Solar Payback in Arizona
An 8 kW system in Arizona pays for itself in roughly 11.0 years — faster than the national average by about 2.9 years.
The 30% federal residential solar credit (Section 25D) ended for expenditures after 31 December 2025. Homeowners buying in 2026 receive no federal credit. Businesses are treated differently under Section 48E.
Payback period
11.0 years
10 of 51 states
Net cost, 8 kW
$24,000
No federal credit in 2026
Electricity rate
14.4¢ / kWh
Peak sun hours
6.5 / day
Averages for Arizona (2025 averages, reviewed October 2026). Your own bill and roof will differ — use the full calculator to put your numbers in.
Why Arizona lands where it does
Arizona sits near the middle on electricity price at 14.4 cents a kilowatt-hour, so payback is driven about equally by the rate and by the 6.5 peak sun hours the state averages.
The sunshine genuinely helps: 6.5 peak sun hours a day is among the best in the country, so a given system produces noticeably more here than the same panels further north.
Local and utility incentives are not included above, because they change too often for any published list to stay right. If Arizona offers a rebate, enter it in the calculator and the payback will shorten accordingly.