Transmissora Aliança de Energia Eletrica S A : Minutes of the Board of Directors’ Meeting held on October 6, 2021

TRANSMISSORA ALIANÇA DE ENERGIA ELÉTRICA S.A.

NIRE 33.3.0027843-5

CNPJ (EIN) 07.859.971/0001-30

Publicly-Held Company

DRAFT OF MINUTES OF BOARD OF DIRECTORS' ORDINARY MEETING

HELD ON OCTOBER 06, 2021

DATE, TIME AND PLACE: The meeting was held on October 6, 2021, at 10:00 am, exceptionally at Avenida das Américas, nº 2480, Business Center do Lead Américas, Barra da Tijuca, Rio de Janeiro.

ATTENDANCE AND CALL NOTICE: The meeting was duly convened, with the attendance of all the Directors of Transmissora Aliança de Energia Elétrica S.A. ("TAESA" or "Company"), Messrs.: Reynaldo Passanezi Filho, José Reinaldo Magalhães, Reinaldo Le Grazie, Jaime Leôncio Singer, José João Abdalla Filho, Luis Augusto Barcelos Barbosa, André Fernandes Berenguer, Bernardo Vargas Gibsone, César Augusto Ramírez Rojas, Fernando Augusto Rojas Pinto, Fernando Bunker Gentil, Celso Maia de Barros and Hermes Jorge Chipp. The meeting was also attended (invited by the Board) by the Chief Executive Officer and Legal and Regulatory Officer, Mr. André Augusto Telles Moreira, the Chief Technical, Mr. Marco Antônio Resende Faria, the CFO and Investor Relations Officer, Sr. Erik da Costa Breyer, Chief New Business and Ownership Interest Management Officer, Mr. Fabio Antunes Fernandes, the Chief Implementation Officer, Mr. Luis Alessandro Alves, and the specialist from the Company's Corporate Governance area, Ms. Mariana Sant'Anna Magalhães.

CHAIRMAN AND SECRETARY: Mr. Reynaldo Passanezi Filho presided over the meeting as Chairman, and invited me, Mariana Sant'Anna Magalhães, to serve as Secretary. Once the meeting was installed, all members were present and the meeting was properly installed, the Board Members unanimously approved the drawing up of these minutes in a summary format.

MEETING AGENDA: (1) Proposal for the distribution of dividends of the following

companies: Empresa Amazonense de Transmissão de Energia S.A. ("EATE"), ECTE - Empresa Catarinense de Transmissão de Energia S.A. ("ECTE"), EDTE - Empresa Diamantina de Transmissão de Energia S.A. ("EDTE"), Empresa Norte de Transmissão de Energia S.A. ("ENTE"), Empresa Regional de Transmissão de Energia S.A. ("ERTE"), ESDE - Empresa Santos Dumont de Energia S.A. ("ESDE"), Empresa Paraense de Transmissão de Energia S.A. ("ETEP"), ETSE - Empresa de Transmissão Serrana S.A. ("ETSE"), Companhia Transirapé de Transmissão ("Transirapé"), Companhia

Transudeste de Transmissão ("Transudeste") and Companhia Transleste de Transmissão ("Transleste"), due to the profit reserve for the year and the respective required voting guidance; (2) Proposal for the signing of a contractual amendment between the companies Empresa Sudeste de Transmissão de Energia S.A. ("ESTE") and Nexans Brasil S.A. and respective required voting guidance; (3) Regularization of the operation and maintenance ("O&M") service currently provided by Companhia Estadual de Transmissão de Energia Elétrica - CEEE-T to Empresa de Transmissão do Alto Uruguai S.A. ("ETAU") - Installations at SE Lagoa Vermelha 2 and the 230kV Barra Grande - Lagoa Vermelha 2 and Lagoa Vermelha 2 - Santa Marta TLs and their respective line entries in the substations; (4) Information: Contracts with EPC contractors and next steps; (5) Information: Status of the Projects of Interligação Elétrica Aimorés S.A. ("Aimorés") and Interligação Elétrica Paraguaçu S.A. ("Paraguaçu") and report of the respective Executive Board of AIE; (6) Information: Progress of the Company's projects under construction and the impacts of COVID-19;(7) Information: TAESA - Investor Day; (8) Outside the agenda: Proposal for the execution of the 4th addendum to the contract signed between the companies Interligação Elétrica Aimorés S.A. ("Aimorés") and Interligação Elétrica Paraguaçu S.A. ("Paraguaçu") and SGS Engenharia to inspect the works, as well as the execution of the 1st addendum to the contract signed between the company Aimorés and Construtora Ferreira Grillo and the respective required voting guidance; (9) Outside the agenda: Proposal for the execution of the contract for the provision of services for the laying of cables for a 55.72km stretch between the company Paraguaçu and Sadesul Projetos e Construções and respective required voting guidance; (10) Outside the agenda: Proposal for the signing of an amendment between Aimorés and Sae Towers and the respective required voting guidance; and (11) Outside the agenda: Proposal for the signing of an amendment between Paraguaçu and Sae Towers and respective required voting guidance.

RESOLUTIONS TAKEN: When the Board Members were asked about having any conflict of interest with the topics on the agenda, they unanimously denied. Then, the members of the Board of Directors resolved the following:

1. As decided by the Company's Executive Board at a meeting held on September 8,
   2021 and recommendation of the Finance Committee at a meeting held on September 17, 2021, by unanimous vote of the Board Members present, declare a favorable vote at the General Meetings of the companies EATE, ECTE, EDTE, ENTE, ERTE, ESDE, ETEP, ETSE, TRANSIRAPÉ, TRANSLESTE and TRANSUDESTE that resolve on the distribution of dividends to shareholders, referring to part of the balance of the profit retention reserve account, in the total amount of R$ 113,313,025.08, which may occur in installments, according to the availability of cash, not exceeding the year 2021. The support material will be filed at the Company's headquarters.

1. As decided by the Company's Executive Board at a meeting held on September 14,
   2021 and recommendation of the Implementation and New Business Committee at a meeting held on September 17, 2021, by unanimous vote of the Board Members present, to guide a favorable vote at the meeting of the Board of Directors of ESTE that resolves on the amendment to the contract for the supply of aluminum cables entered into with Nexans Brasil S.A., to record the new quantities and scope under the terms and amounts contained in the supporting material filed at the Company's headquarters.
2. As decided by the Company's Executive Board at a meeting held on September 16, 2021 and following the recommendation of the Strategy, Governance and Human Resources Committee on September 17, 2021, by unanimous vote of the attending Board Members:
   (I) a) to approve the provision of operation and maintenance services for the ETAU facilities, at the Lagoa Vermelha 2 substation and the 230kV Barra Grande - Lagoa Vermelha 2 and Lagoa Vermelha 2 - Santa Marta transmission lines, and their respective line entries in the substations, by TAESA, under the terms of the best proposal presented in the bidding process and compliance with all the technical scope, therefore observing the best interest of ETAU and what the current legislation and regulations of the ANEEL provides for, or; b) alternatively, guide the favorable vote in the Board of Directors and General Meeting of ETAU that decide on the engagement of CEEE-T to provide these services, if a similar proposal is presented, in compliance with the Shareholders'
   Agreement, since it will be configured the commutativity necessary for transactions with related parties.

1. guide the vote of TAESA and its representatives in the Board of Directors of ETAU, in the Previous Shareholders' Meeting of ETAU and in the Shareholders' Meeting of
   ETAU on the decision to contract item (I) (a) above, with the abstention of TAESA and its representatives; and

1. guide the vote of TAESA and its representatives in the Board of Directors of ETAU, in the Previous Shareholders' Meeting of ETAU and in the Shareholders' Meeting of ETAU on the decision to contract item (I) above to conflict with the vote of CEEE-T and its representatives, if necessary. The support material will be filed at the Company's headquarters.

1. For information purposes, contracts with EPC contractors were presented - actions taken and next steps. The support material will be filed at the Company's headquarters.
2. The matter was removed from the agenda at the request of the proposing area.

1. For information purposes, the report on the progress of the projects under construction of the Company and impacts of COVID-19 in the construction was presented. The support material will be filed at the Company's headquarters.
2. For information purposes, information about the TAESA - Investor Day event was presented. The support material will be filed at the Company's headquarters.
3. As an off-the-schedule item, on an urgent basis and in view of the performance of the members of the Board of Directors in the best interest of the Company, pursuant to the resolution of the Company's Executive Board at a meeting held on September 29, 2021 and recommendation of the Implementation and New Business Committee at a meeting held on October 1, 2021, by unanimous vote of the attending Board Members:
   (i) guide a favorable vote at the meetings of the Boards of Directors of the Companies Aimorés and Paraguaçu that resolve on the execution, by Paraguaçu together with Aimorés, with the contracted company SGS Enger Engenharia Ltda., of the 4th amendment to the contract for the provision of inspection services for IEA/IEP-002-2019 works, signed on May 13, 2019, under the terms and amounts contained in the supporting material filed at the Company's headquarters; and
   (ii) guide a favorable vote at the meeting of the Board of Directors of Aimorés that resolves on the execution of the 1st amendment to contract IEA-88/2021 with the company Construtora Ferreira Grillo Ltda., under the terms and amounts contained in the supporting material filed at the Company's headquarters.
4. As an outside the agenda item, on an urgent basis and in view of the performance of the members of the Board of Directors and in the best interest of the Company, as decided by the Company's Executive Board at a meeting held on September 29, 2021 and as recommended by the Implementation and New Business Committee at a meeting held on October 01, 2021, by unanimous vote of the Board Members present, guide the favorable vote at the meeting of the Board of Directors of Paraguaçu to resolve on the execution of a contract for the provision of cable launching services and complementary services in a 55.72 km stretch of the 500 kV CS Poções III - Padre Paraíso transmission line, under a fixed price contract, with the company Sadesul Projetos e Construções Ltda., under the terms and amounts contained in the supporting material filed at the Company's headquarters.
5. As an off-the-schedule item, on an urgent basis and in view of the performance of the members of the Board of Directors and in the best interest of the Company, as decided by the Company's Executive Board at a meeting held on June 29, 2021 and as recommended by the Implementation and New Business Committee at a meeting held on

October 01, 2021, by unanimous vote of the Board Members present, guide the favorable vote at the meeting of the Board of Directors of Aimorés to resolve on the execution, with Sae Towers Brasil Torres de Transmissão Ltda., of the 8th amendment to EPC contract No. IEP-Dt-003/2017, under the terms and amounts contained in the support material filed at the Company's headquarters.

1. As an off-the-schedule item, on an urgent basis and in view of the performance of the members of the Board of Directors and in the best interest of the Company, as decided by the Company's Executive Board at a meeting held on June 29, 2021 and as recommended by the Implementation and New Business Committee at a meeting held on October 01, 2021, by unanimous vote of the Board Members present, guide the favorable vote at the meeting of the Board of Directors of Paraguaçu to resolve on the execution, with Sae Towers Brasil Torres de Transmissão Ltda., of the 8th amendment to EPC contract No. IEP-Dt-003/2017, under the terms and amounts contained in the support material filed at the Company's headquarters.

OTHER MATTERS OF INTEREST TO THE COMPANY: Mr. Reynaldo Passanezi Filho, Chairman of the Board of Directors, together with the other Board Members, upon the resignation of Mr. Bernardo Vargas Gibsone to the position of Chief Executive Officer of Interconexión Eléctrica S.A. E.S.P., recognized the Company's Board of Directors for its trajectory and contribution, highlighting its character, the rich interaction and the unique exchange of experiences.

At the end of the meeting, an informative video on the construction of the Janaúba project and its entry into operation was presented to the members of the Board of Directors.

CLOSING: There being no further issuances to be discussed, the meeting was adjourned, and these minutes were drawn up, read and found to be in conformity, and approved and signed by all members of the Board of Directors which voted in such meeting.

Rio de Janeiro, October 06, 2021.

_________________________________	_________________________________
Reynaldo Passanezi Filho	José Reinaldo Magalhães
_________________________________	_________________________________
Reinaldo Le Grazie	Jaime Leôncio Singer