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1 Operations (Details 1) | 12 Months Ended
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Dec. 31, 2020
Solar Parana GD Participcoes S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Solar Paraná GD Participções S.A. |
Headquarters | Curitiba/PR |
Main activity | Interests in companies |
Interest | 49.00% |
Investor | Copel |
Voltalia Sao Miguel do Gostoso I Participacoes S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Voltalia São Miguel do Gostoso I Participações S.A. |
Headquarters | São Paulo/SP |
Main activity | Interests in companies |
Interest | 49.00% |
Investor | Copel |
Parana Gas Exploracao e Producao S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Paraná Gás Exploração e Produção S.A. | [1]
Headquarters | Curitiba/PR | [1]
Main activity | Extraction of oil and natural gas | [1]
Interest | 30.00% | [1]
Investor | Copel | [1]
Caiua Transmissora de Energia S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Caiuá Transmissora de Energia S.A. |
Headquarters | Rio de Janeiro/RJ |
Main activity | Transmission of electricity |
Interest | 49.00% |
Investor | Copel GeT |
Integracao Maranhense Transmissora de Energia S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Integração Maranhense Transmissora de Energia S.A. |
Headquarters | Rio de Janeiro/RJ |
Main activity | Transmission of electricity |
Interest | 49.00% |
Investor | Copel GeT |
Matrincha Transmissora de Energia (TP NORTE) S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Matrinchã Transmissora de Energia (TP NORTE) S.A. |
Headquarters | Rio de Janeiro/RJ |
Main activity | Transmission of electricity |
Interest | 49.00% |
Investor | Copel GeT |
Guaraciaba Transmissora de Energia (TP SUL) S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Guaraciaba Transmissora de Energia (TP SUL) S.A. |
Headquarters | Rio de Janeiro/RJ |
Main activity | Transmission of electricity |
Interest | 49.00% |
Investor | Copel GeT |
Paranaiba Transmissora de Energia S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Paranaíba Transmissora de Energia S.A. |
Headquarters | Rio de Janeiro/RJ |
Main activity | Transmission of electricity |
Interest | 24.50% |
Investor | Copel GeT |
Mata de Santa Genebra Transmissao S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Mata de Santa Genebra Transmissão S.A. |
Headquarters | Jundiaí/SP |
Main activity | Transmission of electricity | [2]
Interest | 50.10% | [2]
Investor | Copel GeT | [2]
Cantareira Transmissora de Energia S.A. [member] |  |
Disclosure of joint ventures [line items] |  |
Joint ventures | Cantareira Transmissora de Energia S.A. |
Headquarters | Rio de Janeiro/RJ |
Main activity | Transmission of electricity |
Interest | 49.00% |
Investor | Copel GeT |
[1] | Project with halted activities due to a Public Civil Action pending judgment by Federal Court. An arbitration proceeding will be started to decide about relief ofcontractual obligations with no burden for bidders, with consequent return of signing up bonus, refund of incurred costs with collateral and relief of collateral provided.
[2] | On November 11, 2020, the last asset of the project entered into commercial operation, so that the transmission line is 100% operational.

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