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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2017
Text block1 [abstract] |
Property, Plant and Equipment |
17. | PROPERTY, PLANT AND EQUIPMENT
|  | 2017 |  |  | 2016 |
| Historical cost |  |  | Accumulated depreciation |  |  | Net value |  |  | Historical cost |  |  | Accumulated depreciation |  |  | Net value |
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land |  |  | 225 |  |  |  | (14 | ) |  |  | 211 |  |  |  | 287 |  |  |  | (8 | ) |  |  | 279 |
Reservoirs, dams and watercourses |  |  | 3,285 |  |  |  | (2,051 | ) |  |  | 1,234 |  |  |  | 5,347 |  |  |  | (3,586 | ) |  |  | 1,761 |
Buildings, works and improvements |  |  | 1,117 |  |  |  | (786 | ) |  |  | 331 |  |  |  | 1,789 |  |  |  | (1,371 | ) |  |  | 418 |
Machinery and equipment |  |  | 2,936 |  |  |  | (2,062 | ) |  |  | 874 |  |  |  | 4,519 |  |  |  | (3,347 | ) |  |  | 1,172 |
Vehicles |  |  | 29 |  |  |  | (26 | ) |  |  | 3 |  |  |  | 29 |  |  |  | (25 | ) |  |  | 4 |
Furniture and utensils |  |  | 16 |  |  |  | (13 | ) |  |  | 3 |  |  |  | 15 |  |  |  | (12 | ) |  |  | 3 |
|  |  | 7,608 |  |  |  | (4,952 | ) |  |  | 2,656 |  |  |  | 11,986 |  |  |  | (8,349 | ) |  |  | 3,637 |
In progress |  |  | 106 |  |  |  | — |  |  |  | 106 |  |  |  | 138 |  |  |  | — |  |  |  | 138 |
Net property, plant and equipment |  |  | 7,714 |  |  |  | (4,952 | ) |  |  | 2,762 |  |  |  | 12,124 |  |  |  | (8,349 | ) |  |  | 3,775 |
This table shows the changes in PP&E:
|  | 2016 |  |  | Addition |  |  | Jaguara, Miranda and Volta Grande Plants (1) |  |  | Disposals |  |  | Depreciation |  |  | Transfers / capitalizations |  |  | 2017 |
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land |  |  | 279 |  |  |  | — |  |  |  | (61 | ) |  |  | (1 | ) |  |  | (6 | ) |  |  | — |  |  |  | 211 |
Reservoirs, dams and watercourses |  |  | 1,761 |  |  |  | — |  |  |  | (441 | ) |  |  | (4 | ) |  |  | (85 | ) |  |  | 3 |  |  |  | 1,234 |
Buildings, works and improvements |  |  | 418 |  |  |  | — |  |  |  | (69 | ) |  |  | — |  |  |  | (20 | ) |  |  | 2 |  |  |  | 331 |
Machinery and equipment |  |  | 1,172 |  |  |  | — |  |  |  | (305 | ) |  |  | (5 | ) |  |  | (93 | ) |  |  | 105 |  |  |  | 874 |
Vehicles |  |  | 4 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | 3 |
Furniture and utensils |  |  | 3 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3 |
|  |  | 3,637 |  |  |  | — |  |  |  | (876 | ) |  |  | (10 | ) |  |  | (205 | ) |  |  | 110 |  |  |  | 2,656 |
In progress |  |  | 138 |  |  |  | 83 |  |  |  |  |  |  |  | (17 | ) |  |  | — |  |  |  | (98 | ) |  |  | 106 |
Net property, plant and equipment |  |  | 3,775 |  |  |  | 83 |  |  |  | (876 | ) |  |  | (27 | ) |  |  | (205 | ) |  |  | 12 |  |  |  | 2,762 |
(1) | Transferred to Concession financial assets , in relation to the Jaguara, Miranda and Volta Grande Plants (more details in Note 15).
|  | 2015 |  |  | Addition |  |  | Disposals |  |  | Depreciation |  |  | Transfers / capitalizations |  |  | 2016 |
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land |  |  | 279 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 279 |
Reservoirs, dams and watercourses |  |  | 1,830 |  |  |  | — |  |  |  | — |  |  |  | (99 | ) |  |  | 30 |  |  |  | 1,761 |
Buildings, works and improvements |  |  | 437 |  |  |  | — |  |  |  | (1 | ) |  |  | (23 | ) |  |  | 5 |  |  |  | 418 |
Machinery and equipment |  |  | 1,192 |  |  |  | — |  |  |  | (42 | ) |  |  | (110 | ) |  |  | 132 |  |  |  | 1,172 |
Vehicles |  |  | 8 |  |  |  | — |  |  |  | — |  |  |  | (2 | ) |  |  | (2 | ) |  |  | 4 |
Furniture and utensils |  |  | 4 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | 3 |
|  |  | 3,750 |  |  |  | — |  |  |  | (43 | ) |  |  | (234 | ) |  |  | 164 |  |  |  | 3,637 |
In progress |  |  | 190 |  |  |  | 120 |  |  |  | (13 | ) |  |  | — |  |  |  | (159 | ) |  |  | 138 |
Net property, plant and equipment |  |  | 3,940 |  |  |  | 120 |  |  |  | (56 | ) |  |  | (234 | ) |  |  | 5 |  |  |  | 3,775 |
|  | 2014 |  |  | Additions |  |  | Disposals |  |  | Transfer of assets to Aliança Geração de Energia |  |  | Indemnity receivable |  |  | Depreciation |  |  | Transfers to Other long term assets |  |  | Transfers / capitalizations |  |  | 2015 |
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land |  |  | 372 |  |  |  | — |  |  |  | (12 | ) |  |  | (41 | ) |  |  | (16 | ) |  |  | (3 | ) |  |  | (17 | ) |  |  | (4 | ) |  |  | 279 |
Reservoirs, dams and water courses |  |  | 2,261 |  |  |  | — |  |  |  | — |  |  |  | (163 | ) |  |  | (46 | ) |  |  | (127 | ) |  |  | (102 | ) |  |  | 7 |  |  |  | 1,830 |
Buildings, works and improvements |  |  | 609 |  |  |  | — |  |  |  | (1 | ) |  |  | (116 | ) |  |  | (17 | ) |  |  | (32 | ) |  |  | (13 | ) |  |  | 7 |  |  |  | 437 |
Machinery and equipment |  |  | 2,053 |  |  |  | — |  |  |  | (3 | ) |  |  | (308 | ) |  |  | (466 | ) |  |  | (149 | ) |  |  | (69 | ) |  |  | 134 |  |  |  | 1,192 |
Vehicles |  |  | 9 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (3 | ) |  |  | — |  |  |  | 2 |  |  |  | 8 |
Furniture and utensils |  |  | 5 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | 4 |
|  |  | 5,309 |  |  |  | — |  |  |  | (16 | ) |  |  | (628 | ) |  |  | (545 | ) |  |  | (314 | ) |  |  | (201 | ) |  |  | 145 |  |  |  | 3,750 |
In progress |  |  | 235 |  |  |  | 126 |  |  |  | (4 | ) |  |  | (3 | ) |  |  | (1 | ) |  |  | (1 | ) |  |  | (22 | ) |  |  | (140 | ) |  |  | 190 |
Net PP&E |  |  | 5,544 |  |  |  | 126 |  |  |  | (20 | ) |  |  | (631 | ) |  |  | (546 | ) |  |  | (315 | ) |  |  | (223 | ) |  |  | 5 |  |  |  | 3,940 |
The average annual depreciation rate for the year 2017 is 3.14% (cf. 3.51% in 2016 and 3.39% in 2015). Depreciation rates, which take into consideration the expected useful life of the assets, are revised annually by Management. The Company has not identified any evidence of impairment of its Property, plant and equipment assets. The generation concession contracts provide that at the end of each concession the grantor must determine the amount to be paid to Cemig GT for the residual value of the infrastructure assets. Management believes that the amounts ultimately received will be higher than the historical residual value. The residual value of the assets is the residual balance of the assets at the end of the concession contract which will be transferred to the grantor at the end of the concession contract and for which Cemig is entitled to receive in cash. 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. Consortium Cemig GT is a partner in the electricity generation consortium for the Queimado plant, for which no separate company with independent legal existence was formed to manage the object of the concession, whose controls are being kept in Fixed assets and Intangible assets. Cemig GT’s portion in the consortium is recorded and controlled separately in the respective categories of PP&E and Intangible assets.
|  | Interest in power output, % |  |  | Average annual depreciation rate % |  |  | 2017 |  |  | 2016 |
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Queimado plant |  |  | 82.50 |  |  |  | 4.0 |  |  |  | 217 |  |  |  | 217 |
Accumulated depreciation |  |  | — |  |  |  | — |  |  |  | (91 | ) |  |  | (90 | )
Total in operation |  |  |  |  |  |  |  |  |  |  | 126 |  |  |  | 127 |

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