April 17, 2008 April 17, 2008 ROSEMEAD, Calif., April 17, 2008— Edison International (NYSE:EIX) has rescheduled the date for its conference call to discuss first quarter 2008 financial results to Thursday, May 8, 2008, one day earlier than previously announced. Two-way participation in the telephone call is limited to financial analysts and investors, while other interested parties are invited to participate in a simultaneous webcast on the company's web site. Additional information presented during the conference call will be available at the web site address shown below. Subject: First Quarter 2008 Financial Results When: Thursday, May 8, 2008 Time: 8:00 a.m. (Pacific time) Numbers: (800) 356-8584 - for callers in the U.S. (850) 429-1225 - for international callers Call ID#: 11600 Web site: www.edison.com In addition to the live simulcast, telephone replays will be available through Thursday, May 15, 2008, at the following numbers: (877) 693-4277 - for callers in the U.S. (402) 220-0042 - for international callers PIN Number: 11601 Media Relations: Charles Coleman, (626) 302-7982www.edisonnews.com Investor Relations: Scott Cunningham, (626) 302-2540www.edisoninvestor.com # # # Edison International, through its subsidiaries, is a generator and distributor of electric power and an investor in infrastructure and energy assets, including renewable energy. Headquartered in Rosemead, California, Edison International is the parent company of Southern California Edison, the largest electric utility in California, and Edison Mission Group, a competitive power generation business and parent company to Edison Mission Energy and Edison Capital.