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v3.23.2

Operating Costs and Expense (Details 3) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | R$ 800,743 | R$ 706,599 | R$ 558,041
Maintenance Of Electrical System [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | 338,283 | 319,162 | 206,688
Maintenance Of Facilities [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | 97,216 | 103,726 | 97,889
Communication Processing And Transmission Of Data [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | 91,713 | 64,772 | 42,244
Consumer Service [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | 83,203 | 66,733 | 56,583
Meter Reading And Bill Delivery [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | 53,660 | 52,831 | 48,895
Consulting And Audit [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | 53,344 | 38,832 | 41,043
Other Services [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Third-party services expense | R$ 83,324 | R$ 60,543 | R$ 64,699

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