Through the Environmental Portfolio Standard (EPS) Credit Purchase Program, Arizona Public Service (APS) offers customers who install photovoltaic and solar hot water systems the opportunity to sell the credits associated with the energy generated to APS.
For grid-tied photovoltaic systems of any size, the credit amount is $4/Watt-DC, up to 50% of installed cost. APS is purchasing solar credits to help the company meet the state's Environmental Portfolio Standard.