APS said that the energy must come from projects with capacity between 2MW and 15MW with a commercial operation date by December 31, 2012, for solar and wind projects and by December 31, 2013, for all other technologies. Eligible resources include biogas, landfill gas, biomass, geothermal, solar, wind, hybrid wind and certain hydropower technologies.

The solicitation is part of APS’s small generation program, which is designed to accelerate the number of small renewable generation projects by streamlining the proposal and contract procedures.

Energy from this proposal will go toward meeting the renewable energy standard set by the Arizona Corporation Commission in 2006, the company said.

APS serves about 1.1 million customers in 11 counties of the state. With headquarters in Phoenix, APS is said to be the largest principal of Pinnacle West Capital.