Rome, 15 September 2009 – Acea SpA announces that the General Meeting ofShareholders held in Rome today has elected three Directors, Luigi Pelaggi, Andrea Peruzy and Pierre Clavel, previously co-opted on to the Board by the Company pursuant to art. 2386 of the Italian Civil Code.

The following meeting of the Board of Acea SpA, chaired by Giancarlo Cremonesi, thenconfirmed the positions previously held by Pelaggi, Peruzy and Clavel on the variousBoard Committees and Corporate Bodies: Pelaggi on the Remuneration Committee,Peruzy on the Ethics Committee and Supervisory Board and Clavel on the EthicsCommittee.

At the same meeting, the CEO of Acea SpA, Marco Staderini, presented the guidelinesfor updating the 2010-2012 Business Plan to the Board of Directors. In order toexamine the major issues involved appropriately, the Board voted to meet again on October 15.