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Contract assets (Details 3) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
IfrsStatementLineItems [Line Items] |  |
Contract assets, beginning | R$ 7,672,679 |
Contract assets, ending | 7,605,061 | R$ 7,672,679
Transmission Service Concession Contract [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Contract assets, beginning | 5,310,476 | 5,060,038
Realization of gains/losses in business combinations | 722 | 721
Transfers to electricity grid use charges - customers | (718,826) | (603,317)
Transfers to property, plant and equipment | (4,086) | (3,822)
Transfers from litigations | (458) | (1,558)
Remuneration | 716,030 | 711,648
Construction revenue | 85,181 | 89,166
Construction income | 1,410 | 1,458
Loss from inefficiency | 12,654 | 56,142
Contract assets, ending | 5,403,103 | 5,310,476
Concession Assets [Member] | Transmission Service Concession Contract [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Contract assets, beginning | 3,894,276 | 3,632,386
Realization of gains/losses in business combinations | 722 | 721
Transfers to electricity grid use charges - customers | (423,851) | (389,939)
Transfers to property, plant and equipment | (4,086) | (3,822)
Transfers from litigations | (458) | (1,558)
Remuneration | 521,308 | 509,722
Construction revenue | 85,181 | 89,166
Construction income | 1,410 | 1,458
Loss from inefficiency | 12,654 | 56,142
Contract assets, ending | 4,087,156 | 3,894,276
R B S E Assets [Member] | Transmission Service Concession Contract [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Contract assets, beginning | 1,416,200 | 1,427,652
Realization of gains/losses in business combinations |  |
Transfers to electricity grid use charges - customers | (294,975) | (213,378)
Transfers to property, plant and equipment |  |
Transfers from litigations |  |
Remuneration | 194,722 | 201,926
Construction revenue |  |
Construction income |  |
Loss from inefficiency |  |
Contract assets, ending | R$ 1,315,947 | R$ 1,416,200

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