TEP offers incentives of up to $2000 toward the purchase of a PV system, depending on the system, that can be combined with the $1000 state tax credit and the 30% federal tax credit. This combination of benefits yields and out-of-pocket cost for a $7,000 system of $2,200., which is higher than the present value of the savings using APS rates.  However, both SRP and TEP offer full-retail net metering to their residential customers.  This allows the customer to capture the full retail value for any solar kilowatt-hours sold back to the utility.  For customers located within these service areas, a similar analysis should be conducted to evaluate the net present value of an investment.


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