Solar in New Hampshire costs about $2.92 per watt, so the 9.87 kW system New Hampshire homeowners typically install runs about $28,820, and with no federal credit and no state rebate left, that is also what you pay. What pays it back is 26.67¢ power and an export credit locked through 2040. How fast depends on your utility, who supplies your power and how much of your solar power you use at home.
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With no credit or rebate, the quote you accept is what you pay. Your ZIP code shows local prices and installers.
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Why the price you’re quoted is the price you pay in New Hampshire
Two subsidies that used to lower a New Hampshire solar price are gone. That is why the gross price and the net price are the same number here.
The 30% federal credit is gone for systems you ownSection 25D paid 30% of a system’s cost for years. Under the One Big Beautiful Bill Act, it pays nothing on any owned system whose installation is completed after December 31, 2025. A cash or loan buyer in 2026 has no federal credit to claim.
The rebate was worth $0.20 a watt, up to $1,000. Senate Bill 303 repealed it and the program is permanently closed.
NH Department of EnergyNew Hampshire has no income tax, so a state solar tax credit is structurally impossible.
A local option that applies only where your town has adopted it. It keeps the home-value bump from solar off your assessed value, but does not cut the check you write the installer.
What the state offers instead, including the property-tax exemption and the export credit, is detailed in New Hampshire’s solar incentives.
What $2.92 a watt buys in New Hampshire, 6 kW to 12 kW
A competitively shopped system installs for $2.92 per watt before incentives. The typical system, 9.87 kW, the median size New Hampshire homeowners installed in 2025 (Berkeley Lab, 339 systems), comes to $28,820. For the picture beyond New Hampshire, start with our solar panel costs nationwide.
Prices multiply the $2.92 per watt Index price by system size. The battery figures add one 13.5 kWh battery at $13,500. Real quotes vary by roof, equipment and installer.
What a 9.87 kW system makes in New HampshireNew Hampshire gets 4.82 peak sun hours a day, and each installed kilowatt makes 1,319 kWh a year, so the typical 9.87 kW system makes about 13,019 kWh. That yearly figure already folds in the seasons: summer carries most of the output, and winter yield drops while snow sits on the panels. Heat pumps, electric water heating or an EV mean a larger array.
What the per-watt price coversModules and inverter, snow-rated mounting, the electrician’s labor, permits and interconnection paperwork, and the installer’s overhead and warranty. Labor and soft costs are what separate one New Hampshire quote from another.
The export credit New Hampshire locked in through 2040
Solar offsets the energy part of your bill. Power you send to the grid earns a credit set by your utility’s net-metering tariff, and that credit is where New Hampshire stands out.
Eversource, Liberty and Unitil
Surplus power earns 100% of energy and transmission plus 25% of distribution, guaranteed through 2040. Unused credit rolls forward, including at year end, and a balance over $100 can be cashed out each spring. That is a long window of certainty while other states trim export rates.
New Hampshire Electric Co-op
The co-op’s export credit is 62% of its retail rate, the weakest in the state.
The fixed charge staysA system that zeroes your usage still leaves the fixed monthly customer charge. It runs from $14.74 a month at Liberty Utilities to $29.00 at the New Hampshire Electric Co-op.
On a Community Power program or another supplier?Solar still cuts the power you buy, but the credit for your surplus can differ: Liberty pays a cash surplus credit only to its default-service customers. Ask your supplier in writing how it credits exports.
What sets a New Hampshire payback
With no credit or rebate, you pay the full price up front. High and rising rates bring that money back over time. Exports earn less than retail, and how much less depends on your utility and who supplies your power. Co-op members wait longest.
The full year-by-year math, by utility, sits in whether solar is worth it in New Hampshire.
What pushes a New Hampshire quote up, and the tax that isn’t there
New Hampshire sits 1.0% above the national price per watt. Winter, distance and paperwork add cost; the missing sales tax takes some back.
+What pushes a quote higher
- Snow loadRacking needs steeper tilt and mounts engineered for heavy ground snow loads, heaviest in the North Country. That adds hardware and engineering time.
- Rural travelCrews serving northern and western towns drive long distances, and that time lands in the labor line.
- Older housing stockAn aging electrical panel may need an upgrade to 200 amps before a system can connect. That sits outside the per-watt price.
- A tight labor marketLicensed electricians are scarce across northern New England, which keeps installation rates firm.
- Town-by-town permittingNo statewide standard and little SolarAPP+ adoption. Contract to permission to operate takes two to four months, and installers build that friction into the quote.
−What keeps New Hampshire prices down
- No state sales taxSolar equipment is untaxed at the point of sale, because New Hampshire has no general sales tax.
- Southern installer competitionA dense installer field in the Manchester and Nashua corridor holds quotes down for homeowners who collect more than one bid.
Line items outside the per-watt priceA ground mount instead of a roof mount, a 200-amp panel upgrade, tree removal for shade, and a battery all show up as additions. Ask which of these your quote assumes. Larger all-electric systems can also trigger a longer utility interconnection review.
A New Hampshire battery buys backup, not savings
A battery is the largest single line item after the panels. Because the export credit sits close to retail, storing power to dodge a higher rate later returns little. It earns its place on backup during outages.
Whether storage earns its price depends on your outage risk and the longer payback math.
Financing a New Hampshire system after the federal credit
Losing the federal credit changed how New Hampshire buyers finance a system. Compare the financed price with the cash price for the same hardware.
Pay cash
You own the system
Upfront
The full price, about $28,820 for 9.87 kW.
Monthly
Nothing. You keep the full net-metering value.
Credits
None for owned systems completed after December 31, 2025.
Watch out for
No credit or rebate softens the upfront check.
The strongest long-term return, with no financing fees.
Solar loan
You own the system
Upfront
Often $0 down.
Monthly
A loan payment. Confirm it beats your current electric bill.
Credits
None for owned systems completed after December 31, 2025.
Watch out for
Many zero-down loans fold a dealer fee into the principal, so the financed price runs above the cash price.
Ownership without cash, at a higher total cost.
Lease or PPA
The provider owns the system
Upfront
No money down. Both are legal in New Hampshire.
Monthly
A lease payment or a rate for the power.
Credits
The owner claims the commercial Section 48E credit and prices some of it into your rate. You never file for it.
Watch out for
The construction-start deadline passed July 4, 2026, so new offers must reach service by the end of 2027 to qualify.
The only route to a federal credit in 2026, and it can transfer if you sell.
A HELOC can be the cheapest loanA home-equity loan or HELOC avoids the dealer fee baked into many solar loans. You own the system outright and keep the full net-metering value. Before any $0-down pitch, read free solar in New Hampshire.
Group net meteringNew Hampshire lets several accounts share the output of one system. Households whose roofs cannot host panels can buy into a local project and receive bill credits under the same utility tariff. It is a smaller market than rooftop ownership.
Five New Hampshire homes where solar struggles
Solar fits most New Hampshire roofs. These are the exceptions:
- A roof with under 12 to 15 years left. Removing and reinstalling panels at re-roof time adds $1,500 to $5,000 the panel warranty will not cover. Replace the roof first. Standing-seam metal roofs, common up north, take a clamp-on mount with the least labor.
- Heavy shading. A roof that loses more than a quarter of its sunlight to trees or dormers stretches payback past the point where the system pays for itself.
- A low-usage co-op account. The co-op’s 13.76¢ export credit and $29 fixed charge give the weakest economics in the state, though a sound, unshaded roof still recovers its cost inside the panels’ warranted life.
- A short stay. Savings take years to pass the system cost, and longer on a supplier that pays little for exports. If you may move sooner, a lease or PPA that transfers to the next owner is the better call.
- No roof of your own. Renters and most condo owners cannot install rooftop panels, and there is no plug-in balcony-solar allowance yet. Group net metering is the practical option.
Vetting an installer in a state with no solar license
New Hampshire licenses the electrical work but has no separate solar trade license, so vetting the firm matters. Before signing, ask:
- Who pulls the electrical permit? Work at 30 volts or higher needs a licensed master electrician through the Electricians’ Board under RSA 319-C. Confirm an active New Hampshire license.
- Is the racking engineered for our snow load? Ask for the design snow load and the tilt plan that sheds it.
- How long is the town permit taking? Timelines run town by town. A local installer knows your municipality’s queue.
- Are your installers NABCEP-certified? It is the voluntary industry credential and a fair proxy for competence.
- Who honors the workmanship warranty? Several national installers have failed in the past two years, stranding customers. A stable local firm can be worth more than a longer paper warranty.
- Is the price fixed, and is the production estimate in writing? Both let you hold the installer to what they sold and compare bids line for line.
For help comparing firms against these questions, see top New Hampshire solar installers.
Check your payback on your New Hampshire utility
Your utility, your power supplier and your bill decide your payback. Enter your ZIP code for an estimate built on your town’s rates and your own electric bill.
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Keep reading on New Hampshire solar
Frequently asked questions
How Much Do Solar Panels Cost in New Hampshire in 2026?
The typical 9.87-kilowatt system, the median size New Hampshire homeowners installed in 2025, costs $28,820 before incentives, at $2.92 a watt. A 6-kilowatt system costs about $17,520 and a 12-kilowatt system about $35,040. With the federal credit gone, that gross figure is also what you pay.
Is There Still a Federal Tax Credit for Solar in 2026?
Not for systems you own. Section 25D ended for owned systems whose installation is completed after December 31, 2025. Only a lease or PPA reaches a credit now, and the system’s owner claims it and prices it into your rate; you do not file for it yourself.
Does New Hampshire Have a State Solar Rebate?
No. The rebate, once worth $0.20 a watt up to $1,000, was repealed by Senate Bill 303 in 2024, and the state has no income tax to hang a credit on. The savings here come from New Hampshire’s high electricity rates.
Why Buy Solar in New Hampshire With No Incentive?
The state’s 26.67¢ average electricity rate is among the highest in the country, and its export credit is locked just under retail through 2040. High, rising rates mean every kilowatt-hour your system offsets is worth more here than in most states.
How Much Does a Solar Battery Cost in New Hampshire?
Residential storage runs $1,000 to $1,300 per kilowatt-hour installed, so a 13.5-kilowatt-hour battery adds $13,500 to $17,550. In New Hampshire a battery is mainly for backup power, since the export credit is high enough that storing energy saves little on the bill.
Do Solar Panels Work Through New Hampshire Winters?
Yes. Panels are more efficient in cold air, and bright winter days produce well. Snow cuts output while it sits on the array, so a steeper tilt that sheds snow matters more here than in warmer states.
Which New Hampshire Utility Gives the Best Solar Value?
The three investor-owned utilities, Eversource, Liberty, and Unitil, credit exports at 80 to 85% of retail. The New Hampshire Electric Co-op credits exports at 62% and charges $29 a month, so its members see the state’s slowest returns.
How we calculate these costs
The $2.92 per watt behind every figure is New Hampshire’s entry in the EcoGen Solar Cost Index (September 2026 Edition), 1.0% above the $2.89 national figure and tied 30th lowest of 51. It is built from the Department of Energy’s cost benchmark adjusted for local labor wages, run through our cost model, calibrated against current marketplace quotes and checked against installed prices from Berkeley Lab. The typical system size is Berkeley Lab’s 2025 median for New Hampshire single-family installs (339 systems). This page gives no single statewide payback, because it depends on your utility, your supplier and home use. The New Hampshire worth-it guide works through it utility by utility.
Sources (11)
- U.S. EIA, Electric Power Monthly, residential price by state, 12-month average August 2025 to July 2026
- IRS, Working Families Tax Cuts: One Big Beautiful Bill Act provisions: irs.gov
- IRS, Residential Clean Energy Credit (Section 25D)
- NHPUC, Order on Net Metering, Docket DE 22-060, Order No. 27,074 (November 18, 2024): puc.nh.gov
- New Hampshire Department of Energy, Residential Renewable Electrical Generation Rebate Program: energy.nh.gov
- New Hampshire Electric Cooperative, Schedule of Fees & Rates: nhec.com
- Liberty Utilities, New Hampshire Electric Rates & Tariffs (effective July 1, 2026)
- Unitil Corporation, Rates
- NREL, PVWatts Calculator
- Berkeley Lab, Tracking the Sun, 2024 Edition
- New Hampshire OPLC, Electricians’ Board
