REN Redes Energeticas Nacionais SGPS S A : Accompanying letter for the exercise of the vote by correspondence

Accompanying letter for the exercise of the vote by correspondence 1

To the

Chairman of the General Meeting Board of

REN - Redes Energéticas Nacionais, SGPS, S.A. Av. Estados Unidos da América, no. 55 1749-061 Lisbon

AG2024@ren.pt

Subject: General Meeting on May 9th, 2024

___________________2, bearer of the identification document ___________ , issued on _________ by

__________, holder of _______________ ordinary shares of REN - Redes Energéticas Nacionais, SGPS,

S.A. (REN), hereby submits the ballot paper for the exercise of the vote by correspondence regarding the agenda of the General Meeting of REN to be held on May 9th, 2024.

Yours faithfully,

____________________, ______________/____/________3

______________________________________4

1. This notice shall be received by the Chairman of the General Meeting Board of REN until 11:59 pm (GMT) of May 7th, 2024, accompanied by the vote by correspondence ballot paper enclosed, duly filled out and signed.
2. Full name (natural persons) or full corporate name (legal persons), in capital letters.

3Place and date.

4Signature as written in the identification card/passport (natural persons) / certified signature(s) of the representative(s), name(s), capacity and company stamp (legal persons).