Solar panels New Hampshire:

Prices, incentives and best companies 2023

Avg NH solar panel cost:

$11,159 - $13,639*

Avg 25 year savings:

$35,517 - $43,409

Avg payback period:

6.1 - 7.4 years

Estimate cost and savings based on your location and power usage

* Cost data based on quotes for fully-installed solar panel systems submitted on our platform. Prices are shown after applying the 30% federal tax credit.

New Hampshire solar panels guide 2023

Updated November 3, 2020

New Hampshire is a state that got solar right pretty early. The General Court passed a strong Renewables Portfolio Standard back in 2007, and with it came a good statewide rebate program to lower the up-front price of solar. It's now almost a decade later, and the state still has decent rebates and net metering, which are the major reasons solar is a great investment.

On this page:

Solar power prices, savings and payback in your part of New Hampshire

The average cost for an installed residential solar system in New Hampshire is currently $11,878 after claiming the 30% federal solar tax credit. This is $2.83 per watt. However, there is some variance in solar prices in different parts of the state. The graph below shows the average cost of installed solar systems in your part of the state.

Showing data for:

Utility provider: Eversource Energy New Hampshire
Utility bill: $ 137

Prices based on a 6.0kW system, after 30% federal tax credit

Cost range of local prices


Net profit (savings less system cost)


Payback period

6.1-7.4 years

Recommended size for the selected utility bill


Solar panel cost calculator

Cash flow graph based on cash purchase of a 6.0kW system

Are solar panels worth it in New Hampshire

Solar panels have fallen in price by more than 80% in the last ten years. In 2022 they also remain subsidized by the 30% federal tax credit and the net metering law, making them an excellent investment. They offer a return well above the long term average return from both the share market and also property investment.

Another way to look at this question is the levelized amount you will pay for each kWh of power you will use over the next 25 years with and without solar panels. As you can see below the savings are significant.

Levelized cost of solar energy
Levelized cost per kWh is the cost of the solar system divided by the total number of kWh produced by a solar system over it’s lifetime

5¢ /kWh

If you don't get solar

42¢ /kWh

(forecast avg New Hampshire electric rates over the next 25 years)

NH solar panel cost calculator

Best 10 solar installers in New Hampshire


New Hampshire solar incentives & tax credits

Federal solar tax credit

The most significant incentive to install solar panels for homes and businesses is the federal solar tax credit. At the end of 2020, the amount of the credit will decrease from 26% to 22% of the cost of the solar installation. Because home and business owners want to get the largest incentive amount possible, solar panel installation companies will likely be flooded with new projects before year’s end. In order to maximize your savings potential, the best time to go solar in New Hampshire is now.

Net metering

New Hampshire law requires utilities to offer their customers net metering. Under this law, net metering can be offered in one of two ways:

  • A utility can provide customers a credit equal to 1 kilowatt-hour (kWh) for each excess kWh sent to the grid; or
  • A utility can pay the customer for excess energy sent to the grid at the avoided cost rate, which is less than the retail rate.


If you opt for getting paid out at the avoided cost rate, you will receive a check for your excess energy. However, while it would be nice to receive a check, you will actually save more if you choose the one-bill kWh credits because kWh credits are equal to the full retail value of electricity.

Solar Renewable Energy Credits (SRECs)

New Hampshire has a renewable portfolio standard that requires utilities to derive 19.7% of their energy from renewable sources, and 0.60% of that must come from solar energy systems. 

In order to meet these goals, utilities must obtain SRECs, which represent the environmental benefits of producing 1 megawatt-hour of electricity from solar. Because of the solar energy target, New Hampshire has created a market for SRECs, in which one SREC can be sold for a maximum price of $57.15.

Table 2: Available incentive programs
Eligibility: Federal incentive
Type: Personal Tax Credit
Eligibility: State incentive
Type: Property Tax Incentive

Showing 1 - 2 of 3

Top models of solar panel installed in New Hampshire 2023

Average cost of solar panel installation in New Hampshire by system size

System size*
Cash purchase

(After tax credit)

Financed purchase

(After tax credit)

4kW $12,356 $13,221
5kW $14,815 $15,852
6kW $16,968 $18,156
7kW $19,607 $20,979
8kW $22,880 $24,482
9kW $24,642 $26,367
10kW $27,110 $29,008

Best solar companies in the main cities of New Hampshire

Different types of solar companies

Solar company reviews

Home solar basics

Is it better to lease or buy solar panels in New Hampshire

You will save most money by buying your solar system rather than leasing it. Read more about the pros and cons of leasing vs buying solar.

How long do solar panels last?

Minimum of 25 years but generally 30 or more

How do solar panels work on a home?

Solar panels power your house when they can but your home uses the utility company for power at other times. In 2023 "solar systems with battery storage" are becoming more popular. These are known as hybrid systems.

How do solar panels work?

Grid-tied solar system

A grid-tied system is the most common type of solar system. It has no solar battery for backup power and utilizes net metering to maximize savings. Solar panels are mounted on your roof then wired together, and the power generated flows into an inverter where direct current (DC) electricity is converted into alternating current (AC) electricity. This electricity is either used by your home or is exported to the utility grid.

Hybrid solar system

In hybrid solar systems, rooftop solar panels are connected to both a solar battery and the electric grid. The solar electricity generated by your panels that your home does not use is stored in the battery instead of being sent to the grid, which reduces your reliance on the utility while also providing backup power when needed. Battery storage is still expensive but you may be able to reduce costs by using state incentives.

Off-grid solar system

Off-grid solar systems are not connected to the grid at all, so all of your energy needs must be met by the sun. There is no utility to fall back on. The solar installation needs to power your home not only during the day, but after dark as well, so many solar panels and a large battery system are required. These systems are often expensive and don’t make sense for homes that have access to the grid.

Read more about types of home solar systems.

Do solar panels require regular maintenance?

No, but cleaning them can improve power generation if they are dirty.

Will residential solar power system cost fall in New Hampshire in 2023?

Given this environment, and the effect of import tariffs placed on solar panels by the Trump administration during 2018, it is hard to see that solar power system prices in New Hampshire will fall during 2023.

How much electricity do solar panel systems generate in New Hampshire?

Depending on the location, solar panels will generate different amounts of electricity.

A solar system that is installed on a south-facing 33-degree pitch roof New Hampshire will generate 1,150kWh of peak DC (direct current) capacity per year per 1kW in New Hampshire.

Enter your details into the solar panel calculator to see how your location, roof tilt, and roof direction impacts solar panel production.

What are the pros and cons of installing solar panels in New Hampshire?

The advantage of installing solar panels in New Hampshire is that there are both state-based incentives and the federal tax credit. In addition, New Hampshire has expensive power. This means that the overall return on investment for an installation of residential solar panels here is one of the best in the nation.

One disadvantage of installing solar panels for your home in New Hampshire is that there is less overall sunshine per year, so a solar system here will produce less electricity than a system in sunnier states, like Arizona, would. However, the available incentives more than make up for what the state lacks in sunshine, making installing solar panels in New Hampshire a great investment for homeowners… for now.

Several times over the last two years, state lawmakers passed bills to expand New Hampshire’s net metering rules. However, governor Chris Sununu has vetoed all of them. Things are still good for people who want to go solar in New Hampshire, but will soon be less rosy without action from the governor. For 2020, strong with its rebate program, and decent low income solar programs, New Hampshire holds steady as a good state for solar.

Enter your details to calculate the cost and savings you are likely to get from installing solar panels for your home.

What you can learn from our state solar panel calculator

This solar calculator requires you to input your address, utility company, your average monthly power spend - it tells you:

If you want to see all of the above but also see live pricing, the three best solar deals available in your city and get binding quotes from each of these solar companies then use this New Hampshire solar panels calculator. This calculator requires you to also input your name and contact details because most of our 200+ installer partners will only authorize the sharing of their live solar pricing where we have validated that you are a real homeowner with a home in their service area. We respect the privacy of your data and only share your contact details with the solar companies you ask us to get binding quotes from.

Note: Please keep in mind that the best source of up-to-date information on incentives are the solar installers who specialize in your area.

Related solar news