REN-Redes Energeticas Nacionais

Legal Proceedings Report • Jan 10, 2019

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.

COMMUNICATION

In accordance with and for the purposes of article 17 of the Regulation (EU) Nr. 596/2014, of the European Parliament and of the Council, of 16 April 2014, of article 248A of the Portuguese Securities Code and other applicable regulations, REN – Redes Energéticas Nacionais, SGPS, S.A. ("REN") hereby informs the market and the public of the following:

Today, at 12:30 p.m., REN was notified of the decision of the Constitutional Court that analysed the appeal filled by REN Armazenagem S.A. towards the declaration of illegality of the collection of the Extraordinary Contribution on the Energy Sector (ECES) in 2014. The Constitutional Court ruled against the unconstitutionality of the applicable rules of the legal framework of ECES approved by Law 83-C/2013 of 31 December.

The Constitutional Court limited the scope of the appeal to the ECES in force in 2014 and did not analyse the constitutionality of the rules that govern ECES for the following years, i.e. from 2015 to 2019. For this reason, REN considers that the decision now notified cannot be extended to the following years.

REN Armazenagem, as other REN's Group companies, has paid the ECES in the relevant years and has no amount in debt towards the Tax Authorities.

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

Lisbon, January 10th 2019