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17. PROPERTY, PLANT AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [abstract] |
PROPERTY, PLANT AND EQUIPMENT |
17. | PROPERTY, PLANT AND EQUIPMENT
|  | 2020 |  | 2019
|  | Historical cost |  | Accumulated depreciation |  | Net value |  | Historical cost |  | Accumulated depreciation |  | Net value
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land |  |  | 247 |  |  |  | (23 | ) |  |  | 224 |  |  |  | 248 |  |  |  | (19 | ) |  |  | 229 |
Reservoirs, dams and watercourses |  |  | 3,300 |  |  |  | (2,280 | ) |  |  | 1,020 |  |  |  | 3,280 |  |  |  | (2,200 | ) |  |  | 1,080 |
Buildings, works and improvements |  |  | 1,100 |  |  |  | (836 | ) |  |  | 264 |  |  |  | 1,092 |  |  |  | (818 | ) |  |  | 274 |
Machinery and equipment |  |  | 2,647 |  |  |  | (1,930 | ) |  |  | 717 |  |  |  | 2,598 |  |  |  | (1,869 | ) |  |  | 729 |
Vehicles |  |  | 21 |  |  |  | (19 | ) |  |  | 2 |  |  |  | 20 |  |  |  | (18 | ) |  |  | 2 |
Furniture and utensils |  |  | 14 |  |  |  | (11 | ) |  |  | 3 |  |  |  | 14 |  |  |  | (11 | ) |  |  | 3 |
|  |  | 7,329 |  |  |  | (5,099 | ) |  |  | 2,230 |  |  |  | 7,252 |  |  |  | (4,935 | ) |  |  | 2,317 |
In progress |  |  | 177 |  |  |  | — |  |  |  | 177 |  |  |  | 133 |  |  |  | — |  |  |  | 133 |
Net property, plant and equipment |  |  | 7,506 |  |  |  | (5,099 | ) |  |  | 2,407 |  |  |  | 7,385 |  |  |  | (4,935 | ) |  |  | 2,450 |
Changes in PP&E are as follows:
|  | 2019 |  | Additions |  | Disposals (3) |  | Depreciation |  | Transfers / capitalizations (2) |  | 2020
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land (1) |  |  | 229 |  |  |  | — |  |  |  | (1 | ) |  |  | (4 | ) |  |  | — |  |  |  | 224 |
Reservoirs, dams and watercourses |  |  | 1,080 |  |  |  | — |  |  |  | — |  |  |  | (80 | ) |  |  | 20 |  |  |  | 1,020 |
Buildings, works and improvements |  |  | 274 |  |  |  | — |  |  |  | — |  |  |  | (18 | ) |  |  | 8 |  |  |  | 264 |
Machinery and equipment |  |  | 729 |  |  |  | 20 |  |  |  | (2 | ) |  |  | (79 | ) |  |  | 49 |  |  |  | 717 |
Vehicles |  |  | 2 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2 |
Furniture and utensils |  |  | 3 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3 |
|  |  | 2,317 |  |  |  | 20 |  |  |  | (3 | ) |  |  | (181 | ) |  |  | 77 |  |  |  | 2,230 |
In progress |  |  | 133 |  |  |  | 112 |  |  |  | 11 |  |  |  | — |  |  |  | (79 | ) |  |  | 177 |
Net property, plant and equipment |  |  | 2,450 |  |  |  | 132 |  |  |  | 8 |  |  |  | (181 | ) |  |  | (2 | ) |  |  | 2,407 |
| (1) | Certain land sites linked to concession contracts and without provision for reimbursement are amortized in accordance with the period of the concession.
| (2) | Balances of R$2 were transferred to Intangible assets from PP&E.
| (3) | Includes the impairment loss recognized for assets in progress.
|  | 2018 |  | Additions |  | Disposals |  | Depreciation |  | Transfers / capitalizations (2) |  | 2019
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land (1) |  |  | 215 |  |  |  | — |  |  |  | — |  |  |  | (3 | ) |  |  | 17 |  |  |  | 229 |
Reservoirs, dams and watercourses |  |  | 1,150 |  |  |  | — |  |  |  | (4 | ) |  |  | (80 | ) |  |  | 14 |  |  |  | 1,080 |
Buildings, works and improvements |  |  | 314 |  |  |  | — |  |  |  | (5 | ) |  |  | (19 | ) |  |  | (16 | ) |  |  | 274 |
Machinery and equipment |  |  | 854 |  |  |  | — |  |  |  | (81 | ) |  |  | (78 | ) |  |  | 34 |  |  |  | 729 |
Vehicles |  |  | 5 |  |  |  | — |  |  |  | — |  |  |  | (3 | ) |  |  | — |  |  |  | 2 |
Furniture and utensils |  |  | 4 |  |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | 3 |
|  |  | 2,542 |  |  |  |  |  |  |  | (91 | ) |  |  | (183 | ) |  |  | 49 |  |  |  | 2,317 |
In progress |  |  | 120 |  |  |  | 70 |  |  |  | (12 | ) |  |  | — |  |  |  | (45 | ) |  |  | 133 |
Net property, plant and equipment |  |  | 2,662 |  |  |  | 70 |  |  |  | (103 | ) |  |  | (183 | ) |  |  | 4 |  |  |  | 2,450 |
| (1) | Certain land sites linked to concession contracts and without provision for reimbursement are amortized in accordance with the period of the concession.
| (2) | Balances of R$4 were transferred between Intangible assets, concession contract assets and PP&E.
|  | 2017 |  | Additions |  | Disposals |  | Depreciation |  | Transfer to Held for sale |  | Adjustment for business combination |  | Transfers / capitalizations |  | 2018
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land (1) |  |  | 211 |  |  |  | — |  |  |  | — |  |  |  | (2 | ) |  |  | — |  |  |  | — |  |  |  | 6 |  |  |  | 215 |
Reservoirs, dams and watercourses |  |  | 1,234 |  |  |  | — |  |  |  | (2 | ) |  |  | (82 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,150 |
Buildings, works and improvements |  |  | 331 |  |  |  | — |  |  |  | — |  |  |  | (19 | ) |  |  | — |  |  |  | — |  |  |  | 2 |  |  |  | 314 |
Machinery and equipment |  |  | 874 |  |  |  | — |  |  |  | (9 | ) |  |  | (70 | ) |  |  | (256 | ) |  |  | 296 |  |  |  | 19 |  |  |  | 854 |
Vehicles |  |  | 3 |  |  |  | — |  |  |  |  |  |  |  | (2 | ) |  |  | — |  |  |  | — |  |  |  | 4 |  |  |  | 5 |
Furniture and utensils |  |  | 3 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1 |  |  |  | 4 |
|  |  | 2,656 |  |  |  | — |  |  |  | (11 | ) |  |  | (175 | ) |  |  | (256 | ) |  |  | 296 |  |  |  | 32 |  |  |  | 2,542 |
In progress |  |  | 106 |  |  |  | 77 |  |  |  | (22 | ) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (41 | ) |  |  | 120 |
Net property, plant and equipment |  |  | 2,762 |  |  |  | 77 |  |  |  | (33 | ) |  |  | (175 | ) |  |  | (256 | ) |  |  | 296 |  |  |  | (9 | ) |  |  | 2,662 |
| (1) | Certain land sites linked to concession contracts and without provision for reimbursement are amortized in accordance with the period of the concession.
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 average annual depreciation rate for the year 2020 is 3.14% (3.13% in 2019 and 3.72% in 2018). The segregation by activity is as follows:
Hydroelectric Generation |  | Wind Power Generation |  | Administration
| 2.96 | % |  |  | 4.94 | % |  |  | 6,19 | %
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 indemnified to the Company for the residual value. 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 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 (%) |  | 2020 |  | 2019
In service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Usina de Queimado |  |  | 82.50 |  |  |  | 3.93 |  |  |  | 218 |  |  |  | 217 |
Accumulated depreciation |  |  |  |  |  |  |  |  |  |  | (117 | ) |  |  | (109 | )
Total |  |  |  |  |  |  |  |  |  |  | 101 |  |  |  | 108 |
In progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Usina de Queimado |  |  | 82.50 |  |  |  | — |  |  |  | 2 |  |  |  | 1 |
Total |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  | 1 |

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- References No definition available. + Details
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- Definition The entire disclosure for property, plant and equipment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&doctype=Standard&dita_xref=IAS16_g73-79_TI -URIDate 2020-01-01 + Details
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