Centrais Eletricas Brasileiras S A : CERTIFICATE MINUTES OF THE NINETY-NINE-ONE MEETING OF THE BOARD OF DIRECTORS OF CENTRAIS ELÉTRICAS BRASILEIRAS S.A. – ELETROBRAS - Form 6-K

CERTIFICATE

MINUTES OF THE NINETY-NINE-ONE MEETING OF THE BOARD OF DIRECTORS OF CENTRAIS ELÉTRICAS BRASILEIRAS S.A. - ELETROBRAS

NIRE 3330034676-7/CNPJ No. 00001180/0001-26

This is to certify, for all due purposes, that the 991st meeting of the Board of Directors of Centrais Elétricas Brasileiras S.A. - Eletrobras ("Company" or "Eletrobras") was installed at 7:00 pm of the twenty-fifth day of september of two thousand and twenty-three. The meeting was held at Eletrobras central office, located at Rua da Quitanda, 196, 25th floor, Centro, Rio de Janeiro - RJ. Mr VICENTE FALCONI CAMPOS (VFC) took over the presidency of the proceedings by videoconference. The Board Members CARLOS EDUARDO RODRIGUES PEREIRA (CRP), FELIPE VILLELA DIAS (FVD), IVAN DE SOUZA MONTEIRO (ISM), MARCELO DE SIQUEIRA FREITAS (MSF), DANIEL ALVES FERREIRA (DAF) and PEDRO BATISTA DE LIMA FILHO (PBL) attended the meeting in person. The The Board Member MARISETE FÁTIMA DADALD PEREIRA (MFP) attended the meeting by videoconference. Board Member Marcelo GASPARINO DA SILVA (MGS) was rightly absent. INSTRUCTION: the supporting material was made available to the Board Memberd through the Governance Portal. INSTALLATION AND DELIBERATION QUORUMS: As stipulated in Article 25, caput, of the Bylaws of Eletrobras, the deliberations of this conclave should occur in the presence of a majority of its members, and its deliberations should be taken, as a general rule, by a majority of those present, except for the cases of qualified quorum retreated in Article 26 of the Bylaws. The meeting was installed with the presence of nine members, in compliance with the minimum five-member installation quorum, and with a minimum quorum for five-member decision-making, except in cases where there is an explicit record of the quorum change present at the time of the determination. The prior declaration of conflict of interest by the Board Member and/or his momentary absence of the conclave imply its subtraction for the purposes of the calculation of the respective minimum quorum.

DEL 146, dated 09.25.2023. Election of Executive Vice-President of Finance and Investor Relations of Eletrobras to complete the unified management deadline by May 1, 2025.

The Board of Directors of Centrais Elétricas Brasileiras S.A. - Eletrobras, in the use of its attributions, and embodied in the rapporteur's exhibition, DECIDED to: 1. To approve the election of EDUARDO HAIAMA, brazilian, in stable union, entrepreneur, bearer of RG No. 10011509-6-IFP-RJ, enrolled in the CPF/me under no. 257.355.548-83, resident and domiciled in Rio de Janeiro, state of Rio de Janeiro, with a commercial address in Rua da Quitanda, 196, 24th floor, Centro, Rio de Janeiro (RJ), 20091-005, for the position of EXECUTIVE VICE PRESIDENT OF FINANCE AND INVESTOR RELATIONS of Eletrobras, in conclusion to the unified management term of the Executive Board (05.01.2023 to 05.01.2025), pursuant to Article 21, Article 31, item XV, and Article 36, both of the Bylaws, without prejudice to the automatic extension referred to in Article 24 of the Bylaws, the effectiveness of the election and the investiture in office should be conditional on the signature of the term of office within 30 (thirty) days following the election, as provided for in Article 149, § 1, of Law No. 6.404/76. 2. To amend the designation of Executive Vice President of Business Strategy and Development of Eletrobras ELIO GIL DE MEIRELLES WOLFF, Brazilian married, Electrical Engineer, holder of identity card no. 052872-7 dispatched by CREA/SC, registered with the CPF under No. 018.861.159-23, residing and domiciled in the city of Rio de Janeiro, State of Rio de Janeiro, with a commercial address in Rua da Quitanda, 196, 24th floor, Centro, Rio de Janeiro, Brazil RJ, 20091-005, to exercise the function of temporary substitute of THE EXECUTIVE VICE PRESIDENT OF FINANCE AND INVESTOR RELATIONS of Eletrobras, until the effective possession of the elected administrator mentioned in item 1 above, pursuant to Article 37, §3 of the Bylaws. 3. To determine that this Decision shall have immediate effect. 4. To determine that the Vice-Presidency of Finance and Investor Relations - VFR, Vice-Presidency of People, Management and Culture - VGC, Vice-Presidency of Innovation, R&D, Digital and IT - VID, Vice-Presidency of Supplies and Services - VSS and Vice-Presidency of Governance Risks and Compliance - VGR, each in its respective scope of action, shall adopt the necessary measures to comply with this Decision.

DEL-146/2023. Classification of Information: Confidential. The classification of the information, and the revision of its classification, including after deliberation, are the duties of the manager of the organizational unit responsible for the matter, pursuant to item 6.2.2 of the EMO-03/2017, approved by RES-453/2017.