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CONCESSION FINANCIAL AND SECTOR ASSETS AND LIABILITIES (Details 2) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 BRL (R$) MW
IfrsStatementLineItems [Line Items] |
Installed capacity (MW) | MW | 3,601
Net balance of assets based on historical cost | R$ 219
Net balance of assets based on fair value | 644
Financial Update | 44
Net balance of assets | R$ 691
Usina hidreletrica tress marias [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 396.00
Net balance of assets based on historical cost | R$ 71
Net balance of assets based on fair value | 167
Financial Update | 12
Net balance of assets | R$ 179
Usina hidreletrica salto grande [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 102.00
Net balance of assets based on historical cost | R$ 12
Net balance of assets based on fair value | 86
Financial Update | 6
Net balance of assets | R$ 92
Usina hidreletrica itutinga [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 52.00
Net balance of assets based on historical cost | R$ 4
Net balance of assets based on fair value | 10
Financial Update | 1
Net balance of assets | R$ 11
Usina hidreletrica camargos [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 46.00
Net balance of assets based on historical cost | R$ 7
Net balance of assets based on fair value | 20
Financial Update | 1
Net balance of assets | R$ 21
Cemig PCH piau [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 18.01
Net balance of assets based on historical cost | R$ 2
Net balance of assets based on fair value | 4
Net balance of assets | R$ 5
Cemig PCH gafanhoto [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 14.00
Net balance of assets based on historical cost | R$ 1
Net balance of assets based on fair value | 5
Net balance of assets | R$ 6
Cemig PCH peti [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 9.40
Net balance of assets based on historical cost | R$ 1
Net balance of assets based on fair value | 6
Net balance of assets | R$ 6
Cemig PCH dona rita [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | Sep. 2013
Installed capacity (MW) | MW | 2.41
Net balance of assets based on historical cost | R$ 1
Net balance of assets based on fair value | 2
Net balance of assets | R$ 2
Cemig PCH tronqueiras [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 8.50
Net balance of assets based on historical cost | R$ 2
Net balance of assets based on fair value | 9
Financial Update | 1
Net balance of assets | R$ 9
Cemig PCH joasal [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 8.40
Net balance of assets based on historical cost | R$ 2
Net balance of assets based on fair value | 6
Net balance of assets | R$ 7
Cemig PCH martins [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 7.70
Net balance of assets based on historical cost | R$ 2
Net balance of assets based on fair value | 4
Net balance of assets | R$ 5
Cemig PCH cajuru [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 7.20
Net balance of assets based on historical cost | R$ 4
Net balance of assets based on fair value | 19
Financial Update | 1
Net balance of assets | R$ 20
Cemig PCH paciencia [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 4.08
Net balance of assets based on historical cost | R$ 1
Net balance of assets based on fair value | 4
Net balance of assets | R$ 4
Cemig PCH marmelos [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | July 2015
Installed capacity (MW) | MW | 4.00
Net balance of assets based on historical cost | R$ 1
Net balance of assets based on fair value | 2
Net balance of assets | R$ 3
Usina hidreletrica volta grande [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | Feb. 2017
Installed capacity (MW) | MW | 380.00
Usina hidreletrica miranda [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | Dec. 2016
Installed capacity (MW) | MW | 408.00
Net balance of assets based on historical cost | R$ 35
Net balance of assets based on fair value | 91
Financial Update | 7
Net balance of assets | R$ 97
Usina hidreletrica jaguara [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | Aug. 2013
Installed capacity (MW) | MW | 424.00
Net balance of assets based on historical cost | R$ 46
Net balance of assets based on fair value | 138
Financial Update | 10
Net balance of assets | R$ 148
Usina hidreletrica sao simao [member] |
IfrsStatementLineItems [Line Items] |
Concession expiration date | Jan. 2015
Installed capacity (MW) | MW | 1,710
Net balance of assets based on historical cost | R$ 27
Net balance of assets based on fair value | 71
Financial Update | 5
Net balance of assets | R$ 77

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