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Intangible assets (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Schedule of intangible assets | Schedule of intangible assets
| 12.31.2021 | 12.31.2020
Concession agreement - distribution of electricity (19.1) | 6,596,184 | 6,203,387
Generation concession agreements/ authorization (19.2) | 2,473,858 | 553,840
Concession agreement - piped gas distribution (19.3) | 96,145 | 132,366
Others (19.4) | 49,373 | 39,863
| 9,215,560 | 6,929,456
Schedule of changes in intangible assets | Schedule of changes in intangible assets
19.1 | Power distribution service concession
| Intangible asset in service | Special liabilities in service | Total
Balance as of January 1, 2020 | 8,487,265 | (2,783,579) | 5,703,686
Transfers from accounts receivable - concessions (Note 10.1) | 99 | - | 99
Transfers from contract assets (Note 11.1) | 1,016,482 | (105,116) | 911,366
Transfers to other receivables | (1,372) | - | (1,372)
Amortization of quotas - concession (a) | (485,677) | 138,596 | (347,081)
Amortization of quotas - PIS/Pasep and Cofins credits | (10,655) | - | (10,655)
Loss on disposal | (52,656) | - | (52,656)
Balance as of December 31, 2020 | 8,953,486 | (2,750,099) | 6,203,387
Transfers from accounts receivable - concessions (Note 10.1) | - | (8,385) | (8,385)
Transfers from contract assets (Note 11.1) | 943,905 | (122,346) | 821,559
Transfers to other receivables | (3,563) | - | (3,563)
Quotas amortization - concession (a) | (522,525) | 146,697 | (375,828)
Quotas amortization - PIS/Pasep and Cofins credits | (10,363) | - | (10,363)
Loss on disposal | (30,623) | - | (30,623)
Balance as of December 31, 2021 | 9,330,317 | (2,734,133) | 6,596,184
(a) Amortization during the concession period after the transfer to intangible assets in service of useful life of the assets, whichever the lower.
Schedule of generation concession agreements | Schedule of generation concession agreements
19.2 | Generation concession agreements
|  | Concession contract (a) | Concession and authorization |
| in service | in progress | rights/ goodwill | Total
Balance as of January 1, 2020 | 209,467 | - | 373,204 | 582,671
ANEEL grant - use of public property | - | 3,682 | - | 3,682
Amortization of quotas - concession and authorization (b) | (17,527) | - | (14,986) | (32,513)
Capitalizations for intangible in service | 3,682 | (3,682) | - |
Balance as of December 31, 2020 | 195,622 | - | 358,218 | 553,840
Effect of acquisition of control of Vilas Complex (Note 1.2) | - | - | 277,120 | 277,120
Goodwill arising from the business combination - Vilas Complex (Note 1.2) | - | - | 94,221 | 94,221
ANEEL grant - use of public property | 63,446 | 1,823 | - | 65,269
Qutoas amortization - concession and authorization (b) | (72,148) | - | (14,987) | (87,135)
Capitalizations for intangible in service | 1,823 | (1,823) | - | -
Hydrological Risk Renegotiation - GSF - Note 1-b | 1,570,543 | - | - | 1,570,543
Balance as of December 31, 2021 | 1,759,286 | - | 714,572 | 2,473,858
(a) Includes the balances of use of public asset and hydrological risk renegotiation
(b) Amortization during the concession/authorization as of the start of commercial operations of the enterprises.
Schedule of piped gas distribution service concession | Schedule of piped gas distribution service concession
19.3 | Piped gas distribution service concession
| Total
Balance as of January 1, 2020 | -
Transfers from accounts receivable - concessions (Note 10.2) | 154,483
Transfers from contract assets (Note 11.2) | 7,277
Amortization of quotas - concession | (29,243)
Loss on disposal | (151)
Balance as of December 31, 2020 | 132,366
Transfers from contract assets (Note 11.2) | 3,398
Transfers from accounts receivable - concessions (Note 10.2) | (1,398)
Quotas amortization - concession | (38,221)
Balance as of December 31, 2021 | 96,145
Schedule of other intangible assets | Schedule of other intangible assets
19.4 | Other intangible assets
| in service | in progress | Total
Balance as of January 1, 2020 | 31,620 | 14,634 | 46,254
Acquisitions | 128 | 10,863 | 10,991
Transfers from property, plant and equipment | 229 | 2,932 | 3,161
Capitalizations for intangible in service | 7,136 | (7,136) | -
Amortization quotas (a) | (11,584) | - | (11,584)
Amortization quotas - PIS/Pasep and Cofins credits | (13) | - | (13)
Loss on disposal | - | (4) | (4)
(-) Reclassification (b) | (8,307) | (635) | (8,942)
Balance as of December 31, 2020 | 19,209 | 20,654 | 39,863
Effect of acquisition of control of Vilas Complex | 10,275 | - | 10,275
Acquisitions | - | 10,375 | 10,375
Transfers from property, plant and equipment | 986 | 482 | 1,468
Capitalizations for intangible in service | 4,453 | (4,453) | -
Amortization quotas (a) | (7,770) | - | (7,770)
Amortization quotas - PIS/Pasep and Cofins credits | (5) | - | (5)
Partial division of assets | (5,047) | (526) | (5,573)
(-) Reclassification (b) | 141 | 599 | 740
Balance as of December 31, 2021 | 22,242 | 27,131 | 49,373
(a) Annual amortization rate: 20%.
(b) Reclassification to Assets classified as held for sale (Note 41).

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