A worked example: 8 kW in New Hampshire
An 8 kW system — about 19 × 425-watt panels — at New Hampshire's assumed installed cost of $2.80–$3.60 per watt runs roughly $22,400–$28,800 before incentives. At about 1,180 kWh of production per installed kW, it would generate around 9,440 kWh per year. Valuing self-consumed electricity at the assumed $0.28/kWh retail rate and exports conservatively, first-year savings land near $2,178 — a simple payback of roughly 10–13 years.
There is no federal tax credit in that math: the Section 25D residential credit ended for systems installed after December 31, 2025. State or utility incentives, where they exist, would shorten payback from here.
Net metering in New Hampshire
New Hampshire uses a net billing tariff: exports are credited at the full energy and transmission portion of the rate but not all distribution charges — close to, but below, retail.
New Hampshire solar incentives
New Hampshire’s state rebate program for small residential systems has operated with limited funding cycles; check current availability.
What changes a New Hampshire solar quote?
Equipment, roof condition, electrical upgrades, permitting, labor, system size, batteries and financing can all change the installed price. Savings also depend on the specific utility rate, how much solar electricity the home uses directly, and what the utility pays for exports.
Frequently asked questions
How much do solar panels cost in New Hampshire?
Using an assumed installed cost of $2.80–$3.60 per watt, a typical 8 kW home system in New Hampshire costs roughly $22,400–$28,800 before incentives. Smaller and larger systems scale roughly with size, though small systems cost more per watt.
Is solar worth it in New Hampshire?
With New Hampshire electricity around $0.28/kWh and production around 1,180 kWh per installed kW per year, an 8 kW system could save roughly $2,178 in year one, for a simple payback of about 10–13 years with no federal credit. Whether that is "worth it" depends on your rate plan, export compensation, roof, and how long you plan to stay in the home.
Does New Hampshire have net metering?
New Hampshire uses a net billing tariff: exports are credited at the full energy and transmission portion of the rate but not all distribution charges — close to, but below, retail.
What solar incentives does New Hampshire offer in 2026?
New Hampshire’s state rebate program for small residential systems has operated with limited funding cycles; check current availability. Note that the federal Section 25D residential credit ended for systems installed after December 31, 2025, so state, local and utility programs are now the main incentives for purchased systems.
Is there still a federal solar tax credit in New Hampshire?
No — the 30% federal residential clean energy credit (Section 25D) ended for systems installed after December 31, 2025 under the One Big Beautiful Bill Act. Leased or PPA systems may still benefit indirectly because the system owner can claim the commercial 48E credit through 2027.
Use this as a starting point
This page provides broad state assumptions, not a current market survey or binding quote. Before purchasing, verify applicable incentives, utility rules, installer licensing, warranties and financing terms.
Where these numbers come from
State assumptions are informed by public data and reviewed periodically (September 2026):