For more than 120 years, Pinnacle West and our affiliates have provided energy and energy-related products to people and businesses throughout Arizona. Based in Phoenix, Pinnacle West has consolidated assets of about $11 billion.

Our largest affiliate, Arizona Public Service (APS), generates, sells and delivers electricity and energy-related products and services. APS serves more than a million customers in 11 of Arizona’s 15 counties, and is the operator and co-owner of the Palo Verde Nuclear Generating Station®  – a primary source of electricity for the Southwest.

Our other affiliates include SunCor Development Company, a developer of residential, commercial and industrial real estate; APS Energy Services, a retail energy service provider; and El Dorado Investment Company, a venture capital and investment firm.

Pinnacle West...

• is in Standard and Poor’s 500 index and is traded on the New York Stock Exchange under the symbol: PNW
• subsidiary APS is the second fastest growing electric utility in the U.S. over the last five years
• is headquartered in Phoenix, Arizona – one of the fastest growing regions in the United States
• assets include approximately 6,000 megawatts of plant generation capacity
• subsidiary APS is a leader in the development of solar technology
• earned the top rating - AAA - from Innovest Strategic Value Advisors for our environmental performance