Is solar worth it in New Hampshire?

With an average payback period of 8.6 years and 25-year savings of $43,375, solar panels in New Hampshire are a solid investment.

How much do solar panels cost in New Hampshire?

The average cost of a 6kW residential solar system in New Hampshire is $15,000 before incentives and tax credits.

How much can I save with solar panels in New Hampshire?

Homeowners in New Hampshire save an average of $1,735 per year with solar panels, totaling approximately $43,375 over 25 years.

Solar Panel ROI in New Hampshire

Is solar worth it in NH?

2.9x ROI Score

8.6 yrs Payback Period

$1,735 Annual Savings

Key Solar Metrics for New Hampshire

Solar Irradiance	4.57 kWh/m²/day
Estimated Annual Production (6kW system)	7,511 kWh
Average Electricity Rate	$0.231/kWh
Average System Cost	$15,000
Estimated Annual Savings	$1,735/year
Payback Period	8.6 years
25-Year Savings	$43,375

New Hampshire vs National Average

Solar Irradiance 4.57 kWh/m²/day -7.9% vs national avg

National Avg Irradiance 5.12 kWh/m²/day baseline

Payback Period 8.6 years Near average

How We Calculated This

Our solar ROI calculations use data from the National Renewable Energy Laboratory (NREL) PVWatts API, which models solar energy production based on location-specific solar irradiance, weather patterns, and panel tilt angles. We assume a standard 6kW residential system with south-facing panels at optimal tilt.

Electricity rates are sourced from the U.S. Energy Information Administration (EIA) and represent state-level residential averages. Annual savings are calculated by multiplying estimated production by the local electricity rate. The payback period divides system cost by annual savings. The ROI score represents total 25-year savings divided by system cost.

These estimates do not include federal tax credits (currently 30% ITC), state incentives, SRECs, or utility rebates, which can significantly reduce the effective payback period. Actual results vary based on roof orientation, shading, local weather, and utility rate changes.

Compare with Nearby States

Maine 8.8 yr payback $1,678/yr savings Vermont 9.9 yr payback $1,521/yr savings Massachusetts 6.8 yr payback $2,229/yr savings

Solar Outlook for New Hampshire

New Hampshire receives 4.57 kWh/m²/day of solar irradiance — 7.9% below the national average. At $0.231/kWh electricity, the 8.6-year payback period represents a solid return on the solar investment.

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