PWP offers two types of solar rebates, a lump sum paid upon installation and a performance-based incentive paid over two years. Customers with larger systems (over 100 kW-AC) are eligible for the performance-based incentive only. Customers with systems of 100 kW-AC or less can choose either rebate. PWP reserves the right to make changes to the program at any time based on available funds. If you have any questions, please call (626) 744-7311 during regular business hours. Following are the current rates. All purchase power agreements (PPAs), except residential leases, qualify for the commercial rate.
Aug. 1, 2016
Lump Sum ($/Watt)
Eligible PV System Size
Lump Sum Rebates
You'll receive two annual payments for the first two years after installation and inspection approval based on actual metered kWh output of your solar PV system.
100 kW-CEC-AC to1,000 kW-CEC-AC
Customers with solar PV systems up to 100 kW CEC-AC may choose a one-time, lump sum payment after the installation has been completed and approved. The lump sum rebate amount is determined with this formula: CEC-AC Rating x Design Factor x Per-Watt Payment Rate = Rebate Amount For example, for a residential customer installing a 5 kW CEC-AC system, the calculation would be: 5,000 Watts CEC-AC x 95% Design Factor x $0.85/watt = $4,037.50 Rebate
Customers with PV systems from 1 to 1000 kW CEC-AC are eligible for PWP’s performance-based rebate, which is a flat cents-per-kWh payment based on actual metered energy. (Systems larger than 100 kW CEC-AC qualify for the performance-based rebate only.) The incentive rate remains fixed over two annual payments. The performance-based rebate amount is determined with this formula: Annual Measured Output (kWh) x Per Kilowatt Hour Payment Rate = Rebate Amount For example, for a commercial customer installing a 200 kW CEC-AC system, the calculation would be:
Metered Output (kWh)
Current PBI Rate
Total PBI Payment:
YOUR SOLAR CONTRACTOR CAN HELP YOU DETERMINE THESE NUMBERS AND ESTIMATE YOUR POTENTIAL REBATE. “CEC-AC Rating" is the California Energy Commission's standard for determining a solar system's AC wattage. It is based on system performance, not capacity, which is influenced by factors such as shading, orientation, system size, location and angle. The “Design Factor” is the ratio of the proposed and optimal system summer output.