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1 Operations (Details Narrative) R$ in Thousands |  |  |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 02, 2021 BRL (R$) Plant | Dec. 23, 2020 BRL (R$) | May 18, 2020 | May 01, 2020 | Apr. 08, 2020 BRL (R$) | Dec. 31, 2020 BRL (R$) | Dec. 31, 2019 BRL (R$) | Dec. 10, 2020 BRL (R$) | Jun. 25, 2020 BRL (R$) | May 13, 2020 BRL (R$) | Dec. 31, 2018 BRL (R$)
Disclosure of joint ventures [line items] |  |  |  |  |  |  |  |  |  |  |
Description of electric energy demand |  |  |  |  |  | The industrial and commercial consumption classes, which registered a decrease of 12.6% and 11.8% in the year, respectively, in relation to the previous year. |  |  |  |  |
Percentage of growth in residential class |  |  |  |  |  | 5.50% |  |  |  |  |
Sector financial liabilities |  |  |  |  | R$ 84,881 |  |  |  |  | R$ 8,666 |
Total amount requised of provisions |  |  |  |  |  |  |  |  | R$ 869,516 |  |
Advance amount |  |  |  |  |  |  |  |  | R$ 536,359 |  |
Estimated expected credit losses |  |  |  |  |  | R$ 35,800 |  |  |  |  |
Percentage of drop in consumation capative energy market |  |  |  |  |  | 3.10% |  |  |  |  |
Percentage of over-contracting electricity |  |  |  |  |  | 105.50% |  |  |  |  |
Deferred tax assets |  |  |  |  |  | R$ 1,191,104 | R$ 1,011,866 |  |  |  | R$ 1,007,061
Net working capital |  |  |  |  |  | 1,753,039 | 2,563,575 |  |  |  |
Cash and cash equivalents |  |  |  |  |  | R$ 3,222,768 | R$ 2,941,727 |  |  |  |
Amount received for sale of assets |  | R$ 1,536 |  |  |  |  |  |  |  |  |
Amount of renegotiation of hydrological risk | R$ 1,366,343 |  |  |  |  |  |  |  |  |  |
Description consumers with consumption |  |  | Decree 10,350 was enacted, which provided for the creation of the Covid Account, intended for the electric sector to deal with the state of public calamity recognized by Legislative Decree 6, of March 20, 2020, and which regulated the Provisional Measure 950 valid until 05.08.2020. |  | for low-income consumers with consumption of up to 220 kWh/month, for a period of three months | for low-income consumers with consumption of up to 220 kWh/month, for a period of three months |  |  |  |  |
Description provisional Measure |  |  |  |  | valid until 05.08.2020, Provisional Measure 950 was enacted by the Federal Government |  |  |  |  |  |
Number of eligible plants | Plant | 15 |  |  |  |  |  |  |  |  |  |
Description commercial operation began |  |  |  | commercial operation began with 3 MWp (megawatt-peak, photovoltaic power unit) out of a total of 5.36 MWp of installed power, enough to already serve the energy consumption of approximately 2,500 homes. |  |  |  |  |  |  |
Domino Holdings Ltda [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |  |  |  |  |  |  |
Amount transferred to other receivables |  |  |  |  |  |  |  | R$ 153 |  |  |
Commercial and industrial classes [member] | Bottom Of Range [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |  |  |  |  |  |  |
Percentage of reduced consumption |  |  |  |  |  | 11.80% |  |  |  |  |
Commercial and industrial classes [member] | Top Of Range [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |  |  |  |  |  |  |
Percentage of reduced consumption |  |  |  |  |  | 12.60% |  |  |  |  |

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