REN-Redes Energeticas Nacionais

M&A Activity • Apr 21, 2025

Unofficial Translation

This is an unofficial translation of the communication indicated below and it has been prepared for information purposes only. In the event of any discrepancy between this translation and the Portuguese version, the Portuguese version will prevail.

COMMUNICATION

Under the terms and for the purposes of Article 17 of Regulation (EU) No. 596/2014 of the European Parliament and of the Council of 16 April 2014 and other applicable regulations, REN – Redes Energéticas Nacionais, S.G.P.S., S.A. ("REN") hereby informs the market and the general public that its subsidiary Empresa de Transmisión Eléctrica Transemel S.A. ("Transemel") has, on this date, acquired from Inversiones CMPC S.A. and Empresas CMPC S.A. (together "CMPC") the entire share capital of Transmisora de Energía Nacimiento S.A. ("TENSA"), for a total consideration of 71.4 million U.S. dollars.

TENSA is a Chilean company that owns and operates approximately 190 km of electricity transmission lines, mostly located in the Central-Southern region of Chile. The assets were originally developed to serve the industrial facilities of the CMPC group, a regional leader in the forestry and pulp and paper sectors. Most of TENSA's assets have since been reclassified as regulated assets under the tariff review process for the 2024–2027 period.

With this acquisition, Transemel, REN's Chilean subsidiary responsible for electricity transmission, will operate around 280 km of transmission lines in the country, as well as 5 substations.

The acquisition adheres to the strict financial discipline that guides REN's operations, ensuring sustained profitability and the preservation of credit metrics compatible with maintaining an investment grade rating.

The transaction aligns with REN's strategic plan, which, in addition to an organic growth strategy in Chile, includes selective acquisitions of operational assets of appropriate size and with a riskreturn profile aligned with REN's prudent investment principles and within its area of technical expertise.

The acquisition of TENSA will be fully financed through external debt.

REN – REDES ENERGÉTICAS NACIONAIS, SGPS, S.A.

Lisbon, April 21st, 2025