Edison: higher unit sales and operating results

Public disclosure required by Consob Resolution No. 11971 of May 14, 1999, as amended. Meeting today, Edison’s Board approves the report on operations in the first half of 2004. Operating earnings before taxes up sharply compared with 2003, rising 53% to €176 million for the Group’s core businesses and more than doubling to €189 million for the Group as a whole. Sales to customers in the deregulated market up 38%.

Milan, September 13, 2004 – The Board of Directors of Edison Spa, meeting today at 
the Company’s Foro Buonaparte headquarters, approved the results of the Group’s 
operations in the first half of 2004.