Solar Panels New Hampshire — Costs, Savings & Payback
The Real Cost of Waiting for Solar Panels in New Hampshire
Eversource NH, Liberty Utilities raised residential rates by up to 12% in the past 12 months alone — a trend averaging 4–7% per year for a decade. At New Hampshire's current $0.2739/kWh and 4.15 peak sun hours daily, every year without solar means roughly $1,534 – $3,068 in electricity costs paid to your utility with nothing to show for it.
To give you a reliable picture, these estimates are built on strictly conservative assumptions: no expired incentives, includes ~4%/yr electricity rate increases (EIA historical avg), Full Retail NEM (1:1) — every exported kWh credited at full rate. While other sites inflate their numbers to close a sale, we show reality — so the savings you see here are savings you can actually count on.
New Hampshire Solar Data at a Glance
New Hampshire ranks among the top solar markets in the US. With electricity rates more than 1.5× the national average and 4.15 daily sun hours, every installed kilowatt of solar panels in New Hampshire generates significantly more value than in lower-rate states. Utility rates have risen 4–7% annually for a decade — locking in your energy costs today protects you for 25+ years.
Source: NREL Solar Radiation Database
Most New Hampshire homeowners going solar in 2026 are looking at a gross investment of $22,500 – $43,500 — with returns outperforming the national average. The payback period is roughly 2 years shorter than the US median. New Hampshire's property tax exemption shields $20,300 – $40,600 in solar-added home value from reassessment.
Rates from EIA ($0.2739/kWh), sun hours from NREL. All figures use real location data and already factor in a 4%/year compounded electricity rate increase — giving you a realistic picture you can actually plan with. Use our free Solar Calculator for a personalized ZIP-level estimate.
Data: May 2026
Why Solar Panels in New Hampshire Make Financial Sense
- Electricity rate 52% above the national average at $0.2739/kWh — every self-consumed kilowatt-hour saves far more than in a typical state, compressing payback and boosting ROI
- 4.15 peak sun hours daily — enough to consistently offset the majority of household electricity consumption with solar panels in New Hampshire
- New Hampshire exempts solar-added home value from property tax reassessment — your assessed value rises by $20,300 – $40,600, but you pay no additional property tax on that increase
- Full retail net metering means every exported kilowatt-hour from your solar panels in New Hampshire earns a full credit at $0.2739/kWh, maximizing year-round financial return
New Hampshire law protects solar-added home value from property tax — your assessed value rises by $20,300 – $40,600, but you pay no additional property tax on that amount. NREL and SEIA data consistently show solar panels New Hampshire delivering positive lifetime returns, particularly for Eversource NH and Liberty Utilities customers, where rates have risen 4–7% annually. Use our Solar Calculator for your exact numbers. NREL research shows solar panels New Hampshire retain 87–92% of their output after 25 years — meaning the New Hampshire solar investment keeps delivering well beyond the payback window.
Top Solar Cities in New Hampshire
| City | Peak Sun Hrs | Avg. Rate | Est. 10-Year Savings* | Est. Payback |
|---|---|---|---|---|
| Portsmouth | 4.15 hrs/day | $0.2739/kWh | $31,684 | 10 years |
| Manchester | 4.15 hrs/day | $0.2739/kWh | $31,306 | 10 years |
| Concord | 4.15 hrs/day | $0.2739/kWh | $30,929 | 10 years |
| Keene | 4.15 hrs/day | $0.2739/kWh | $30,552 | 10 years |
*$200/month bill, south-facing roof. NREL + EIA data. Use our free Solar Calculator for your exact address.
Solar Panels New Hampshire vs. US Average
At $0.2739/kWh — +52% higher the national average — solar panels New Hampshire generate above-average value per installed watt. Combined with 4.15 daily sun hours, New Hampshire delivers strong 25-year returns compared to most US markets. Independent NREL and SEIA data consistently confirm solar panels New Hampshire deliver positive lifetime returns across all household consumption levels at New Hampshire's current rates.
| Factor | New Hampshire | US Average | NH Advantage |
|---|---|---|---|
| Peak Sun Hours | 4.15 hrs/day | 4.15 hrs/day | -8% less |
| Solar Payback Period | ~10 years | 15 years (US avg) | 5 yrs faster |
| 10-Year Savings* | $30,187 | $28,815 | $1,372 more |
| 25-Year ROI* | ~282% | ~147% (US avg) | +135% higher |
*$200/month bill reference. Sources: NSRDB (NREL), EIA.
How Much Can a New Hampshire Family Save with Solar?
Most New Hampshire families save $1,534 – $3,068 per year with solar panels. Homes with EV charging or high baseload usage benefit most from New Hampshire solar — Eversource's above-average rates and retail NEM deliver strong long-term returns.
Solar Incentives in New Hampshire (2026)
Property Tax Exemption: New Hampshire law exempts solar-added home value from property tax calculation. Eversource and Liberty customers benefit from a rising home value without the offsetting reassessment that normally follows.
Net Metering: When your solar panels produce more than you use, the surplus flows to the grid and you earn a full credit at $0.2739/kWh — the same rate you'd pay to buy it back. Think of the grid as a free battery: you bank excess power during the day and draw from your credits at night.
New Hampshire Solar FAQ
Most homeowners save $1,534 – $3,068 per year with solar panels New Hampshire. At $0.2739/kWh and 4.15 sun hours, solar panels New Hampshire pay back in ~11 years and generate $73,213 – $146,427 over 25 years. Use our Solar Calculator for your ZIP.
A typical New Hampshire home needs a 6–11.6 kW system (15–29 panels), costing $22,500 – $43,500 at 2026 prices. New Hampshire's property tax exemption shields solar-added home value from reassessment. Use the calculator above for your exact numbers.
The federal solar tax credit (Section 25D, ITC) expired December 31, 2025 and is no longer available. New Hampshire property tax exemption on solar-added home value. Net metering: Full Retail 1:1 — Full Retail 1:1— New Hampshire maintains full retail net metering. Every kilowatt-hour your solar panels New Hampshire export earns a full credit at $0.2739/kWh, significantly improving payback and 25-year ROI.
Solar in Nearby States
Curious how solar looks in other states? Check out the Solar by State hub →
Free Tools & Guides
New Hampshire solar data sourced from U.S. EIA, NREL, and DSIRE. Last updated May 2026. Estimates are illustrative averages — use our free Solar Calculator for personalized results.