REN-Redes Energeticas Nacionais

Capital/Financing Update • Apr 9, 2021

Unofficial Translation This is an unofficial translation of the proposal 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.

ANNOUNCEMENT

REN ISSUES 300 MILLION EUROS OF EUROPEAN MEDIUM TERM NOTES UNDER ITS GREEN FINANCE FRAMEWORK

Pursuant to and for the purposes of article 17 of Regulation (EU) number 596/2014 of the European Parliament and of the Council of 16 April 2014, of article 248-A of the Portuguese Securities Code and other applicable regulation, REN – Redes Energéticas Nacionais, S.G.P.S., S.A. ("REN") hereby informs the market and the general public that:

On the date hereof, REN Finance B.V. (a company wholly owned by REN) has agreed the terms of an issue of notes in the Euro Bonds market in an amount of 300 million euros, under the respective EMTN (European Medium Term Notes) programme from REN and REN Finance B.V., with a maturity of 8 years and an interest rate equal to 8 years' mid swap rate, accrued of 60 bps. This bond issue is part of REN´s regular funding policy. This is REN´s inaugural Green Bond and it reflects the alignment of the company´s funding and sustainability strategies.

Lisbon, April 9 th 2021

REN – Redes Energéticas Nacionais, SGPS, S.A.

REN – REDES ENERGÉTICAS NACIONAIS, S.G.P.S., S.A. Listed Company (Sociedade Aberta) Head Office: Avenida Estados Unidos da América, nº 55, 1749-061 Lisbon Share Capital: € 667,191,262 Commercial Registry Office of Lisbon: registry and tax sole number: 503 264 032