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Operating Context - Schedule of Distribution and Sale of Energy and Gas (Parenthetical) (Details) | 12 Months Ended
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Dec. 31, 2024 PowerPlant Customer MW
Cemig Geracaoe Transmissao S A [Member] |
IfrsStatementLineItems [Line Items] |
Number of power plants | 68
Installed generation capacity | MW | 5,517
Cemig Geracaoe Transmissao S A [Member] | Hydroelectric [member] |
IfrsStatementLineItems [Line Items] |
Number of power plants | 60
Cemig Geracaoe Transmissao S A [Member] | Wind power [member] |
IfrsStatementLineItems [Line Items] |
Number of power plants | 7
Cemig Geracaoe Transmissao S A [Member] | Solar [member] |
IfrsStatementLineItems [Line Items] |
Number of power plants | 1
Central Eolica Praias de Parajuru S A [Member] | Wind Turbines [Member] |
IfrsStatementLineItems [Line Items] |
Number of power plants | 19
Central Eolica Volta do Rio S A [Member] | Wind Turbines [Member] |
IfrsStatementLineItems [Line Items] |
Number of power plants | 28
Efficientia S A [Member] | Wind Turbines [Member] |
IfrsStatementLineItems [Line Items] |
Number Of customers | Customer | 14,000
Amazonia Energia Participacoes S A [Member] |
IfrsStatementLineItems [Line Items] |
Percentage of share | 74.50%
Remaining percentage of share | 25.50%
Percentage of share acquired | 9.77%
Alianca Norte Energia Participacoes S A [Member] |
IfrsStatementLineItems [Line Items] |
Percentage of share | 49.00%
Remaining percentage of share | 51.00%
Percentage of share acquired | 9.00%
Alianca Geracaode Energia S A [Member] | Minimum [Member] |
IfrsStatementLineItems [Line Items] |
Percentage of share | 45.00%
Alianca Geracaode Energia S A [Member] | Maximum [Member] |
IfrsStatementLineItems [Line Items] |
Percentage of share | 55.00%

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