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Property, Plant and Equipment | 12 Months Ended
--- | ---
Dec. 31, 2024
Property, Plant and Equipment |
Property, Plant and Equipment | 15. PROPERTY, PLANT AND EQUIPMENT
| Dec. 31, 2024 |  | Dec. 31, 2023
| Historical cost |  | Accumulated depreciation |  | Net value |  | Historical cost |  | Accumulated depreciation |  | Net value
In service |  |  |  |  |  |  |  |  |  |  |
Land | 249 |  | (36) |  | 213 |  | 247 |  | (33) |  | 214
Reservoirs, dams and watercourses | 3,339 |  | (2,520) |  | 819 |  | 3,323 |  | (2,470) |  | 853
Buildings, works and improvements | 1,095 |  | (883) |  | 212 |  | 1,095 |  | (868) |  | 227
Machinery and equipment | 2,951 |  | (2,143) |  | 808 |  | 2,826 |  | (2,078) |  | 748
Vehicles | 20 |  | (16) |  | 4 |  | 19 |  | (15) |  | 4
Furniture and utensils | 14 |  | (11) |  | 3 |  | 14 |  | (11) |  | 3
| 7,668 |  | (5,609) |  | 2,059 |  | 7,524 |  | (5,475) |  | 2,049
In progress | 1,656 |  | - |  | 1,656 |  | 1,207 |  | - |  | 1,207
Net property, plant and equipment | 9,324 |  | (5,609) |  | 3,715 |  | 8,731 |  | (5,475) |  | 3,256
Changes in PP&E are as follows:
| Dec. 31, 2023 |  | Additions |  | Business combination | Classification as held for sale |  | Disposals |  | Depreciation |  | Transfers / Capitalizations |  | Dec. 31, 2024
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land (1) | 214 |  | 2 |  | - | - |  | (1) |  | (3) |  | 1 |  | 213
Reservoirs, dams and watercourses | 853 |  | - |  | - | (7) |  | (1) |  | (80) |  | 54 |  | 819
Buildings, works and improvements | 227 |  | - |  | - | (1) |  | - |  | (17) |  | 3 |  | 212
Machinery and equipment | 748 |  | 1 |  | 87 | (5) |  | - |  | (71) |  | 48 |  | 808
Vehicles | 4 |  | - |  | - | - |  | - |  | (1) |  | 1 |  | 4
Furniture and utensils | 3 |  | - |  | - | - |  | - |  | - |  | - |  | 3
| 2,049 |  | 3 |  | 87 | (13) |  | (2) |  | (172) |  | 107 |  | 2,059
In progress | 1,207 |  | 581 |  | - | (8) |  | (17) |  | - |  | (107) |  | 1,656
Net property, plant and equipment | 3,256 |  | 584 |  | 87 | (21) |  | (19) |  | (172) |  | - |  | 3,715
(1) | Certain land linked to concession agreements with no indemnity provision is depreciated over the concession period.
| Dec. 31, 2022 |  | Additions |  | Business Combination |  | Disposals - Assets classified as held for sale |  | Disposals |  | Depreciation |  | Transfers / Capitalizations |  | Dec. 31, 2023
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land (1) |  | 217 |  |  | - |  |  | - |  |  | (2) |  |  | - |  |  | (3) |  |  | 2 |  |  | 214
Reservoirs, dams and watercourses |  | 870 |  |  | - |  |  | - |  |  | (22) |  |  | - |  |  | (79) |  |  | 84 |  |  | 853
Buildings, works and improvements |  | 233 |  |  | - |  |  | - |  |  | (5) |  |  | - |  |  | (17) |  |  | 16 |  |  | 227
Machinery and equipment |  | 706 |  |  | 1 |  |  | 70 |  |  | (29) |  |  | (1) |  |  | (69) |  |  | 70 |  |  | 748
Vehicles |  | 2 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (2) |  |  | 4 |  |  | 4
Furniture and utensils |  | 3 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 3
|  | 2,031 |  |  | 1 |  |  | 70 |  |  | (58) |  |  | (1) |  |  | (170) |  |  | 176 |  |  | 2,049
In progress |  | 380 |  |  | 1,005 |  |  | - |  |  | - |  |  | (2) |  |  | - |  |  | (176) |  |  | 1,207
Net property, plant and equipment |  | 2,411 |  |  | 1,006 |  |  | 70 |  |  | (58) |  |  | (3) |  |  | (170) |  |  | - |  |  | 3,256
(1) | Certain land linked to concession agreements with no indemnity provision is depreciated over the concession period.
| Dec. 31, 2021 |  | Additions |  | Disposals |  | Depreciation |  | Transfers / Capitalizations |  | Dec. 31, 2022
In service |  |  |  |  |  |  |  |  |  |  |
Land (1) |  | 220 |  |  | - |  |  | - |  |  | (3) |  |  | - |  |  | 217
Reservoirs, dams and watercourses |  | 944 |  |  | - |  |  | - |  |  | (81) |  |  | 7 |  |  | 870
Buildings, works and improvements |  | 248 |  |  | - |  |  | - |  |  | (17) |  |  | 2 |  |  | 233
Machinery and equipment |  | 697 |  |  | - |  |  | (12) |  |  | (70) |  |  | 91 |  |  | 706
Vehicles |  | 1 |  |  | - |  |  | - |  |  | (1) |  |  | 2 |  |  | 2
Furniture and utensils |  | 3 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 3
|  | 2,113 |  |  | - |  |  | (12) |  |  | (172) |  |  | 102 |  |  | 2,031
In progress |  | 306 |  |  | 176 |  |  | - |  |  | - |  |  | (102) |  |  | 380
Net property, plant and equipment |  | 2,419 |  |  | 176 |  |  | (12) |  |  | (172) |  |  | - |  |  | 2,411
(1) | Certain land linked to concession agreements with no indemnity provision is amortized over the concession period.
Depreciation rates, which take into consideration the expected useful life of the assets, are revised annually by Management and are as follows:
Generation |  | (%) |  |  | Administration |  | (%) |
Reservoirs, dams and watercourses |  |  | 2 |  |  | Software |  |  | 20 |
Buildings - Machine room |  |  | 2 |  |  | Vehicles |  |  | 14.29 |
Buildings - Other |  |  | 3.33 |  |  | IT equipment in general |  |  | 16.67 |
Generator |  |  | 3.33 |  |  | General equipment |  |  | 6.25 |
Water turbine |  |  | 2.5 |  |  | Buildings - Other |  |  | 3.33 |
Pressure tunnel |  |  | 3.13 |  |  |  |  |  |
Command station, panel and cubicle |  |  | 3.57 |  |  |  |  |  |
Floodgate |  |  | 3.33 |  |  |  |  |  |
The Company has not identified any evidence of impairment of its Property, plant and equipment assets. As established in the contract between Cemig GT and the Union (Federative Republic of Brazil), at the end of the concession the assets will revert to the Union, which in turn will indemnify Cemig GT for such assets as have not been depreciated, which will correspond to the remaining balance of the asset at the end of the concession. The generation concession contract also provide that, at the end of the period of each concession, the concession-granting power shall determine the amount to be indemnified, except in the case of the concession contracts related to Lot D of Auction 12/2015, which are the subject of a Concession Grant Fee, as detailed in Explanatory Note 12. For contracts under which CEMIG does not have a right to receive such amounts or there is uncertainty related to collection of the amounts, such as in the case of thermal generation and hydroelectric generation as an independent power producer, no residual value is recognized, and the depreciation rates are adjusted so that all the assets are depreciated within the concession term. Management believes the amounts of indemnity of these assets will be higher than their historic cost depreciated over their respective useful lives. Consortium The Company is a partner in an energy generation consortium for the Queimado plant, for which no separate company with independent legal existence was formed to manage the object of the concession. The Company’s portion in the consortium is recorded and controlled individually in the respective categories of PP&E and Intangible assets.
| Stake in power output (%) | Average annual depreciation rate (%) | Dec. 31, 2024 |  | Dec. 31, 2023
In service |  |  |  |  |
Queimado power plant | 82.5 | 3.94 | 220 |  | 220
Accumulated depreciation |  |  | (150) |  | (142)
Total operation |  |  | 70 |  | 78
In progress |  |  |  |  |
Queimado power plant | 82.5 | - | 8 |  | 2
Total construction |  |  | 8 |  | 2
Total construction |  |  | 78 |  | 80
Accounting policy Property, plant and equipment are stated at the cost, including deemed cost, decommissioning costs and capitalized borrowing costs, less accumulated depreciation and impairment, if there is. The relevant components of certain assets that are replaced over the economic useful life of the main asset are recognized separately and depreciated over the estimated period until their replacement. Periodic maintenance costs are recognized in the income statement as incurred. Gains and losses resulting from the disposal of a property, plant and equipment, are measured as the difference between the net proceeds obtained from the sale and the asset’s book value and are recognized in the Statement of income when the asset is disposed of. Estimations and judgments Depreciation is calculated on the balance of property, plant and equipment in service and investments in consortia, by the straight-line method, using the rates that reflect the estimated useful life of the assets, for assets related to energy activities, limited in certain circumstances to the periods of the related concession contracts. Impairment Management assesses at the end of each reporting period, whether there have been events or changes in the economic, operational or technological circumstances of its assets or Cash Generating Units (CGUs) that may indicate deterioration or loss of their recoverable value. The Company considers the generation and transmission assets held by Cemig GT to be two separate cash-generating units, and the distribution assets held by Cemig D to be a single cash-generating unit. The other assets are analyzed individually. If there are indications of impairment, the Company estimates the recoverable value of the asset or CGU and, if the net book value exceeds the recoverable value, the impairment loss is recognized by adjusting the net book value to the recoverable value. In this case, the recoverable amount of an asset or a certain cash-generating unit is defined as the higher of its value in use and its net selling price.

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