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36 Related Party Transactions (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | R$ 46,784,664 |  |  |  |  |
Net operating revenues |  | 18,633,249 |  |  |  |  |
Operating costs and expenses |  | (13,347,822) |  |  |  |  |
Joint Ventures [member] | Integracao Maranhense Transmissora [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [1],[2] | 160 |  | R$ 161 |  |  |
Operating costs and expenses | [1],[2] | (2,029) |  | (1,938) |  | R$ (1,797) |
Joint Ventures [member] | Integracao Maranhense Transmissora [Member] | Dividends [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 3,806 |  | 4,306 |  |  |
Joint Ventures [member] | Caiua Transmissora De Energia [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [1],[2],[3],[4] | 261 |  | 256 |  |  |
Liabilities | [1],[2],[3],[4] | 1,401 |  | 1,512 |  |  |
Net operating revenues | [1],[2],[3],[4] | 3,114 |  | 2,792 |  | 4,250 |
Operating costs and expenses | [1],[2],[3],[4] | (16,267) |  | (14,233) |  | (14,869) |
Joint Ventures [member] | Caiua Transmissora De Energia [Member] | Dividends [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 4,443 |  | 4,443 |  |  |
Joint Ventures [member] | Voltalia Sao Miguel Do Gostoso - Mutual [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Net operating revenues |  |  |  |  |  | 294 |
Joint Ventures [member] | Voltalia Sao Miguel Do Gostoso - Mutual [Member] | Dividends [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 1,032 |  | 1,032 |  |  |
Joint Ventures [member] | Matrincha Transmissora De Energia [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities | [1],[2] | 959 |  | 829 |  |  |
Operating costs and expenses | [1],[2] | (11,259) |  | (10,137) |  | (9,514) |
Joint Ventures [member] | Matrincha Transmissora De Energia [Member] | Dividends [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 34,460 |  | 31,793 |  |  |
Joint Ventures [member] | Guaraciaba Transmissora De Energia [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities | [1],[2] | 436 |  | 383 |  |  |
Operating costs and expenses | [1],[2] | (5,348) |  | (4,853) |  | (4,475) |
Joint Ventures [member] | Guaraciaba Transmissora De Energia [Member] | Dividends [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 16,281 |  | 14,846 |  |  |
Joint Ventures [member] | Paranaiba Transmissora De Energia [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities | [1],[2] | 649 |  | 638 |  |  |
Operating costs and expenses | [1],[2] | (8,141) |  | (6,514) |  | (6,595) |
Joint Ventures [member] | Paranaiba Transmissora De Energia [Member] | Dividends [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities |  |  |  | 5,962 |  |  |
Joint Ventures [member] | Cantareira Transmissora de Energia [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities | [1],[2] | 468 |  | 467 |  |  |
Operating costs and expenses | [1],[2] | (5,912) |  | (5,403) |  | (1,618) |
Joint Ventures [member] | Mata De Santa Genebra Transmissao [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [1] | 4,034 |  | 2,035 |  |  |
Liabilities | [1] | 990 |  | 10 |  |  |
Net operating revenues | [1] | 17,636 |  | 16,449 |  | 6,600 |
Operating costs and expenses | [1] | (7,636) |  | (340) |  |  |
State Of Parana Investee [Member] | Sanepar [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [4],[5] | 223 |  | 294 |  |  |
Liabilities | [4],[5] | 582 |  | 311 |  |  |
Net operating revenues | [4],[5] | 4,956 |  | 4,710 |  | 4,200 |
Operating costs and expenses | [4],[5] | (6,598) |  | (5,852) |  | (5,227) |
State Of Parana Investee [Member] | Use Of Water Withdrawn From Plants Reservoirs [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Net operating revenues |  | 620 |  | 480 |  |  |
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Debentures Wind Farms [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities | [6] | 239,249 |  | 253,877 |  |  |
Operating costs and expenses | [6] | (25,891) |  | (28,240) |  | (30,316) |
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Debentures Compagas [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities |  | 5,890 |  | 11,783 |  |  |
Operating costs and expenses |  | (1,681) |  | (1,194) |  | (2,625) |
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Financing [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities |  | 2,314,166 |  | 2,231,409 |  |  |
Operating costs and expenses |  | (151,850) |  | (175,461) |  | (131,379) |
Entities With Significant Influence [Member] | BNDES And BNDESPAR [Member] | Dividends Payable [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities | [7] | 568,315 |  | 130,204 |  |  |
Controlling Shareholder [Member] | State of Parana [Member] | Meteorological System of Parana - Simepar [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [4],[8] | 2 |  | 10 |  |  |
Liabilities | [4],[8] | 855 |  | 705 |  |  |
Net operating revenues |  | 48 | [4],[8] | 58 | [4],[8] | 54 |
Operating costs and expenses |  | (8,573) | [4],[8] | (7,087) | [4],[8] | (1,559) | [9]
Controlling Shareholder [Member] | State of Parana [Member] | Telecommunication Services [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [4] | 13,686 |  | 16,278 |  |  |
Net operating revenues | [4] | 43,248 |  | 43,011 |  | 41,375 |
Controlling Shareholder [Member] | State of Parana [Member] | Morar Bem Parana Program [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [10] | 1,057 |  |  |  |  |
Controlling Shareholder [Member] | State of Parana [Member] | Tarifa Rural Noturna Program [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [10] | 8,168 |  | 7,639 |  |  |
Controlling Shareholder [Member] | State of Parana [Member] | Luz Fraterna Program [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [10] | 6,682 |  | 7,478 |  |  |
Controlling Shareholder [Member] | State of Parana [Member] | CRC Transfer [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 1,392,624 |  | 1,350,685 |  |  |
Net operating revenues |  | 341,964 |  | 184,229 |  | 188,797 |
Controlling Shareholder [Member] | State of Parana [Member] | Dividends Payable [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities |  | 749,338 |  | 190,664 |  |  |
Controlling Shareholder [Member] | State of Parana [Member] | Employees Transferred [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [8] | 87 |  | 33 |  |  |
Associates [Member] | Dona Francisca Energetica S.A [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [1] | 13 |  | 40 |  |  |
Liabilities | [1] | 1,436 |  | 1,436 |  |  |
Net operating revenues | [1] | 162 |  | 145 |  |  |
Operating costs and expenses | [1] | (17,078) |  | (16,905) |  | (16,903) |
Associates [Member] | Foz do Chopim Energetica Ltda. [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 216 |  | 209 |  |  |
Net operating revenues |  | 2,675 |  | 2,538 |  | 2,668 |
Associates [Member] | Sercomtel S.A. Telecomunicacoes [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  |  |  | 4,436 |  |  |
Net operating revenues |  | 8,299 |  | 8,354 |  | 8,051 |
Operating costs and expenses |  | 4 |  | (21) |  | (4) |
Key Management Staff [Member] | Fees And Social Security Charges [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Operating costs and expenses |  | 21,935 |  | (25,860) |  | (27,368) |
Key Management Staff [Member] | Pension And Healthcare Plans [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Operating costs and expenses |  | (1,116) |  | (1,560) |  | (1,725) |
Other Related Parties [Member] | Pension And Healthcare Plans [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities |  | 1,493,614 |  | 1,194,936 |  |  |
Other Related Parties [Member] | Administrative Property Rental [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Liabilities |  | 1,836 |  | 14,662 |  |  |
Operating costs and expenses |  | (1,285) |  | (2,520) |  | (15,396) |
Other Related Parties [Member] | Fundacao Copel [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 40 |  | 9 |  |  |
Net operating revenues |  | 315 |  | 285 |  | 299 |
Other Related Parties [Member] | Lactec |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets | [4],[11] | 5 |  | 4 |  |  |
Liabilities | [4],[11] | 2,747 |  | 1,507 |  |  |
Net operating revenues | [4],[11] | 771 |  | 746 |  |  |
Operating costs and expenses | [4],[11] | (2,702) |  | (2,787) |  | (4,026) |
Other Related Parties [Member] | Tecpa [member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 11 | [4] | 9 |  |  |
Net operating revenues |  | 862 | [4] | 81 |  | 68 |
Other Related Parties [Member] | Celepa [member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Assets |  | 4 | [4],[12] | 15 |  |  |
Liabilities | [4],[12] | 2 |  | 21 |  |  |
Net operating revenues |  | 51 | [4],[12] | 112 |  | R$ 85 |
Operating costs and expenses | [4],[12] | R$ (50) |  | R$ (5) |  |  |
[1] | Charges for use of the transmission system due by Copel GeT, UEG Araucaria and wind farms.
[2] | Copel DIS maintains a Contract for the Use of Transmission System (Cust) with ONS and power transmission concession operators whose subject matter is the contracting of Transmission System Use Amount (Must). Contracting is permanent and is regulated by ANEEL Normative Resolution 666/2015. Amounts are defined for four subsequent years, with annual reviews.
[3] | Operation and maintenance services agreement provided by Copel GeT, maturing on May 9, 2021. Transmission System Connection Agreement - CCT executed by Copel DIS, expiring by the end of the concession agreement of the distribution or transmission company, whichever takes place first.
[4] | Revenue of Copel TEL from telecommunications services and lease of equipment and infrastructure. The balances presented are net of expected credit losses.
[5] | Basic sanitation provided by Sanepar.
[6] | BNDES and BNDESPAR acquired all the debentures issued by the subsidiaries Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV and Ventos de Santo Uriel.
[7] | BNDES is the parent company of BNDES Participacoes S.A. - BNDESPAR, which owns Copel shares (Note 30.1). On December 22, 2018, the shareholder agreement between the State of Parana and BNDESPAR, signed on December 22, 1998, was ended.
[8] | Reimbursement of wages and social charges for employees transferred to the Parana State Government. Balances presented are net of expected credit loss.
[9] | The Sistema Meteorologico do Parana - Simepar is a supplementary unit of the Independent Social Service Parana Technology, linked to the State Department of Science, Technology and Higher Education. Simepar has contracts with Copel for services of weather forecast, meteorological reports, ampacity analysis, mapping and analyses of winds and atmospheric discharges.
[10] | The Luz Fraterna Program created under Law 491/2013 and 17,639/2013 establishes the payment of electricity consumption to benefit low-income families, residing in the State of Parana, whose properties - consumer units - are used exclusively for residential purposes, whether in urban or rural areas, and fulfill the requirements established in articles 3 and 4 of this law.
[11] | The Institute of Technology for Development (Lactec) is a Public Interest Civil Society Organization (OSCIP), in which Copel is an associate. Lactec has service and R&D contracts with Copel GeT, UEGA and Copel DIS, which are subject to prior or later control and approval by ANEEL. Copel COM provides services and sells energy to the institute.
[12] | Service agreements entered into with the Parana Information Technology Company (Celepar), a mixed capital company that is part of the indirect administration of the State Government

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