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Operating Costs and Expenses | 12 Months Ended
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Dec. 31, 2023
Operating Costs And Expenses |
Operating Costs and Expenses | 28. OPERATING C OSTS AND EXPENSES The operating costs and expenses of the Company is as follows: a) Cost of energy and gas
| 2023 |  | 2022 |  | 2021 |
Energy purchased for resale |  |  |  |  |  |
Supply from Itaipu Binacional |  | 1,207 |  |  | 1,644 |  |  | 1,946 |
Physical guarantee quota contracts |  | 918 |  |  | 925 |  |  | 832 |
Quotas for Angra I and II nuclear plants |  | 364 |  |  | 357 |  |  | 244 |
Spot market |  | 478 |  |  | 530 |  |  | 1,224 |
Proinfa Program |  | 511 |  |  | 598 |  |  | 401 |
‘Bilateral’ contracts |  | 510 |  |  | 493 |  |  | 418 |
Energy acquired in Regulated Market auctions |  | 3,940 |  |  | 3,334 |  |  | 6,242 |
Energy acquired in the Free Market (1) |  | 5,612 |  |  | 6,003 |  |  | 4,976 |
Distributed generation (‘Geração distribuída’) |  | 2,331 |  |  | 1,977 |  |  | 1,268 |
PIS/Pasep and Cofins credits |  | (1,223 | ) |  | (1,247 | ) |  | (1,450 | )
|  | 14,648 |  |  | 14,614 |  |  | 16,101 |
Charges for use of the national grid |  |  |  |  |  |
Transmission charges – Basic network |  | 3,220 |  |  | 2,925 |  |  | 3,663 |
Distribution charges |  | 54 |  |  | 50 |  |  | 41 |
PIS/Pasep and Cofins credits |  | (337 | ) |  | (304 | ) |  | (367 | )
|  | 2,937 |  |  | 2,671 |  |  | 3,337 |
Gas purchased for resale |  | 2,237 |  |  | 2,735 |  |  | 2,011 |
Total |  | 19,822 |  |  | 20,020 |  |  | 21,449 |
(1) The energy acquired in the free environment by the Parent Company derives from the contracts transferred by Cemig GT, as a result of the process of partial segregation of the Company's energy trading business. (2) The price of the gas molecule acquired by Gasmig is corrected for the variation in Brent-type oil and the variation in the exchange rate. b) Construction and infrastructure costs
| 2023 |  | 2022 |  | 2021 |
Personnel and managers |  | 155 |  |  | 135 |  |  | 100 |
Materials |  | 2,007 |  |  | 2,233 |  |  | 1,150 |
Outsourced services |  | 1,458 |  |  | 1,052 |  |  | 682 |
Others |  | 452 |  |  | 116 |  |  | 104 |
Total |  | 4,072 |  |  | 3,536 |  |  | 2,036 |
c) Operating costs and expenses
| Operating costs |  | Expected credit loss |  | General and administrative expenses |  | Other operating expenses (revenue) |  | 2023 |  | 2022 |  | 2021 |
| 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021 |  |  |  |  |  |  |
Personnel |  | 1,000 |  |  | 976 |  |  | 983 |  |  | - |  |  | - |  |  | - |  |  | 308 |  |  | 376 |  |  | 258 |  |  | - |  |  | - |  |  | - |  |  | 1,308 |  |  | 1,352 |  |  | 1,241 |
Employees’ and managers’ profit sharing |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 4 |  |  | 2 |  |  | 157 |  |  | 79 |  |  | 132 |  |  | 157 |  |  | 83 |  |  | 134 |
Post-employment benefits (note 24) |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 591 |  |  | 626 |  |  | 15 |  |  | 591 |  |  | 626 |  |  | 15 |
Materials |  | 100 |  |  | 93 |  |  | 76 |  |  | - |  |  | - |  |  | - |  |  | 40 |  |  | 55 |  |  | 18 |  |  | - |  |  | - |  |  | - |  |  | 140 |  |  | 148 |  |  | 94 |
Outsourced services |  | 1,652 |  |  | 1,433 |  |  | 1,265 |  |  | - |  |  | - |  |  | - |  |  | 250 |  |  | 273 |  |  | 185 |  |  | - |  |  | - |  |  | - |  |  | 1,902 |  |  | 1,706 |  |  | 1,450 |
Depreciation and amortization |  | 1,247 |  |  | 1,110 |  |  | 947 |  |  | - |  |  | - |  |  | - |  |  | 27 |  |  | 72 |  |  | 102 |  |  | - |  |  | - |  |  | - |  |  | 1,274 |  |  | 1,182 |  |  | 1,049 |
Operating provisions and adjustments for operating losses |  | 333 |  |  | 278 |  |  | 86 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 101 |  |  | 123 |  |  | 145 |  |  | 434 |  |  | 401 |  |  | 231 |
Expected credit losses of accounts receivable |  | - |  |  | - |  |  | - |  |  | 175 |  |  | 109 |  |  | 144 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 175 |  |  | 109 |  |  | 144 |
Reversal of provision for doubtful with related party - Renova |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 1 |  |  | (54 | ) |  | - |  |  | 1 |  |  | (54 | ) |  | - |
Write-off of financial asset (note 14) |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 172 |  |  | - |  |  | - |  |  | 172 |  |  | - |
Gains arising from the sale of equity interest (2) |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (319 | ) |  | (52 | ) |  | - |  |  | (319 | ) |  | (52 | ) |  | - |
Other operation costs and expenses |  | 240 |  |  | 205 |  |  | 81 |  |  | - |  |  | - |  |  | - |  |  | 82 |  |  | 9 |  |  | 7 |  |  | 182 |  |  | 182 |  |  | 306 |  |  | 504 |  |  | 396 |  |  | 394 |
Total |  | 4,572 |  |  | 4,095 |  |  | 3,438 |  |  | 175 |  |  | 109 |  |  | 144 |  |  | 707 |  |  | 789 |  |  | 572 |  |  | 713 |  |  | 1,076 |  |  | 598 |  |  | 6,167 |  |  | 6,069 |  |  | 4,752 |
(1) With the conclusion of the appraisal report, Cemig GT wrote off the financial asset in the amount of R$172 in the second quarter of 2022. This amount is presented in the Income Statements under "Other expenses, net". (2) Refers to the gains obtained on the sale of investments in 2023, of which R$261 refers to the sale of Baguari Energia, R$27 refers to the sale of Retiro Baixo and R$31 refers to the sale of the direct stake in MESA. Further details on these operations are disclosed in note 15. C.1) Outsourced services
| 2023 |  | 2022 |  | 2021 |
Meter reading and bill delivery |  | 161 |  |  | 146 |  |  | 134 |
Communication |  | 169 |  |  | 153 |  |  | 148 |
Maintenance and conservation of electrical facilities and equipment |  | 708 |  |  | 589 |  |  | 485 |
Building conservation and cleaning |  | 85 |  |  | 73 |  |  | 72 |
Security services |  | 20 |  |  | 17 |  |  | 17 |
Consultancy |  | 21 |  |  | 39 |  |  | 43 |
Information technology |  | 174 |  |  | 146 |  |  | 93 |
Disconnection and reconnection |  | 87 |  |  | 90 |  |  | 82 |
Legal services and procedural costs |  | 32 |  |  | 40 |  |  | 32 |
Environment services |  | 58 |  |  | 49 |  |  | 46 |
Cleaning of power line pathways |  | 117 |  |  | 91 |  |  | 92 |
Copying and legal publications |  | 17 |  |  | 18 |  |  | 18 |
Inspection of customers |  | 45 |  |  | 41 |  |  | 33 |
Other |  | 208 |  |  | 214 |  |  | 155 |
Total |  | 1,902 |  |  | 1,706 |  |  | 1,450 |
C.2) Other costs and expenses, net
| 2023 |  | 2022 |  | 2021 |
Leasing and rentals |  | 3 |  |  | 16 |  |  | 6 |
Advertising |  | 14 |  |  | 9 |  |  | 12 |
Own consumption |  | 23 |  |  | 24 |  |  | 28 |
Subsidies and donations |  | 29 |  |  | 26 |  |  | 27 |
Paid concessions |  | 4 |  |  | 4 |  |  | 4 |
Insurance |  | 22 |  |  | 24 |  |  | 29 |
CCEE annual charge |  | 7 |  |  | 6 |  |  | 5 |
Forluz – Administrative running cost |  | 40 |  |  | 36 |  |  | 32 |
Collecting agents |  | 72 |  |  | 77 |  |  | 86 |
Net loss (gain) on deactivation and disposal of assets |  | 210 |  |  | 127 |  |  | 99 |
Obligations deriving from investment contracts |  | 3 |  |  | 3 |  |  | 11 |
Taxes (IPTU, IPVA and other) |  | 10 |  |  | 8 |  |  | 16 |
Other (reversals) (1) |  | 67 |  |  | 36 |  |  | 39 |
Total |  | 504 |  |  | 396 |  |  | 394 |
(1) The following expenses were recognized in 2023, posted in Other operational expenses: a regulatory fine of R$11 resulting from an ANEEL inspection in 2019 to check the procedures and criteria adopted by the Company in application of the conditions required by regulations established for Micro- and Mini-Distributed Generation; and financial compensation totaling R$85 for delay in the commercial services arising from alterations in ANEEL Normative Resolution 1000 of December 7, 2021.

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