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INTANGIBLE ASSETS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Intangible Assets |
Schedule of composition of intangible assets |
Schedule of composition of intangible assets |  |  |  |  |  |
| 2022 | 2021
Historical cost | Accumulated amortization | Residual value | Historical cost | Accumulated amortization | Residual value
In service |  |  |  |  |  |
Useful life defined |  |  |  |  |  |
Temporary easements | 15 | (6) | 9 | 15 | (5) | 10
Onerous concession | 14 | (10) | 4 | 13 | (8) | 5
Assets of concession | 23,813 | (10,258) | 13,555 | 21,476 | (9,669) | 11,807
Assets of concession - GSF | 1,032 | (200) | 832 | 1,032 | (66) | 966
Others | 92 | (77) | 15 | 78 | (74) | 4
| 24,966 | (10,551) | 14,415 | 22,614 | (9,822) | 12,792
In progress | 206 | - | 206 | 161 | - | 161
Net intangible assets | 25,172 | (10,551) | 14,621 | 22,775 | (9,822) | 12,953
Schedule of changes in intangible assets |
Schedule of changes in intangible assets |  |  |  |  |  |
| 2021 | Additions | Disposals | Amortization | Transfers (1) | 2022
In service |  |  |  |  |  |
Useful life defined |  |  |  |  |  |
Temporary easements | 10 | - | - | (1) | - | 9
Onerous concession | 5 | - | - | (1) | - | 4
Assets of concession | 11,807 | - | (57) | (817) | 2,622 | 13,555
Assets of concession - GSF | 966 | - | - | (134) | - | 832
Others | 4 | 13 | - | (3) | 1 | 15
| 12,792 | 13 | (57) | (956) | 2,623 | 14,415
In progress | 161 | 106 | - | - | (61) | 206
Net intangible assets | 12,953 | 119 | (57) | (956) | 2,562 | 14,621
| 2020 | Additions | Disposals | Amortization | Transfers (1) | 2021
In service |  |  |  |  |  |
Useful life defined |  |  |  |  |  |
Temporary easements | 9 | - | - | (1) | 2 | 10
Onerous concession | 6 | - | - | (1) | - | 5
Assets of concession | 11,674 | - | (23) | (757) | 913 | 11,807
Assets of concession - GSF | - | 1,032 | - | (66) | - | 966
Others | 8 | - | - | (4) | - | 4
| 11,697 | 1,032 | (23) | (829) | 915 | 12,792
In progress | 113 | 51 | - | - | (3) | 161
Net intangible assets | 11,810 | 1,083 | (23) | (829) | 912 | 12,953
(1) | The transfers were made between concession contract assets to Intangible assets: in 2022 of R$2,448 (R$902 in 2021).
| 2019 | Additions | Disposals (1) | Amortization | Transfers (2) | 2020
In service |  |  |  |  |  |
Useful life defined |  |  |  |  |  |
Temporary easements | 8 | - | - | - | 1 | 9
Onerous concession | 7 | - | - | (1) | - | 6
Assets of concession | 11,517 | - | (24) | (738) | 919 | 11,674
Others | 10 | - | - | (5) | 3 | 8
| 11,542 | - | (24) | (744) | 923 | 11,697
In progress | 82 | 41 | - | - | (10) | 113
Net intangible assets | 11,624 | 41 | (24) | (744) | 913 | 11,810
(1) |  | This includes the impairment reversal, in the amount of R$14, recognized in the Income Statement under “Other expenses”, as a result of the test of impairment of intangible assets, relating to the authorization for wind power generation granted to Volta do Rio, on December 31, 2020. More information is available on this note.
(2) |  | The transfers were made between Intangible assets, concession contract assets, financial assets and property, plant and equipment are as follows: (1) R$906 from concession contract assets to intangible assets; (2) R$2 from property, plant and equipment to intangible assets; and (3) R$5 from concession financial asset to intangible assets.
Schedule of amortization rates |
Schedule of amortization rates |  |  |
Energy | (%) | Administration | (%)
System cable - below 69 KV | 6.67 | Software | 20.00
System cable - below 69 KV | 3.57 | Vehicles | 14.29
Structure - Posts | 3.57 | General equipment | 6.25
Overhead distribution transformer | 4.00 | Buildings | 3.33
Circuit breaker - up to 69 kV | 3.03 |  |
Capacitor bank - up to 69 kV | 6.67 |  |
Voltage regulator - up to 69 kV | 4.35 |  |
Gas | (%) | Administration | (%)
Tubing | 3.33 | Software | 20.00
Buildings, works and improvements | 4.00 | Vehicles | 20.00
Improvements in leased properties | 10.00 | Data processing equipment | 20.00
Machinery and equipment | 5.00 to 20.00 | Furniture | 10.00
The annual average amortization rate is 4.00% and by segment is follows:
Hydroelectric Generation | Wind Power Generation | Gas | Distribution | Administration
7.06% | 8.81% | 3.33% | 3.91% | 15.82%
Schedule of power plant |
Schedule of power plant |  |  |  |
Power Plant | Intangible assets - Right to extension of concession | End of concession | Extension in years | New end of concession
CEMIG Geração Camargos | 9 | 01/05/2046 | 7 | 01/03/2053
CEMIG Geração Itutinga | 8 | 01/05/2046 | 7 | 01/03/2053
CEMIG Geração Leste | - |  |  |
Dona Rita | - | 07/03/2046 | 4 | 07/19/2050
Ervalia | - | 07/03/2046 | 0.8 | 04/19/2047
Neblina | - | 07/03/2046 | 0.8 | 04/19/2047
Peti | - | 01/05/2046 | 7 | 01/03/2053
Sinceridade | - | 07/03/2046 | 0.7 | 03/12/2047
Tronqueiras | - | 01/05/2046 | 1 | 12/26/2046
CEMIG Geração Oeste | - |  |  |
Cajuru (CEMIG) | - | 01/05/2046 | 7 | 01/03/2053
CEMIG Geração Salto Grande | 40 | 01/05/2046 | 7 | 01/03/2053
CEMIG Geração Sul | 2 |  |  |
Coronel Domiciano | - | 07/03/2046 | 0.8 | 04/11/2047
Joasal | - | 01/05/2046 | 7 | 01/03/2053
Marmelos | - | 01/05/2046 | 7 | 01/03/2053
Paciencia | - | 01/05/2046 | 7 | 01/03/2053
Piau | 1 | 01/05/2046 | 7 | 01/03/2053
CEMIG Geração Três Marias | 116 | 01/05/2046 | 7 | 01/03/2053
CEMIG Poço Fundo | 1 | 05/29/2045 | 7 | 05/27/2052
CEMIG PCH (Pai Joaquim) | - | 04/04/2032 | 0.4 | 09/14/2032
Horizontes | - |  |  |
Machado Mineiro | - | 07/08/2025 | 1.9 | 05/21/2027
Rosal | 9 | 05/08/2032 | 3.6 | 12/13/2035
Sá Carvalho | 40 | 12/01/2024 | 1.7 | 08/27/2026
Total | 226 |  |  |
Nova Ponte | 256 | 07/23/2025 | 2.1 | 08/11/2027
Irapé | 105 | 02/28/2035 | 2.6 | 09/18/2037
Power Plant | Intangible assets - Right to extension of concession | End of concession | Extension in years | New end of concession
Queimado | 19 | 12/18/2032 | 1.8 | 06/26/2034
Sao Bernardo (CEMIG) | 1 | 08/19/2025 | 1.9 | 06/27/2027
Emborcação | 426 | 07/23/2025 | 1.8 | 05/26/2027
Total CEMIG GT | 807 |  |  |
Total (R$) | 1,033 |  |  |
Schedule of power plant offer for tender |
Schedule of power plant offer for tender |
CEMIG Geração - Plant re-offered for tender | Amount
São Simão | 783
Miranda | 145
Jaguara | 237
Volta Grande | 157
Total | 1,322

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