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31 Net Operating Revenue (Details 5) - National Electric Energy Agency [Member] - Energy Development Account CDE Energia [Member] - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of net operating revenue [line items] |  |  |
Regulatory charges | R$ 1,654,157 | R$ 1,840,283 | R$ 1,415,738
CDE USO [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Regulatory charges | R$ 1,266,152 | R$ 1,040,045 | R$ 697,584
CDE USO [Member] | Resolution No. 2,510/2018 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions | Resolution No. 2,510/2018 |  |
Period | January to June |  |
Regulatory charges | R$ 1,269,498 |  |
CDE USO [Member] | Preliminary Injunctions [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions | (-) Preliminary injunctions | (-) Preliminary injunctions | (-) Preliminary injunctions
Period | January to June | January to December | January to December
Regulatory charges | R$ (3,346) | R$ (2) | R$ (28,502)
CDE USO [Member] | Resolution No. 2,368/2018 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  | Resolution No. 2,368/2018 |
Period |  | January to August |
Regulatory charges |  | R$ 594,972 |
CDE USO [Member] | Resolution No. 2,446/2018 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  | Resolution No. 2,446/2018 |
Period |  | September to December |
Regulatory charges |  | R$ 445,075 |
CDE USO [Member] | Resolution No. 2,202/2017 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  |  | Resolution No. 2,202/2017
Period |  |  | January
Regulatory charges |  |  | R$ 53,329
CDE USO [Member] | Resolution No. 2,204/2017 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  |  | Resolution No. 2,204/2017
Period |  |  | February to December
Regulatory charges |  |  | R$ 672,756
CONTA ACR [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Regulatory charges | R$ 348,177 | R$ 557,981 | R$ 489,248
CONTA ACR [Member] | Resolution No. 2,231/2017 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions | Resolution No. 2,231/2017 | Resolution No. 2,231/2017 | Resolution No. 2,231/2017
Period | January to February | January to December | April to December
Regulatory charges | R$ 98,725 | R$ 557,981 | R$ 341,161
CONTA ACR [Member] | Resolution No. 2,521/2019 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions | Resolution No. 2,521/2019 |  |
Period | March to August |  |
Regulatory charges | R$ 296,174 |  |
CONTA ACR [Member] | Return - Order No. 2,755 / 2019 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions | Return - Order No. 2,755 / 2019 |  |
Regulatory charges | R$ (46,722) |  |
CONTA ACR [Member] | Resolution No. 2,004/2015 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  |  | Resolution No. 2,004/2015
Period |  |  | January to March
Regulatory charges |  |  | R$ 148,087
CDE ENERGIA [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Regulatory charges | R$ 39,828 | R$ 242,257 | R$ 228,906
CDE ENERGIA [Member] | Resolution No. 2,510/2018 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions | Resolution No. 2,510/2018 |  |
Period | January to March |  |
Regulatory charges | R$ 41,431 |  |
CDE ENERGIA [Member] | Preliminary Injunctions [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions | (-) Preliminary injunctions | (-) Preliminary injunctions | (-) Preliminary injunctions
Period | January to March | January to December | January to December
Regulatory charges | R$ (1,603) | R$ (3,442) | R$ (6,799)
CDE ENERGIA [Member] | Resolution No. 2,202/2017 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  | Resolution No. 2,202/2017 |
Period |  | January to May |
Regulatory charges |  | R$ 100,692 |
CDE ENERGIA [Member] | Resolution No. 2,358/2017 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  | Resolution No. 2,358/2017 |
Period |  | June to December |
Regulatory charges |  | R$ 145,007 |
CDE ENERGIA [Member] | Resolution No. 2,204/2017 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  |  | Resolution No. 2,204/2017
Period |  |  | Junel to December
Regulatory charges |  |  | R$ 140,968
CDE ENERGIA [Member] | Resolution No. 2,077/2016 [Member] |  |  |
Disclosure of net operating revenue [line items] |  |  |
Resolutions |  |  | Resolution No. 2,077/2016
Period |  |  | January to May
Regulatory charges |  |  | R$ 94,736

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