ISA CTEEP is Brazil’s leading private electricity transmission company. Through its operations and those of its subsidiaries and affiliate companies, the Company operates in 18 Brazilian states (Rio Grande do Sul, Santa Catarina, Paraná, São Paulo, Rio de Janeiro, Minas Gerais, Rondônia, Mato Grosso, Mato Grosso do Sul, Goiás, Tocantins, Maranhão, Piauí, Paraíba, Pernambuco, Alagoas, Espírito Santo and Bahia) and is responsible for approximately 30% of all the electricity transmitted through the National Interconnected System (SIN). The coordination and control of the operations of the Company’s installations and the entire electricity generation and transmission infrastructure in the SIN are the responsibility of the National Electricity System Operator (“ONS”), subject to the inspection and regulations of the National Electricity Agency (“ANEEL”).

Including its own assets, subsidiaries and affiliate companies, the Company has 1,600 employees and an infrastructure with installed transformation capacity of 85,000 MVA, consisting of approximately 23,000 km of transmission lines, 32,000 km of circuits and 139 substations, 136 of which are own substations.

The Company’s shares are listed on Level 1 of B3 S.A. and traded under the tickers TRPL3 and TRPL4. The Company has been adopting B3’s Level 1 special Corporate Governance practices since September 2002, whose commitments include greater transparency in dealings with the market, investors and shareholders, facilitating the monitoring of management’s actions.

The Company is currently a component of the following indexes: Bovespa Index (Ibovespa B3), Broad Brazil Index (IBRA), Dividend Index (IDIV), Electricity Index (IEE), Corporate Governance Index (IGC), Corporate Governance Trade Index (IGCT), MidLarge Cap Index (MLCX), Public Utility Index (UTIL), Brazil 100 Index (IBrX100), Carbon Efficient Index (ICO2), Bovespa Smart Dividend Index (IBSD), Bovespa BR+ Index (IBBR), Bovespa Smart Low Volatility Index (IBLV), Diversity Index (IDVR), Valor Index (IVBX), Corporate Sustainability Index (ISE), B3 Non-State-Owned Bovespa Index (IBEP) and B3 Equal Weight Bovespa Index (IBEW).

Committed to the development of the country’s energy infrastructure, the Company constantly invests in the maintenance and modernization of its network, directly contributing to the expansion of the national transmission system. Since 2016, the Company has won 19 lots in transmission auctions conducted by ANEEL.

Map - Leader in Energy Transmission

(1) Permitted annual revenue (RAP) 2024/2025 cycle, proportional to the participation of ISA ENERGIA BRASIL.
(2) List of ANEEL 2023/2024 modules + Auctions 02/2023 and 01/2024, base date June/23.
(3) Considers the concession contracts of companies 100% controlled by ISA ENERGIA BRASIL and of those jointly controlled.
(4) Weighted by RAP, considers assets in execution/construction, disregards RBSE.

Updated on April 29, 2025.