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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Intangible Assets |
Schedule of Composition of Intangible Assets |
|  | 2023 |  |  | 2022 |
|  | Historical cost |  |  | Accumulated amortization |  |  | Residual value |  |  | Historical cost |  |  | Accumulated amortization |  |  | Residual value |
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life defined |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Temporary easements |  |  | 15 |  |  |  | (7 | ) |  |  | 8 |  |  |  | 15 |  |  |  | (6 | ) |  |  | 9 |
Onerous concession |  |  | 14 |  |  |  | (10 | ) |  |  | 4 |  |  |  | 14 |  |  |  | (10 | ) |  |  | 4 |
Assets of concession |  |  | 25,217 |  |  |  | (10,933 | ) |  |  | 14,284 |  |  |  | 23,813 |  |  |  | (10,258 | ) |  |  | 13,555 |
Assets of concession - GSF |  |  | 1,031 |  |  |  | (334 | ) |  |  | 697 |  |  |  | 1,032 |  |  |  | (200 | ) |  |  | 832 |
Others |  |  | 139 |  |  |  | (79 | ) |  |  | 60 |  |  |  | 92 |  |  |  | (77 | ) |  |  | 15 |
|  |  | 26,416 |  |  |  | (11,363 | ) |  |  | 15,053 |  |  |  | 24,966 |  |  |  | (10,551 | ) |  |  | 14,415 |
In progress |  |  | 196 |  |  |  | - |  |  |  | 196 |  |  |  | 206 |  |  |  | - |  |  |  | 206 |
Net intangible assets |  |  | 26,612 |  |  |  | (11,363 | ) |  |  | 15,249 |  |  |  | 25,172 |  |  |  | (10,551 | ) |  |  | 14,621 |
Schedule of Changes in Intangible Assets | Changes in Intangible assets are as follow:
|  | 2022 |  |  | Additions |  |  | Disposals |  |  | Amortization |  |  | Transfers (1) |  |  | 2023 |
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life defined |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Temporary easements |  |  | 9 |  |  |  | - |  |  |  | - |  |  |  | (1 | ) |  |  | - |  |  |  | 8 |
Onerous concession |  |  | 4 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 4 |
Assets of concession |  |  | 13,555 |  |  |  | 3 |  |  |  | (81 | ) |  |  | (914 | ) |  |  | 1,721 |  |  |  | 14,284 |
Assets of concession - GSF |  |  | 832 |  |  |  | - |  |  |  | - |  |  |  | (135 | ) |  |  | - |  |  |  | 697 |
Others |  |  | 15 |  |  |  | 26 |  |  |  | (10 | ) |  |  | (5 | ) |  |  | 34 |  |  |  | 60 |
|  |  | 14,415 |  |  |  | 29 |  |  |  | (91 | ) |  |  | (1,055 | ) |  |  | 1,755 |  |  |  | 15,053 |
In progress |  |  | 206 |  |  |  | 158 |  |  |  | (3 | ) |  |  | - |  |  |  | (165 | ) |  |  | 196 |
Net intangible assets |  |  | 14,621 |  |  |  | 187 |  |  |  | (94 | ) |  |  | (1,055 | ) |  |  | 1,590 |  |  |  | 15,249 |
|  | 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 |
Other |  |  | 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 |
Other |  |  | 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 main transfers were made between concession contract assets to Intangible assets: in 2022 of R$2,448 (R$902 in 2021).
Schedule of Amortization Rates | The main amortization rates, which take into account the useful life that management expects for the asset, and reflect the expected pattern of their consumption, are as follows:
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 4.01% and by segment is follows:
Hydroelectric Generation | Wind Power Generation | Gas | Distribution |  | Administration
7.03% | 8.81% | 3.33% | 3.90% |  | 16.26%
Schedule of Power Plant Offer for Tender | The amounts calculated are:
Plant re-offered for tender |  | Amount |
São Simão |  |  | 783 |
Miranda |  |  | 146 |
Jaguara |  |  | 237 |
Volta Grande |  |  | 157 |
Total |  |  | 1,323 |

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