PHOENIX – Pinnacle West Capital Corporation’s (NYSE: PNW) board of directors today declared a quarterly dividend of $0.425 per share of common stock, payable on June 1, 2003, to shareholders of record on May 1, 2003.

Pinnacle West’s board most recently increased the dividend in October 2002 by approximately 6.3 percent or $0.10 per share on an annual basis. The board’s action resulted in an indicated annual dividend of $1.70 per share or $0.425 per share quarterly and represented the ninth consecutive annual increase.

Earnings Release, Webcast and Conference Call

Pinnacle West plans to release its 2003 first quarter earnings on Friday, May 2, 2003. That same day at 12 noon (ET), the Company invites interested parties to listen to the live webcast of management’s conference call to discuss earnings and recent developments. The webcast can be accessed at http://www.pinnaclewest.com/investors/presentations/default.html and will be available for replay on the website for 30 days. To access the live conference call by telephone, dial (877) 356-3961 and enter reservation number 9833252. A replay of the call also will be available until 12 midnight (ET), Friday, May 9, 2003, by calling (800) 642-1687 in the U.S. and Canada or (706) 645-9291 internationally and entering reservation number 9833252.

Pinnacle West is a Phoenix-based company with consolidated assets of approximately $9 billion. Through its subsidiaries, the company generates, sells and delivers electricity and sells energy-related products and services to retail and wholesale customers in the western United States. It also develops residential, commercial, and industrial real estate projects.

Contacts

Media:
Alan Bunnell, (602) 250-3376

Analyst:
Rebecca Hickman, (602) 250-5668
Lisa Malagon, (602) 250-5671