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Other operating revenues (Details) - Products [Member] - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
IfrsStatementLineItems [Line Items] |  |  |  |
Charged service |  | R$ 17 | R$ 11 | R$ 17
Services rendered |  | 53 | 139 | 183
Subsidies | [1] | 1,592 | 1,395 | 1,266
Rental and leasing |  | 211 | 164 | 189
Reimbursement for decontracted supply | [2] | 27 |  | 65
Other |  | 35 |  | 1
Total |  | R$ 1,935 | R$ 1,709 | R$ 1,721
[1] | Includes the revenue recognized for the tariff subsidies applied to users of the distribution system, in the amount of R$986 in 2021 (R$1,035 in 2020). Includes the subsidies for sources that are subject to incentive, rural, irrigators, public services and the generation sources that are subject to the incentive; and also includes the tariff flag revenue in the amount of R$108 in 2021, recognized because of the creditor position assumed by the Company in CCRBT; and revenue recognized arising from subsidies, in the amount of R$205, relating to the Program to Encourage Voluntary Reduction of Energy Consumption.
[2] | Reimbursement for suspension of energy supply –Renova.

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