PHOENIX- Pinnacle West Capital Corporation’s (NYSE: PNW) board of directors today declared a quarterly dividend of $0.50 per share of common stock, payable on June 1, 2006, to shareholders of record on May 1, 2006.

Pinnacle West is a Phoenix-based company with consolidated assets of about $11 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.

Media:
Alan Bunnell, (602) 250-3376

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