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11 Contract Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Contract assets [abstract] |
Schedule of summary of contract assets |
|  | Restated | Restated
| 12.31.2020 | 12.31.2019 | 01.01.2019
Power distribution service concession (11.1) | 1,114,961 | 844,284 | 640,500
Piped gas distribution service concession (11.2) | 27,254 | 26,734 | 25,718
Power transmission concession (11.3) | 4,350,582 | 3,919,635 | 3,520,838
| 5,492,797 | 4,790,653 | 4,187,056
Current | 285,682 | 161,740 | 134,016
Noncurrent | 5,207,115 | 4,628,913 | 4,053,040
Schedule of power distribution service concession contract |
11.1 | Power distribution service concession contract
| Assets | Special liabilities | Total
Balance as of January 1, 2019 | 664,755 | (24,255) | 640,500
Acquisitions | 1,021,644 | - | 1,021,644
Customers contributions | - | (104,067) | (104,067)
Provision for legal claims added to the cost of the works | 1,823 | - | 1,823
Transfers to intangible assets (Note 18.1) | (771,844) | 93,164 | (678,680)
Transfers to accounts receivable - concessions (Note 10.1) | (33,075) | 4,088 | (28,987)
Loss on disposal | (7,949) | - | (7,949)
Balance as of December 31, 2019 | 875,354 | (31,070) | 844,284
Acquisitions | 1,391,267 | - | 1,391,267
Customers contributions | - | (112,689) | (112,689)
Provision for legal claims added to the cost of the works | 1,522 | - | 1,522
Transfers to intangible assets (Note 18.1) | (1,016,482) | 105,116 | (911,366)
Transfers to accounts receivable - concessions (Note 10.1) | (94,978) | 8,824 | (86,154)
Loss on disposal | (11,903) | - | (11,903)
Balance as of December 31, 2020 | 1,144,780 | (29,819) | 1,114,961
Schedule of piped gas distribution service concession contract |
11.2 | Piped gas distribution service concession contract
Balance as of January 1, 2019 | 25,718
Acquisitions | 17,590
Transfers from/to accounts receivable - concessions (Note 10.2) | (16,574)
Balance as of December 31, 2019 | 26,734
Acquisitions | 15,187
Transfers to intangible assets (Note 18.3) | (7,277)
Transfers to accounts receivable - concessions (Note 10.2) | (7,390)
Balance as of December 31, 2020 | 27,254
Schedule of transmission service concession contract |
11.3 | Transmission service concession contract
| Concession assets | RBSE assets | Total Restated
Balance as of January 1, 2019 | 2,166,757 | 1,354,081 | 3,520,838
Business combinations efects | 117,942 | - | 117,942
Realization of gains/losses in business combinations | 282 | - | 282
Transfers to electricity grid use charges - customers | (176,724) | (214,336) | (391,060)
Transfers to property, plant and equipment | (3,353) | - | (3,353)
Transfer of judicial deposits and litigation | (313) | - | (313)
Remuneration | 280,630 | 177,961 | 458,591
Construction revenue | 175,219 | - | 175,219
Construction income | 2,892 | - | 2,892
Efficiency gain (11.3.1) | 38,597 | - | 38,597
Balance as of December 31, 2019 | 2,601,929 | 1,317,706 | 3,919,635
Realization of gains/losses in business combinations | 722 | - | 722
Transfers to electricity grid use charges - customers | (312,120) | (266,027) | (578,147)
Transfers to property, plant and equipment | (613) | - | (613)
Transfers from litigations | (576) | - | (576)
Remuneration | 489,438 | 291,669 | 781,107
Construction revenue | 255,578 | - | 255,578
Construction income | 4,217 | - | 4,217
Loss from inefficiency (11.3.1) | (7,654) | - | (7,654)
Write-offs | (23,687) | - | (23,687)
Balance as of December 31, 2020 | 3,007,234 | 1,343,348 | 4,350,582
Schedule of assumptions adopted for the calculation of contract assets |
11.3.2 | Assumptions adopted for the calculation of contract assets
| Concession assets | RBSE assets
Construction income | 1.65% | N/A
Operating and maintenance margin | 1.65% | N/A
Remuneration rate (a) | 9,58% p.y. | 9,54% p.y.
Contract correction index | IPCA (b) | IPCA
Annual RAP, according to Homologatory Resolution | 415,455 | 279,406
Construction cost incurred up to 12.31.2020 of works in progress |  |
Contract 006/2016 - TL 525 kV Curitiba Leste - Blumenau | 238,233 | N/A
(a)Average rate of contracts
(b) Contract 075/2001 - LT 230 kV Bateias - Jaguariaíva, from Copel GET, and contract 002/2005 - LT 525 kV Ivaiporã - Londrina, from Uirapuru, are adjusted by the IGPM.

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