Press release

The Board of Directors of Acea, which met today, has started the examination of the binding offer received from ENI Plenitude, on 4 June 2025, concerning the entire share capital of the subsidiary Acea Energia S.p.A. (100% Acea).

The offer is being evaluated as part of the strategic path of asset rationalisation and rotation (asset rotation) launched about a year and a half ago with the launch of the “Green Diligent Growth” Industrial Plan, aimed at strengthening the Group's industrial positioning in sectors with the greatest potential for development and sustainability. During this path, Acea achieved significant results in terms of industrial and geographical growth, with particular reference

• to the water sector:
- through the launch of strategic investment projects by exploiting the opportunities offered by the NRRP (the Acquedotto Marcio and Ottavia-Trionfale projects), in addition to the plan to “double” the Peschiera aqueduct, the most significant infrastructure investment ever made by the company in the sector and currently among the largest in Europe
- territorial expansion, with entry into new geographical areas, such as Sicily and Liguria, thanks to the awarding of important concessions;

• to the environmental sector, with the enhancement of plant equipment through the start of works for the construction of the fourth line of the San Vittore waste-to-energy plant and the recent awarding of the project for the new waste-to-energy plant in Rome, infrastructures that will significantly strengthen the Group's presence in this strategic sector;

• the electricity and public lighting sector, with the activation of investments to modernise the distribution network in Rome and the development of projects aimed at improving the efficiency and quality of the public lighting service.

During the meeting, highlighted was also made to the establishment of a new Group company in the gas sector, aimed at consolidating and developing Acea's industrial presence in this strategic segment as well, with the goal of seizing future growth opportunities and further strengthening its competitive position in the domestic market.

The Board also paid special attention to the protection of employment levels, considered a central element in the evaluation of any possible extraordinary operation.

Acea's Board of Directors will meet again shortly to make the appropriate decisions regarding this transaction.