Solar Payback in New Hampshire
An 8 kW system in New Hampshire pays for itself in roughly 9.6 years — faster than the national average by about 4.2 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
9.6 years
7 of 51 states
Net cost, 8 kW
$24,000
No federal credit in 2026
Electricity rate
25.5¢ / kWh
Peak sun hours
4.2 / day
Averages for New Hampshire (2025 averages, reviewed October 2026). Your own bill and roof will differ — use the full calculator to put your numbers in.
Why New Hampshire lands where it does
New Hampshire has some of the most expensive electricity in the country at 25.5 cents a kilowatt-hour. That is what drives the payback here — every unit the panels produce offsets an expensive one, which matters far more than how much sun the state gets.
At 4.2 peak sun hours a day, production is close to the national average.
Local and utility incentives are not included above, because they change too often for any published list to stay right. If New Hampshire offers a rebate, enter it in the calculator and the payback will shorten accordingly.