Solar Panel ROI in New Hampshire

· Source: NREL PVWatts

Is solar worth it in NH? Here's what the data says.

2.9x ROI Score
8.6 yrs Payback Period
$1,735/yr Annual Savings
$43,375 25-Year Savings

Your savings estimate

$ /mo bill
Annual savings $1,735
·
Payback 8.6 yrs
·
25-yr savings $43,375

25-Year ROI Timeline

With a 8.6-year payback, your system spends 16.4 years in profit after breaking even.

Payback (8.6 yrs)
Profit (16.4 yrs)
Year 0 Year 6 Year 13 Year 19 Year 25
System Cost $15,000
25-Year Savings $43,375
Net Profit $28,375

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Solar Calculator for New Hampshire

Adjust the values below to see your personalized solar ROI estimate.

kW
$
$ /kWh
4.57 kWh/m²/day
Based on NREL data for New Hampshire
ROI Score 2.9x
Annual Production 7,511 kWh
Annual Savings $1,735
Payback Period 8.6 years
25-Year Savings $43,375
System Cost $15,000

New Hampshire vs National Average

Solar Irradiance: New Hampshire vs National Average New Hampshire: 4.57 kWh/m²/day National Avg: 5.12 kWh/m²/day
Solar Irradiance 4.57 kWh/m²/day
-11% vs national avg
Payback Period 8.6 years Near average
Electricity Rate $0.231 /kWh Above avg

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). Annual savings are calculated by multiplying estimated production by the local electricity rate. The ROI score represents total 25-year savings divided by system cost.

These estimates do not include the federal 30% ITC tax credit, state incentives, SRECs, or utility rebates, which can significantly reduce the effective payback period.

Solar ROI by Zip Code in New Hampshire

Explore solar data for specific zip codes in New Hampshire. Click any zip code for a full local breakdown.

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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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