Solar Panel ROI in 03801

Portsmouth, New Hampshire — Is solar worth it here? Here's what the data says.

2.8x ROI Score
8.9 yrs Payback Period
$1,680/yr Annual Savings
$42,000 25-Year Savings

Your savings estimate

$ /mo bill
Annual savings $1,680
·
Payback 8.9 yrs
·
25-yr savings $42,000

Solar Calculator for 03801 (Portsmouth)

Adjust values to see your personalized solar ROI estimate for Portsmouth, New Hampshire.

kW
$
$ /kWh
4.15 kWh/m²/day
Based on NREL data for Portsmouth, NH
ROI Score 2.8x
Annual Production 7,271 kWh
Annual Savings $1,680
Payback Period 8.9 years
25-Year Savings $42,000
After 30% ITC $10,500

Solar Data for 03801 – Portsmouth, NH

Solar Irradiance 4.15 kWh/m²/day -16.3% vs national avg
vs New Hampshire Avg +0.2% State avg: 4.57 kWh/m²/day
Electricity Rate $0.231/kWh New Hampshire average rate
Annual Production 7,271 kWh 6kW system estimate

Portsmouth gets 4.15 kWh/m²/day (16.3% below national avg) and electricity at $0.231/kWh. The 8.9-year payback represents a solid return — the federal 30% ITC further reduces costs.

Solar Incentives for Portsmouth, New Hampshire

Federal Investment Tax Credit (ITC)

Claim 30% of your system cost as a federal tax credit. On a $15,000 system, that's $4,500 back.

Net Metering

Most New Hampshire utilities offer net metering — sell excess electricity back to the grid at retail rates, accelerating your payback.

New Hampshire State Programs

Check with the New Hampshire energy office for additional rebates, tax exemptions, and low-interest solar financing programs available in Portsmouth.

03801 vs New Hampshire Average

Solar Irradiance
03801: 4.15 NH avg: 4.57
Payback Period
03801: 8.9 yrs NH avg: 8.6 yrs
Annual Savings
03801: $1,680 NH avg: $1,735
25-Year Savings
03801: $42,000 NH avg: $43,375

See the full New Hampshire solar guide for statewide data and incentives.

Nearby Zip Codes — Solar Comparison

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