United Nations Global Compact

Since 2019, TAESA has been a signatory to the United Nations Global Compact, an initiative that promotes dialogue between companies, corporations, and UN bodies on social and environmental responsibility policies.

Corporate Integrity

In 2025, the Company joined the Brazil Pact for Business Integrity (Pacto Brasil pela Integridade Empresarial), a commitment aligned with the principles of the OECD and the UN SDGs, focused on promoting a culture of corporate integrity and responsibility. TAESA is also part of the Anti-Corruption Action Platform of the UN Global Compact Network Brazil, which brings together companies committed to collective actions aimed at preventing corruption and strengthening transparency.

Since 2022, the Company has maintained its participation in the Corporate Pact for Integrity and Against Corruption, led by the Ethos Institute, and in the Transparência 100% Movement. In 2025, TAESA established specific targets related to this initiative, with continuous monitoring by the Compliance team. All targets set for the year were fully achieved, strengthening the Company’s Top Management’s commitment to ethics and responsible governance.

During the same period, TAESA made significant progress in its transparency agenda by achieving three of the five targets established for 2030:

• 100% transparency in Taesa’s Compliance and Governance structure;
• 100% transparency regarding the Ethics Channel;
• 100% transparency in interactions with Public Authorities.

Human Rights

Decent Work

Environment

Anti-Corruption

Awards and Recognition

Since 2021, TAESA has been included in B3’s Sustainability Indices – IGPTW, reflecting market recognition of its commitment to people, organizational culture, and an excellent work environment.

In 2025, the Company was certified for the seventh consecutive time with the Great Place to Work (“GPTW”) seal, reinforcing its position among the best companies to work for in Brazil.

In addition, starting in 2025, TAESA joined the IDIVERSA B3, an index that recognizes companies with consistent diversity practices. This inclusion is a significant governance and social responsibility milestone, recognizing that the Company’s gender and racial diversity practices are aligned with the most advanced standards in the Brazilian market.

2025 ANEFAC ESG Best Practices Award

TAESA was recognized as a finalist in the second edition of the National Association of Finance, Administration and Accounting Executives (“ANEFAC”) ESG Best Practices Award, which recognizes organizations with transformative initiatives in business continuity, environmental preservation and social well-being.

TAESA Receives GHG Protocol Silver Seal

In 2025, TAESA received the GHG Protocol Silver Seal. This certification acknowledges that all Scope 1 and Scope 2 emission sources were included in the Company’s greenhouse gas emissions report.

GRI Infra Awards

TAESA won 2nd place at the GRI Infra Awards 2025, in the Biodiversity category, with a project that implemented and managed 50 hectares of Agroforestry Systems (AFS) using native species and initiatives for the rescue and management of stingless bees in municipalities in the state of Rio Grande do Sul. Developed in partnership with farming families, the project combines biodiversity conservation with income generation for local communities.

2025 ANEEL Innovation Award

TAESA was recognized with three awards at the first edition of the 2025 ANEEL Innovation Award. The awards ceremony took place in September, during the Technological Innovation and Energy Efficiency Congress of the Electric Power Sector (Citeenel 2025), the leading innovation event in Brazil’s electric power industry.

Valor 1000 Ranking

TAESA was included in the 2025 edition of the Valor 1000 Ranking, which classifies the largest companies in Brazil based on their financial performance. In this edition, the Company ranked 10th overall and stood out in its sector for its results in EBITDA margin, profitability, and net revenue growth.

2025 Transparency Trophy

In October, the National Association of Finance, Administration and Accounting Executives (“ANEFAC”) awarded TAESA the 2025 Transparency Trophy, one of the most respected and recognized awards in Brazil in the fields of governance and corporate finance.

Valor Innovation Brazil Award 2025

In 2025, TAESA was recognized by the Valor Innovation Brazil Award, being included among the 150 most innovative companies in the country. In its first participation in the survey, the Company ranked 8th in the Electric Power category, highlighting its commitment to innovation management.

A

Abracone Award

In November 2025, Brasnorte Transmissora de Energia S.A., a wholly owned subsidiary of TAESA, received the Abracone Award for Best Regulatory Financial Statements in the Small Company category. The award, granted by the Brazilian Association of Accountants of the Electric Power Sector, was presented during the 41st National Meeting of Sector Accountants.

National Asset Management Award

In September, during the 12th Asset Management Meeting for Electric Power Sector Companies (EGAESE), TAESA received the 8th National Asset Management Award – Eng. Amaury Reigado for the work “The Influence of Aerodrome Protection Zones on Transmission Line Management.” This recognition highlights the Company’s commitment to solutions that combine safety, efficiency and sustainability.

Integrated Management System (“SGIT”) Policy

The SGIT Policy takes on the following commitments:

• We are honest. We respect all people, their lives and diversity.
• We act to prevent accidents and occupational diseases with the engagement of direct and indirect employees.
• We strive for excellence, quality work and the preservation of the environment, reducing pollution and climate impacts.
• We continuously improve our business processes and create value through our assets to increase the satisfaction of our clients and stakeholders.
• We comply with the legal and regulatory requirements, in addition to the standards that comprise our Integrated Management System.

The commitments set forth in the Integrated Management System Policy are translated into the following objectives:

• Disseminating the safety culture to prevent any accidents, providing a healthy and safe work environment.
• Minimizing the environmental impacts resulting from our activities by using natural resources efficiently and responsibly, which reinforces our commitment toward Sustainability.
• Maintaining adequate levels of reliability and availability of transmission assets.
• Being increasingly efficient and increasing the profitability of transmission assets.
• Fostering a culture of Quality, enhancing efficiency in all processes.

Socio-Environmental Reports and Indicators