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New Hampshire solar at a glance
Estimates use the inputs above and the assumptions in our methodology: Eversource nets exports against use over each month, so most exports offset the retail rate; surplus left over earns 19.96¢ per kWh. Other New Hampshire utilities differ. Prices rise 2.5% a year; panels lose 0.5% a year.
Solar cost in New Hampshire by system size
Same assumptions as the typical home above; only the system size changes. Prices are the state median before incentives and include the incentives our calculator applies by default in New Hampshire.
| System | Price before incentives[3] | After incentives | kWh in year 1[2] | Year-1 savings[4][5] | Payback (years) |
|---|---|---|---|---|---|
| 4 kW | $14,800 | $14,800 | 5,040 | $1,360 | 10 |
| 6 kW | $22,200 | $22,200 | 7,550 | $2,000 | 10 |
| 8 kW | $29,600 | $29,600 | 10,070 | $2,000 | 13 |
| 10 kW | $37,000 | $37,000 | 12,590 | $2,000 | 15 |
| 12 kW | $44,400 | $44,400 | 15,110 | $2,000 | 18 |
Incentives that lower the price in New Hampshire
Business credit for leased and PPA systems (48E)
Claimed by the system owner, not the homeowner; solar must begin construction by July 4, 2026 or be in service by December 31, 2027[6]
If a company owns the panels on your roof (a lease or power purchase agreement), that company may claim the business clean electricity investment credit and can reflect it in your price. You cannot claim it yourself.
- Who
- Third-party-owned systems (leases and PPAs). Ask the provider whether the price assumes this credit.
- Deadline
- December 31, 2027
- Checked
- November 5, 2026
All New Hampshire incentives, including utility and local programs →
How New Hampshire utilities credit your solar
Under NEM 2.0 (PUC Order 26,029, retained by Order 27,074 in Nov 2024), monthly net exports from systems up to 100 kW earn a bill credit equal to default energy service plus transmission plus 25% of distribution charges, which is below the full retail rate. The net meter is read monthly.[5]
We have not added every New Hampshire utility yet, so the estimates on this page use the state-level rule: Eversource nets exports against use over each month, so most exports offset the retail rate; surplus left over earns 19.96¢ per kWh. Other New Hampshire utilities differ.[5]
FAQ
Frequently asked questions
How much do solar panels cost in New Hampshire?
How long does solar take to pay for itself in New Hampshire?
Is there still a federal solar tax credit?
Not for homeowners who buy. The Federal Residential Clean Energy Credit (25D)[7] does not apply to systems whose installation is completed after December 31, 2025. Leased and PPA systems are different: the company that owns the system may still claim a business credit.
sources
[ 7 ]Every number on this page links to one of these sources. Dates show when we last checked each one.
- EIA Electric Sales, Revenue, and Average Price 2024, Table 5A: Residential average monthly bill by stateeia.gov · checked Nov 5, 2026
- NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)pvwatts.nlr.gov · checked Nov 5, 2026
- U.S. Distributed Solar and Storage 2026 Data Update (Barbose, Darghouth, O'Shaughnessy, Forrester), Berkeley Labeta-publications.lbl.gov · checked Nov 5, 2026
- EIA Electric Power Monthly, Table 5.6.B: Average price of electricity by state, year-to-date (August 2026, preliminary)eia.gov · checked Nov 5, 2026
- New Hampshire Net Metering - Eversourceeversource.com · checked Nov 5, 2026
- Public Law 119-21 - Sec. 70513(a) and (g)(5) (48E); Sec. 70512(a) and (l)(4) (45Y)govinfo.gov · checked Nov 5, 2026
- IRS FS-2025-05: FAQs for modification of sections 25C, 25D, 25E, 30C, 30D, 45L, 45W, and 179D under Public Law 119-21 (OBBB)irs.gov · checked Nov 5, 2026
State data last re-checked November 5, 2026.
Change log
- Monthly output per kW in Manchester updated to [76.8, 93.2, 121.3, 123.5, 129.2, 122.6, 135.6, 124.4, 110.0, 86.6, 71.4, 64.0] kWh/kW/month (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).
- Average solar radiation on the panels in Manchester updated to 4.58 kWh/m2/day (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).
- Solar output per kW in New Hampshire (PVWatts, Manchester) updated to 1258.5 kWh/kW/yr (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).
- What the rule says updated to “Each kilowatt hour of Net Sales will earn a monetary bill credit equal to the sum of the Default Energy Service charge” (New Hampshire Net Metering - Eversource).