
Solar Panel Cost in New Hampshire
Updated 2026 guide to solar panel prices, savings, and payback period in New Hampshire.
Estimated Solar Savings
Solar Panel System Costs in New Hampshire
Below are estimated costs for different solar panel system sizes in New Hampshire, including the 30% federal solar tax credit.
| System Size | Cost Before Incentives | Federal Tax Credit (30%) | Net Cost | Est. Annual Production |
|---|---|---|---|---|
| 4 kW | $12,400 | -$3,720 | $8,680 | 5,548 kWh |
| 6 kWMost Popular | $18,600 | -$5,580 | $13,020 | 8,322 kWh |
| 8 kW | $24,800 | -$7,440 | $17,360 | 11,096 kWh |
| 10 kW | $31,000 | -$9,300 | $21,700 | 13,870 kWh |
| 12 kW | $37,200 | -$11,160 | $26,040 | 16,644 kWh |
What Affects Solar Panel Cost in New Hampshire?
The average cost of solar panels in New Hampshire is $310/watt before incentives. For a typical 6kW residential system, that means a total cost of about $18,600 before the federal tax credit.
After applying the 30% federal Investment Tax Credit (ITC), your net cost drops to approximately $13,020.New Hampshire homeowners typically see a payback period of 8 years and save an estimated $33,000 over 25 years.
New Hampshire solar costs have dropped approximately 39% over the past decade. Strong net metering policies and state rebates help offset the initial investment.
Factors that affect your cost:
- System size: Larger systems cost more but have a lower cost per watt
- Equipment quality: Premium panels and inverters cost more but offer better efficiency
- Roof complexity: Steep roofs, multiple levels, or shading can increase installation costs
- Local labor rates: Installation costs vary by region within New Hampshire
- Incentives: State and local programs can significantly reduce your out-of-pocket cost

Solar Incentives in New Hampshire
Federal Solar Investment Tax Credit
30% Federal Tax Credit (ITC)
New Hampshire homeowners can claim the 30% federal ITC. Combined with the state rebate program, solar becomes an excellent investment.
State & Local Incentives
NH Residential Solar Rebate
RebateNew Hampshire offers a state rebate for residential solar installations through the Renewable Energy Fund.
Property Tax Exemption
Property TaxNew Hampshire municipalities can vote to offer property tax exemptions for solar energy systems.
Net Metering
New Hampshire offers net metering at the full retail rate for residential solar systems up to 100 kW. Excess credits can be carried forward.
AvailableSRECs
New Hampshire does not have a traditional SREC market, but the state's Renewable Portfolio Standard includes a solar carve-out that supports solar development.
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Solar Panel Cost FAQ - New Hampshire
The cost of solar panels in New Hampshire typically ranges from $2.50 to $3.50 per watt before incentives. For a standard 6 kW residential system, homeowners in New Hampshire can expect to pay between $15,000 and $21,000 before the federal tax credit. After applying the 30% federal Investment Tax Credit, the net cost drops to approximately $10,500-$14,700. Actual costs vary based on your specific roof, chosen equipment, and installer. We recommend getting at least three quotes from local New Hampshire solar installers to find the best price.
The average solar payback period in New Hampshire depends on local electricity rates, available incentives, and sun exposure. Most New Hampshire homeowners see a payback period between 6 and 10 years. After the payback period, you essentially enjoy free electricity for the remaining 15-20+ years of your system's life. Higher local electricity rates and additional state incentives can shorten the payback period significantly. A qualified New Hampshire solar installer can calculate your specific payback period based on your energy usage and roof characteristics.
New Hampshire homeowners who install solar panels typically save between $20,000 and $50,000 over 25 years, depending on system size, electricity rates, and available incentives. These savings come from reduced or eliminated electricity bills, net metering credits, and any applicable SREC income. As electricity rates in New Hampshire continue to rise (historically averaging 2-3% annually), your savings grow each year. The combination of the 30% federal tax credit and any New Hampshire-specific incentives helps maximize your return on investment.
The right solar system size for your New Hampshire home depends on your electricity consumption, roof space, and budget. The average New Hampshire home uses approximately 10,000-11,000 kWh per year, which typically requires a 6-8 kW solar system. To determine your ideal size, review your annual electricity usage on recent utility bills. Factors like New Hampshire's average peak sun hours, your roof orientation, and any shading will affect how many panels you need. A professional New Hampshire solar installer will use satellite imagery and your usage data to recommend the optimal system size.
Yes, solar is generally worth the investment for New Hampshire homeowners in 2025. With solar panel costs at historic lows, the 30% federal tax credit still available, and electricity rates continuing to rise, the financial case for solar in New Hampshire is strong. Most New Hampshire homeowners who go solar see positive returns within 6-10 years, followed by 15-20+ years of significant savings. Additionally, solar panels increase your home value, provide energy independence, and protect against future electricity rate increases. The best way to determine if solar is right for your New Hampshire home is to get a free, customized quote from a qualified local installer.
Solar Panel Costs by City in New Hampshire
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