Solar Panel Cost in New Hampshire (2026)
Developing incentives Average installed cost: $2.95/watt · Typical payback: 10-13 years
New Hampshire solar cost breakdown
| Metric | New Hampshire |
|---|---|
| Cost per watt (low–avg–high) | $2.65 – $2.95 – $3.30 |
| 8.6 kW system cost (before incentives) | $22,790 – $28,380 |
| Average residential electricity rate | $0.23/kWh |
| Average peak sun hours/day | 4.0 |
| Typical payback period | 10–13 years |
| Federal tax credit (cash/loan, 2026) | Not available (expired 12/31/2025) |
New Hampshire-specific incentives
New Hampshire has group net metering and modest state rebates that vary by budget year, but incentive levels are noticeably smaller than neighboring Massachusetts, which is why border-town comparisons often favor the Massachusetts side.
Quick facts
Cities in New Hampshire
Frequently asked questions
How much do solar panels cost in New Hampshire?
As of 2026, solar panels in New Hampshire average $2.95 per watt installed, typically ranging $2.65-$3.30/W depending on system size, roof complexity, and equipment tier. A common 8.6 kW residential system runs roughly $22,790-$28,380 before any remaining state incentive.
Is there a state solar tax credit in New Hampshire?
New Hampshire has group net metering and modest state rebates that vary by budget year, but incentive levels are noticeably smaller than neighboring Massachusetts, which is why border-town comparisons often favor the Massachusetts side.
What's the typical payback period for solar in New Hampshire?
Most New Hampshire homeowners see a payback period of 10-13 years based on current electricity rates and remaining incentives, since the federal 30% tax credit no longer applies to cash or loan purchases in 2026.
Does the federal solar tax credit still apply here?
No — the 30% federal Residential Clean Energy Credit (Section 25D) expired for cash and loan purchases on December 31, 2025. It only remains available indirectly through solar leases and PPAs, where the financing company claims a separate commercial credit.
Not financial, tax, or legal advice. Figures on this page are 2026 estimates based on industry aggregator data (EnergySage marketplace medians, SEIA/Wood Mackenzie market insight, and regional installer data) and are provided for general informational and comparison purposes only. Actual pricing, incentive eligibility, and payback periods depend on your specific roof, usage, equipment, and local program rules. Confirm current incentive details at dsireusa.org and consult a licensed tax professional and local installers before making a purchase decision.