Pinnacle West Capital Corporation is the holding company for Arizona’s largest utility, Arizona Public Service.
The company traces its roots to the 1884 formation of Phoenix Light and Fuel Company to provide electricity and heat to Phoenix, which was three years old at the time.
In 1925 the company was bought by American Power and Light, but became and independent company again in 1945 under the name Arizona Public Service Company.
Arizona Public Service Company reorganized in 1985 into a holding company structure.
Today Arizona Public Service transmits and distributes electricity to 1.2 million residential, commercial, and industrial customers.
Pinnacle West Capital Corporation is traded publicly on the New York Stock Exchange under the ticker symbol PNW, is a member of the S&P 500, is #667 in the Fortune 1000, has 6,443 employees, and had $3.46 billion in revenue in 2013.