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29. REVENUE (Tables) | 12 Months Ended
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Dec. 31, 2019
Revenue [abstract] |
Schedule of net operating revenue | Revenues are measured at the fair value of the consideration received or to be received and are recognized on a monthly basis as and when: (i) Rights and obligations of the contract with the customer are identified; (ii) the performance obligation of the contract is identified; (iii) the price for each transaction has been determined; (iv) the transaction price has been allocated to the performance obligations defined in the contract; and (v) the performance obligations have been complied.
|  | 2019 |  |  |  | 2018 |  |  |  | 2017 |
Revenue from supply of energy(a) |  | 26,928 |  |  |  | 24,872 |  |  |  | 23,701 |
Revenue from use of the electricity distribution systems (TUSD) (b) |  | 2,722 |  |  |  | 2,045 |  |  |  | 1,611 |
CVA, and Other financial components (c) |  | 58 |  |  |  | 1,973 |  |  |  | 988 |
Transmission revenue |  |  |  |  |  |  |  |  |  |  |
Transmission concession revenue (d) |  | 504 |  |  |  | 411 |  |  |  | 371 |
Transmission construction revenue (e) |  | 220 |  |  |  | 96 |  |  |  | 25 |
Transmission assets - indemnity revenue (f) |  | 156 |  |  |  | 250 |  |  |  | 373 |
Generation assets - Indemnity Revenue |  | – |  |  |  | 55 |  |  |  | 271 |
Distribution construction revenue (e) |  | 980 |  |  |  | 802 |  |  |  | 1,094 |
Adjustment to expectation of cash flow from indemnifiable financial assets of distribution concession (g) |  | 18 |  |  |  | – |  |  |  | 9 |
Revenue on financial updating of the Concession Grant Fee (h) |  | 318 |  |  |  | 321 |  |  |  | 317 |
Energy transactions on the CCEE (i) |  | 432 |  |  |  | 217 |  |  |  | 860 |
Supply of gas |  | 2,298 |  |  |  | 1,995 |  |  |  | 1,759 |
Fine for violation of service continuity indicator (1) |  | (58 | ) |  |  | (44 | ) |  |  | – |
Recovery of PIS/Pasep and Cofins (note 10) |  | 1,428 |  |  |  | – |  |  |  | – |
Other operating revenues (j) |  | 1,722 |  |  |  | 1,585 |  |  |  | 1,484 |
Deductions on revenue (k) |  | (12,336 | ) |  |  | (12,312 | ) |  |  | (11,151 | )
Net operating revenue |  | 25,390 |  |  |  | 22,266 |  |  |  | 21,712 |
(1) As from January 1, 2018 these amounts began to be recognized as a reduction of revenue, rather than as operational expenses, as per the change contained in IFRS 15.
Schedule of the supply of electricity by type of consumer | This table shows energy supply by type of customer:
|  | GWh (1) |  |  |  | R$ |
|  | 2019 |  |  |  | 2018 |  |  |  | 2017 |  |  |  | 2019 |  |  |  | 2018 |  |  |  | 2017 |
Residential |  | 10,538 |  |  |  | 10,267 |  |  |  | 10,008 |  |  |  | 9,668 |  |  |  | 8,658 |  |  |  | 7,842 |
Industrial |  | 16,024 |  |  |  | 17,689 |  |  |  | 17,761 |  |  |  | 4,760 |  |  |  | 4,893 |  |  |  | 4,907 |
Commercial, services and others |  | 9,567 |  |  |  | 8,380 |  |  |  | 7,507 |  |  |  | 5,439 |  |  |  | 4,683 |  |  |  | 4,342 |
Rural |  | 3,795 |  |  |  | 3,615 |  |  |  | 3,651 |  |  |  | 2,058 |  |  |  | 1,794 |  |  |  | 1,629 |
Public authorities |  | 905 |  |  |  | 871 |  |  |  | 866 |  |  |  | 654 |  |  |  | 575 |  |  |  | 532 |
Public lighting |  | 1,357 |  |  |  | 1,384 |  |  |  | 1,367 |  |  |  | 614 |  |  |  | 585 |  |  |  | 537 |
Public services |  | 1,372 |  |  |  | 1,316 |  |  |  | 1,301 |  |  |  | 725 |  |  |  | 646 |  |  |  | 589 |
Subtotal |  | 43,558 |  |  |  | 43,522 |  |  |  | 42,461 |  |  |  | 23,918 |  |  |  | 21,834 |  |  |  | 20,378 |
Own consumption |  | 38 |  |  |  | 41 |  |  |  | 37 |  |  |  | – |  |  |  | – |  |  |  | – |
Unbilled revenue |  |  |  |  |  |  |  |  |  | – |  |  |  | 134 |  |  |  | 48 |  |  |  | 61 |
|  | 43,596 |  |  |  | 43,563 |  |  |  | 42,498 |  |  |  | 24,052 |  |  |  | 21,882 |  |  |  | 20,439 |
Wholesale supply to other concession holders (2) |  | 11,448 |  |  |  | 11,992 |  |  |  | 12,777 |  |  |  | 2,943 |  |  |  | 3,002 |  |  |  | 1,727 |
Wholesale supply unbilled, net |  | – |  |  |  | – |  |  |  | – |  |  |  | (67 | ) |  |  | (12 | ) |  |  | 1,535 |
Total |  | 55,044 |  |  |  | 55,555 |  |  |  | 55,275 |  |  |  | 26,928 |  |  |  | 24,872 |  |  |  | 23,701 |
(1) | Data not audited by external auditors.
(2) | Includes a CCEAR (Regulated Market Sales Contract), ‘bilateral contracts’ with other agents, and the revenues from management of generation assets (GAG) for the 18 hydroelectric plants of Lot D of Auction no 12/2015.
Schedule of other operating revenues | j) Other operating revenues
|  | 2019 |  |  |  | 2018 |  |  |  | 2017 |
Charged service |  | 17 |  |  |  | 14 |  |  |  | 10 |
Telecoms services |  | – |  |  |  | – |  |  |  | 149 |
Services rendered |  | 183 |  |  |  | 188 |  |  |  | 156 |
Subsidies (1) |  | 1,266 |  |  |  | 1,136 |  |  |  | 1,034 |
Rental and leasing |  | 189 |  |  |  | 90 |  |  |  | 121 |
Reimbursement for decontracted supply |  | 65 |  |  |  | 145 |  |  |  | - |
Other |  | 2 |  |  |  | 12 |  |  |  | 14 |
|  | 1,722 |  |  |  | 1,585 |  |  |  | 1,484 |
(1) | Revenue recognized for the tariff subsidies applied to users of distribution and transmission services, including low income tariff incentive refunded by Eletrobras.
Schedule of deductions from revenue | k) Deductions on revenue
|  | 2019 |  |  |  | 2018 |  |  |  | 2017 |
Taxes on revenue |  |  |  |  |  |  |  |  |  |  |
ICMS |  | 6,358 |  |  |  | 5,657 |  |  |  | 5,847 |
Cofins |  | 2,395 |  |  |  | 2,547 |  |  |  | 2,237 |
PIS/Pasep |  | 521 |  |  |  | 553 |  |  |  | 455 |
Others |  | 8 |  |  |  | 8 |  |  |  | 8 |
|  | 9,282 |  |  |  | 8,765 |  |  |  | 8,547 |
Charges to the customer |  |  |  |  |  |  |  |  |  |  |
Global Reversion Reserve (RGR) |  | 16 |  |  |  | 19 |  |  |  | 17 |
Energy Efficiency Program (PEE) |  | 69 |  |  |  | 64 |  |  |  | 56 |
Energy Development Account (CDE) |  | 2,448 |  |  |  | 2,603 |  |  |  | 1,822 |
Research and Development (R&D) |  | 41 |  |  |  | 38 |  |  |  | 38 |
National Scientific and Technological Development Fund (FNDCT) |  | 41 |  |  |  | 38 |  |  |  | 38 |
Energy System Expansion Research (EPE of MME) |  | 20 |  |  |  | 19 |  |  |  | 19 |
Customer charges – Proinfa alternative sources program |  | 52 |  |  |  | 40 |  |  |  | 39 |
Energy services inspection fee |  | 30 |  |  |  | 26 |  |  |  | 29 |
Royalties for use of water resources |  | 43 |  |  |  | 45 |  |  |  | 92 |
Customer charges – the ‘Flag Tariff’ system |  | 294 |  |  |  | 655 |  |  |  | 454 |
|  | 3,054 |  |  |  | 3,547 |  |  |  | 2,604 |
|  | 12,336 |  |  |  | 12,312 |  |  |  | 11,151

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