Investor Presentaiton

28. Net revenue from products sold and services rendered Accounting policy Revenue represents the fair value of the consideration received or recei- vable from the sale of goods in the ordinary course of business of the sub- sidiaries. Revenue is shown net of value added tax, rebates and discounts after elimination of sales among consolidated companies. The subsidiaries recognize revenue when: (i) the amount of revenue can be measured reliably; (ii) is probable that future economic benefits will flow to the entity; and (iii) specific criteria have been met for each of the Company's and its subsidiaries' activities. The accounting recognition of revenue results from the amounts to be billed to customers in accordance with the methodology and prices established in each contract, adjusted to the amounts of energy actually generated, when applicable. These adjustments result from the CCEE mechanism that verifies the net exposure of the subsidiary Votener (sales, generation, pur- chases and consumption), called energy balance. The mechanisms explained above result in the recognition of gross reve- nue, at its fair value, presented net of any sales tax, to the extent that it is probable that economic benefits will flow to the indirect subsidiary Votener. (a) Reconciliation of revenue 2021 2020 = Revenue will not be reliably measured if all terms of sale are not resolved. The subsidiaries bases their estimates on historical results, taking into ac- count the type of customer, the type of transaction and the specificities of each agreement. Revenue recognition is based on the following principles: (i) Sales of products and service Revenue is shown net of value added tax, returns, rebates and discounts, after eliminating sales within the consolidated companies. (ii) Sale of surplus energy The Company's energy sales contracts are carried out in the free and re- gulated environments of Brazilian commercialization, being fully registered with CCEE, the agent responsible for accounting and settlement of the entire national integrated system (SIN). Supply of electrical energy Gross revenue Sales of products domestic market 26,810 17,300 Sales of products - foreign market 26,009 19,571 3,131 3,140 853 668 56,803 40,679 Taxes on sales, services and other deductions Net revenue (7,795) (5,296) 49,008 35,383 Services provided (b) Information on geographical areas in which the Company operates The geographical areas are determined based on the location of the cus- tomers. The net revenue of the subsidiaries classified by currency and destination, is as follows: (i) Revenue by destination Brazil United States Peru Argentina 2021 2020 23,905 17,508 5,760 4,740 4,182 2,537 2,668 1,491 183

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