Phoenix Sky Harbor International Airport has unveiled the new rooftop solar power system that is expected to save it $4.7 million in electricity costs over the next 20 years.
The 5.4-megawatt high efficiency solar power system will generate the equivalent of 51% of the electricity demand at the airport's rental car centre, two East Economy parking garages and toll plaza.
The project was facilitated, in part, by Arizona Public Service Company's (APS) Renewable Energy Incentive Program, which offers financial incentives to customers that help to offset up to 40% of the costs of installing solar energy.
Phoenix Sky Harbor has a solar services agreement with SunPower, which designed, built and operates the system.
The renewable energy credits (RECs) associated with the energy produced by the system will be transferred to APS in fulfillment of the state's renewable energy standard and tariff.
At the airport, SunPower installed SunPower E20 solar panels at three rooftop locations: the Rental Car Center and two buildings that comprise the East Economy Garages. System construction was completed in two months at the end of 2011.
According to estimates provided by the US Environmental Protection Agency, the system is expected to offset the production of more than 5,500 tons of carbon dioxide per year, which is equivalent to removing 19,800 cars from Arizona's roads over the next 20 years.