APS ENERGY SERVICES

APS Energy Services Company, Inc. (APS Energy Services) is the full-service energy performance contracting subsidiary of Pinnacle West Capital Corporation (NYSE: PNW)and provides self-funding innovative energy conservation and renewable solutions designed to manage risk and achieve the triple bottom line. Incorporated in 1998 and as part of the Pinnacle West family, APS Energy Services enjoys a strong relationship with the State of Arizona and has successfully implemented energy conservation and renewable energy projects for State public agencies, including K-12 School Districts, Municipalities and Higher Education Institutions.