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Net Operating Revenue (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
IfrsStatementLineItems [Line Items]
Regulatory charges	R$ 2,659,092	R$ 2,670,262	R$ 1,737,716
National Electric Energy Agency [Member]
IfrsStatementLineItems [Line Items]
Regulatory charges	R$ 2,385,578	2,505,319	1,641,499
National Electric Energy Agency [Member] | Quotas [Member]
IfrsStatementLineItems [Line Items]
Resolutions	Quotas
Regulatory charges	R$ 2,201,372	2,321,875	1,534,490
National Electric Energy Agency [Member] | Covid Account [Member]
IfrsStatementLineItems [Line Items]
Resolutions	Covid Account
Regulatory charges	R$ 183,444	183,444	107,009
National Electric Energy Agency [Member] | Water Shortage [Member]
IfrsStatementLineItems [Line Items]
Resolutions	Water shortage
Regulatory charges	R$ 1,725
National Electric Energy Agency [Member] | Preliminary Injunctions [Member]
IfrsStatementLineItems [Line Items]
Resolutions	Preliminary injunctions
Regulatory charges	R$ 963
National Electric Energy Agency One [Member]
IfrsStatementLineItems [Line Items]
Regulatory charges	R$ 273,514	164,943	96,217
National Electric Energy Agency One [Member] | Covid Account [Member]
IfrsStatementLineItems [Line Items]
Resolutions	Covid Account
Regulatory charges	R$ 164,943	164,943	96,217
National Electric Energy Agency One [Member] | Water Shortage [Member]
IfrsStatementLineItems [Line Items]
Resolutions	Water shortage
Regulatory charges	R$ 43,453
National Electric Energy Agency One [Member] | Distributed Generation [Member]
IfrsStatementLineItems [Line Items]
Resolutions	Distributed Generation
Regulatory charges	R$ 65,118

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The description of the identity of the rate regulator(s). A rate regulator is an authorised body that is empowered by statute or regulation to establish the rate or a range of rates that bind an entity. The rate regulator may be a third-party body or a related party of the entity, including the entity’s own governing board, if that body is required by statute or regulation to set rates both in the interest of the customers and to ensure the overall financial viability of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 14
-IssueDate 2023-01-01
-Paragraph 30
-Subparagraph b
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-URIDate 2023-03-23

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- Definition

The amount of charges related to transmission of energy.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

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