New Hampshire Solar in 2026: The Honest Picture
New Hampshire homeowners face a significant shift in solar economics in 2026. The federal Residential Clean Energy Credit, which had provided a dollar-for-dollar reduction in federal taxes for most residential solar installations, expired on December 31, 2025. This means that for systems placed in service in 2026, the federal tax credit is no longer available to most homeowners.
However, New Hampshire remains a solid market for solar. The state offers meaningful incentives at the state level, including a full property tax exemption on solar equipment, zero sales tax on solar components, and a 1:1 net metering policy that credits excess generation at retail rates. These benefits, combined with moderate solar irradiance and competitive installer pricing, keep solar economically viable for many homeowners.
The key question for 2026 is whether state incentives and long-term electricity savings alone justify the upfront investment. For most New Hampshire homeowners, the answer is yes, but the payback period has extended to 10-12 years compared to 7-9 years when the federal credit was available.
Average Solar System Cost in New Hampshire (2026)
A typical residential solar system in New Hampshire ranges from 6 to 8 kilowatts (kW), sized to offset 80-100% of annual electricity consumption for an average home.
Gross system cost (before incentives): $28,500 to $31,000
- This includes equipment (panels, inverter, racking, wiring), labor, permitting, and interconnection.
- Per-watt pricing averages $4.25 to $4.75, consistent with regional market rates.
State and local incentives reduce net cost:
- Property tax exemption: saves approximately $1,500 to $2,000 over 10 years (100% exemption on equipment value).
- Sales tax exemption: saves 5% on equipment, roughly $1,200 to $1,400.
- Renewable Energy Fund rebates: up to $2,000 for eligible systems (availability varies by utility service territory).
- Utility-specific rebates: Eversource and Unitil occasionally offer $500 to $1,000 rebates; check current programs.
Net cost after incentives: $24,000 to $28,000
For detailed cost comparisons in your area, consult the EnergySage cost benchmarks at https://www.energysage.com/local-data/solar-panel-cost/new-hampshire/.
Real New Hampshire Homeowner Savings (Sample Scenarios)
Savings depend on your utility, electricity consumption, roof orientation, and system size. Here are five realistic scenarios:
Manchester (Eversource service area, 6 kW system):
- Annual electricity consumption: 10,000 kWh
- Current annual bill: $1,400
- Annual solar savings: $1,100 (after accounting for net metering and system losses)
- 25-year lifetime savings: $28,000
- Payback period: 11 years
Nashua (Unitil service area, 7 kW system):
- Annual electricity consumption: 11,500 kWh
- Current annual bill: $1,550
- Annual solar savings: $1,250
- 25-year lifetime savings: $32,000
- Payback period: 10 years
Portsmouth (Eversource, coastal, 6.5 kW system):
- Annual electricity consumption: 9,500 kWh
- Current annual bill: $1,350
- Annual solar savings: $1,050
- 25-year lifetime savings: $27,500
- Payback period: 11 years
Concord (Eversource, 7 kW system):
- Annual electricity consumption: 12,000 kWh
- Current annual bill: $1,620
- Annual solar savings: $1,300
- 25-year lifetime savings: $34,000
- Payback period: 10 years
Lebanon (Unitil, 6 kW system):
- Annual electricity consumption: 9,800 kWh
- Current annual bill: $1,380
- Annual solar savings: $1,080
- 25-year lifetime savings: $28,500
- Payback period: 11 years
These estimates assume 4.2 kWh/m2/day average solar irradiance (per NREL data for New Hampshire), a south-facing roof with minimal shading, and current electricity rates. Actual savings will vary based on your specific location and system design.
New Hampshire Solar Incentives Still Available in 2026
Property Tax Exemption
New Hampshire exempts solar equipment from property tax assessment. This means the value added to your home by a solar system does not increase your property tax bill. For a $28,000 system, this exemption saves approximately $150 to $200 per year in property taxes, totaling $1,500 to $2,000 over a 10-year period.
Sales Tax Exemption
Solar equipment is exempt from New Hampshire’s 5% sales tax. On a $28,000 system, this saves $1,400 upfront. This exemption applies to panels, inverters, racking, and labor.
Net Metering (1:1 Credit)
New Hampshire’s net metering policy credits excess electricity your system generates at the full retail rate. If your system produces more than you consume in a given month, the surplus is credited to your account and rolls over to future months. This is a 1:1 credit, meaning you receive full value for excess generation. Net metering is essential for maximizing solar ROI in New Hampshire.
Renewable Energy Fund Rebates
The New Hampshire Renewable Energy Fund, administered through the state’s Public Utilities Commission, offers rebates for residential solar installations. Rebate amounts vary by utility service territory and program year, typically ranging from $500 to $2,000 per system. Availability is limited and first-come, first-served. Check with your utility or visit the DSIRE database at https://www.dsireusa.org/ to confirm current rebate availability in your area.
ENERGY STAR Home Rebate
Homeowners who achieve ENERGY STAR certification for their home and include solar as part of the upgrade may qualify for an additional $500 rebate. This is a modest incentive but worth pursuing if you are already planning energy efficiency upgrades.
Federal Options (Limited in 2026)
The Residential Clean Energy Credit (Section 25D) is no longer available for systems placed in service after December 31, 2025. The only federal benefit available in 2026 is through third-party-owned solar leases under Section 48E, but the installation company must begin construction before July 4, 2026. Most homeowners purchasing systems outright will not qualify for a federal benefit. For details, see the IRS guidance at https://www.irs.gov/credits-deductions/residential-clean-energy-credit.
Is Solar Worth It in New Hampshire Without the Federal Credit?
The loss of the federal tax credit makes the decision more nuanced. Here is the framework:
Payback period: 10-12 years for most homeowners. This is longer than the 7-9 years typical when the federal credit was available, but still reasonable given the 25+ year lifespan of solar panels.
Long-term economics: After payback, your system generates free electricity for 15+ years. Over a 25-year lifespan, most New Hampshire homeowners save $28,000 to $35,000 in electricity costs.
Break-even analysis: If you plan to stay in your home for at least 12 years, solar is financially sound. If you plan to move within 7-8 years, the payback may not occur before you sell.
Non-financial benefits: Solar increases home value, reduces grid dependence, and provides protection against future electricity rate increases. These intangible benefits may justify the investment even if payback extends beyond 12 years.
Lease alternative: If you cannot afford the upfront cost or prefer to avoid ownership, some installers still offer solar leases or power purchase agreements (PPAs). These typically require no money down but offer lower long-term savings. Verify that your installer’s lease qualifies for the Section 48E federal benefit before signing.
Top Cities for Solar in New Hampshire
- Manchester: Largest city, strong installer competition, Eversource net metering, average payback 11 years.
- Nashua: Second-largest city, Unitil service area, good solar irradiance, average payback 10 years.
- Concord: State capital, Eversource service, moderate electricity rates, average payback 10 years.
- Portsmouth: Coastal location, slightly higher irradiance, Eversource service, average payback 11 years.
- Lebanon: Upper Valley region, Unitil service, competitive installer base, average payback 11 years.
- Keene: Southwestern region, Eversource service, growing solar adoption, average payback 11 years.
What to Look for in a New Hampshire Solar Installer
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Licensing and insurance: Verify the installer holds a New Hampshire electrical license and carries general liability and workers’ compensation insurance. Check the New Hampshire Department of Safety website for license verification.
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Experience with net metering: Ensure the installer understands New Hampshire’s 1:1 net metering policy and can design systems to maximize grid credits. Ask how many systems they have installed in your utility service territory.
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Familiarity with state incentives: The installer should be able to guide you through the property tax exemption process, sales tax exemption documentation, and any available Renewable Energy Fund rebates.
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Permitting and interconnection expertise: Solar installations require local building permits and utility interconnection approvals. Choose an installer who handles these processes and has established relationships with your local permitting authority and utility.
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Warranty and service: Verify the installer offers at least a 10-year workmanship warranty and has a local service team. Ask about monitoring and maintenance support.
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References and reviews: Request at least three local references and check online reviews on Google, EnergySage, and the Better Business Bureau. Look for installers with consistent 4.5+ star ratings.
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Transparent pricing: Request a detailed written quote that itemizes equipment, labor, permitting, and incentives. Avoid installers who are vague about costs or pressure you to sign before you have reviewed the full proposal.
Get Free Quotes From Vetted New Hampshire Installers
The solar market in New Hampshire is competitive, and installer pricing varies significantly. Obtaining multiple quotes is the best way to ensure you receive fair pricing and quality service.
Use online comparison platforms to request free quotes from vetted installers in your area. Compare equipment quality, warranty terms, and total net cost after incentives. Most installers provide quotes within 24-48 hours.
For additional research, consult the SEIA state market data at https://www.seia.org/states-map and the NREL solar resource maps at https://www.nrel.gov/gis/solar-resource-maps.html to understand solar potential in your specific location.
The loss of the federal tax credit in 2026 does not eliminate solar’s value in New Hampshire, but it does require careful analysis of your specific situation. With state incentives, net metering, and long-term electricity savings, solar remains a sound investment for homeowners planning to stay in their homes for at least a decade.
Sources for 2026 data: IRS Section 25D guidance, DSIRE state incentive database, New Hampshire Public Utilities Commission, SEIA state market reports, NREL solar resource maps, EnergySage cost benchmarks, Eversource Energy and Unitil rate schedules.