APS is looking for new sources of renewable energy that cumulatively can provide 45,000 megawatthours annually. Eligible resources include biogas, landfill gas, biomass, geothermal, solar, wind, hybrid wind and certain hydropower technologies. The projects must employ commercially proven technologies and provide at least 1,500 megawatthours per year. The actual number of projects selected and the total energy received will depend on several factors, including the cost to customers.

Interested parties are encouraged to participate in a bidder's conference on April 16, 2009. Additional information about the conference and the RFP is available online at www.aps.com/rfp.

The Small Generation Pilot Program was created to increase the number of successful small renewable generation projects. The new RFP helps developers of these projects by streamlining the proposal and contract procedures.

The small generation RFP was included in APS' 2009 Renewable Energy Standard Implementation Plan previously approved by the Arizona Corporation Commission.

APS, Arizona's largest and longest-serving electricity utility, serves about 1.1 million customers in 11 of the state's 15 counties. In 2008, APS won its second Edison Award in recognition of innovative leadership and operational excellence in the electric industry. Given annually by the Edison Electric Institute, the Edison Award is considered the industry's most prestigious honor. With headquarters in Phoenix, APS is the principal subsidiary of Pinnacle West Capital Corp. (NYSE: PNW)