serves more than 1.3 million homes and businesses in 11 of Arizona’s 15 counties, and is a
leader in delivering affordable, clean and reliable energy in the Southwest. The company is committed to serving customers with 100% clean power by 2050. As owner and operator of Palo
Verde Generating Station
, the nation’s largest producer of carbon-free electricity, and with one
of the country’s most substantial renewable energy portfolios, APS’s current energy mix is 50%
clean. With headquarters in Phoenix, APS is the principal subsidiary of Pinnacle West Capital
Corp. (NYSE: PNW).