservoirs Dams And Water Courses [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 2.00%
Computer software [member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 20.00%
Buildings Machine Room [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 2.00%
Vehicles [member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 14.29%
Buildings Other [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 3.33%
I T Equipment In General [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 16.67%
Generator [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 3.33%
General equipment [member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 6.25%
Water Turbine [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 2.50%
Pressure Tunnel [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 3.13%
Command Station Panel And Cubicle [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 3.57%
Floodgate [Member]  
IfrsStatementLineItems [Line Items]  
Property plant and equipment depreciation rate 3.33%