New Hampshire solar panels: The complete guide in 2025
Data updated Jul 15, 2025
Ready to go solar in New Hampshire? To offset the average typical electric bill, you’ll need a 10.62 kW system, which costs about $22,234 after the federal tax credit.
Cost for an average system in New Hampshire
| Out of pocket cost, cash | $31,763 |
| Federal tax credit (30%) | - $9,529 |
| Price post tax credit | $22,234 |
| 25-year savings | Payback period | Electricity offset |
|---|---|---|
| $97,289 | 8 Years | 101% |
As long as your federal tax bill is high enough, you can take advantage of the federal investment tax credit (ITC).
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Going solar in New Hampshire
Despite those long New England winters, New Hampshire’s pricey electric rates and solid net metering programs make it a great place to go solar.
Factor in the federal solar tax credit, and New Hampshireites can cut the cost of solar by thousands of dollars, speeding up their payback period and increasing the value of their investment.
Here's our guide to going solar in the Granite State.
Cost
How much do solar panels cost in New Hampshire?
Solar panels will save you a lot of money over time, but the upfront costs aren't cheap. The average New Hampshire homeowner needs a 10.62 kW solar panel system to cover their electricity needs, which comes out to $31,763 before incentives. Prices range from $26,999 to $36,527, but after the federal tax credit, that drops by 30%. However, the federal tax credit is now set to expire after 2025, following recent legislative changes. If you're considering solar, starting the process now could save you $9,529.
While this may sound high, it will pay off in New Hampshire. That's why over 10,000 New Hampshire homeowners have used EnergySage to receive and compare quotes for solar installations. You can expect to earn back your initial solar investment through electricity savings in about 7.84 years, while most systems last at least 25 years. You'll often see this number referenced as your solar payback period.
There are a few ways to pay for your solar panel system, each with its pros and cons.
Cash purchase: You pay for your system upfront. While it’s the most expensive option initially, it provides the best long-term savings.
Solar loan: You owe little to nothing upfront and make monthly payments on your system. With a solar loan, you get to maintain ownership of your panels. Still, they aren't all created equal: If you have access to subsidized clean energy loans through local incentive programs, that's usually your best bet. If not, go with a home equity loan or a personal loan. Private solar loans typically come with higher interest rates or upfront fees.
Solar lease or power purchase agreement (PPA): You have little to no upfront costs, but a third-party company owns your system. Depending on your contract, you’ll either lease your solar panels (solar lease) or purchase the electricity they generate (PPA). While they make sense in some situations, third-party ownership models generally provide the lowest savings. They can be beneficial, but remember to read the fine print.
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Incentives
What are the best solar rebates and incentives in New Hampshire?
Incentives help bring solar's price tag down considerably in New Hampshire. Here are the major ones to know about:
| Incentive | Average savings in New Hampshire | Description |
|---|---|---|
Residential Clean Energy Tax Credit, formerly the federal investment tax credit (ITC) | $9,529 | Lowers your solar panel system's cost by 30%, but expires January 1, 2026. |
New Hampshire solar property tax exemption | 1.77% of your system’s cost, annually on average | If you use solar energy as a source of power and your city or town adopts this exemption, you won't need to pay for the value your solar panels add to your property |
Is net metering available in New Hampshire?
In some states, you'll earn bill credits from your utility company when your solar panel system generates excess electricity and sends it to the grid. This incentive is known as net metering—basically a solar buyback program—and makes it so you will owe very little, or even nothing, on your electric bills with solar panels.
Under New Hampshire's current version of net metering, customers earn credits that are worth about 25% less than the retail rate of electricity—which is pretty good. But New Hampshire is reconsidering its net metering rules, and it’s unlikely to be better for homeowners than the current program.
You’ll be grandfathered into the old plan for many years if you go solar before those changes, so make sure to cash in on the current version while it's still available.
Learn more about net metering in New Hampshire, or check out program specifics below:
Equipment
Equipment quality
Each year, solar panels get more and more efficient—that is, they produce more power per square foot. As of 2025, the most popular solar panels can produce about 450 watts of electricity when they’re in full sunlight. If you want to make the most of your roof’s solar potential, get panels with at least that much power output.
You should also make sure to select a solar inverter setup that makes sense for your roof’s layout.
And if you want or need a solar battery, be sure to pick one that can integrate cleanly with that inverter.
Premium equipment can come with a high price tag, but it will often save you more money in the long run. The best equipment tends to have the best warranty terms, often guaranteed to 25 years (sometimes even 40!), so you’re covered in case you need repairs or replacements. The highest-quality panels also degrade more slowly, so they’ll maintain more of their power output further into the future.
Companies
Who are the best solar installers in New Hampshire?
We pre-screen all of the solar companies on EnergySage to ensure they'll provide you with a high-quality installation. We then rate them based on their results, reputation, and responsiveness. Here are the highest-rated EnergySage installers in New Hampshire:
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resources
Top solar resources for New Hampshire
- New Hampshire Solar Loan Providers
Search through our list of top loan providers to finance your solar panel system.
- New Hampshire Department of Energy
Learn about NH solar programs from the state government.
- NH Public Utilities Commission
Read more about how utility companies work in NH.
- New Hampshire Electricity Profile (EIA)
Learn about NH energy production and prices.
- NH State Solar Factsheet (SEIA)
See quick stats about how much solar energy has grown in NH.
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