Top 7 Best Solar Companies in New Hampshire (2024 Reviews)

In this complete guide to hiring the best solar panel company in New Hampshire, you’ll learn:

  • What are the most reputable solar installers in New Hampshire?
  • Is there any way to save money on your system when choosing a solar provider in New Hampshire?
  • Is a DIY solar installation a good idea in New Hampshire?
Find local solar quotes
Get Quote
Join the 1,587 homeowners who got free quotes in the past 30 days.
Advertising Disclosure

Each product and or company featured here has been independently selected by the writer. You can learn more about our review methodology here. If you make a purchase using the links included, we may earn commission.

New Hampshire is one of the most profitable states to convert to solar, with the average customer in the area seeing energy savings that pay for their system in just eight years and then save an additional $57,051, on average. Making the decision to go solar in NH is typically an easy one, but choosing one of the 24 installers in the area is much more challenging.

In this guide, we’ll be reviewing the best solar companies in New Hampshire. We’ll explain where each excels and falls short, some things to consider before choosing one and more.

What Are the Best Solar Companies in New Hampshire?

New Hampshire is home to 24 solar panel installation companies, according to the Solar Energy Industries Association (SEIA). We’ve spent hours reviewing each of these providers and believe that the following are the best options in your area:

Compare New Hampshire’s Top-Rated Solar Providers

Of the 20+ solar installers in New Hampshire, we recommend SunPower or All Energy Solar for most customers. These providers deliver high-quality equipment, great customer service and extensive expertise for a successful and safe installation.

The table below includes a look at how these two companies stack up to our other top picks.

Solar Providers Superlative Our Score Avg Cost Warranty Financing Options Get Quote
SunPower Best National Provider 5/5 $$$$ Minimum of 25 years for equipment, workmanship and production Cash, solar loan, solar lease, PPA Get Quote
Tesla Best Technology 4.5/5 $$ 25 years for equipment and performance; 10 years for workmanship Cash, solar loan, solar lease, PPA Get Quote
All Energy Solar Best Regional Provider 4/5 $$$$$ 25 years for equipment and performance; workmanship warranty term not disclosed Cash, solar loan, solar lease, PPA Get Quote
New England Clean Energy Best Customer Service 4.5/5 $$$ 25 years for equipment and performance; 20 years for workmanship and roof leak protection Cash, solar loan, solar lease, PPA Get Quote
ReVision Energy Best for System Customization 4.5/5 $$$ 25 years for equipment, performance and workmanship Cash, solar loan Get Quote
Great Sky Solar Best Social Impact 4/5 $$$ 25 years for equipment and production Cash, solar loan Get Quote
Granite State Solar Best Local Installer 4.5/5 $$$ 25 years for equipment and production; 12 years for workmanship Cash, solar loan Get Quote
Badge icon

SunPower

Best National Provider

Nationwide Service

EcoWatch rating

Average cost

Read full review now

Pros

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage

Cons

  • Expensive
  • Customer service varies by local dealer
Badge icon

Tesla Energy

Best Technology

Nationwide Service

EcoWatch rating

Average cost

Read full review now

Pros

  • Price-match guarantee
  • Sleek, efficient and durable solar panels
  • Best solar battery on the market

Cons

  • Some reported issues with customer service
  • Customer service varies by local dealer
Badge icon

Tesla Energy

Best Technology

Nationwide Service

EcoWatch rating

Average cost

Read full review now

Pros

  • Price-match guarantee
  • Sleek, efficient and durable solar panels
  • Best solar battery on the market

Cons

  • Some reported issues with customer service
  • Customer service varies by local dealer
Badge icon

All Energy Solar

Outstanding Regional Installer

Regional Service

EcoWatch rating

Average cost

Pros

  • Full-service home energy solutions
  • Excellent reputation
  • NABCEP-certified technicians

Cons

  • Expensive
Badge icon

New England Clean Energy

Outstanding Regional Installer

Regional Service

EcoWatch rating

Average cost

Pros

  • Many financing options
  • Competitive pricing
  • Great warranty coverage

Cons

  • Limited brands of solar equipment available
  • Slightly limited service offerings
Badge icon

ReVision Energy

Outstanding Social Impact

Regional Service

EcoWatch rating

Average cost

Pros

  • Comprehensive service offerings
  • Certified B Corp
  • Many years of experience

Cons

  • Relatively short workmanship warranty
  • No leases or PPAs

Watch Below: How Much Does It Cost to Go Solar in New Hampshire?

How Can You Save Money When Hiring A Solar Company In New Hampshire

The typical cost of solar panel systems in New Hampshire is around $24,505 before any solar benefit programs.

The cost per watt in the Granite State is well above the national average — $3.33 — and typically falls around $3.77. Despite a higher cost per watt, systems are more affordable overall because the low energy consumption in NH demands a smaller system — around 6.5 kilowatts (kW) — than the average of 9 kW in the U.S.

Although the total cost to go solar in NH is a few thousand dollars below the national average, it’s still far more than many New Hampshirites can afford to pay upfront. As such, most look for ways to save money when choosing an installer. Below are some tips for minimizing your initial and long-term costs:

  • Take advantage of the many solar incentive programs available in NH
  • Consider installing a solar storage solution
  • Choose a high-efficiency panel brand
  • Get a few different free quotes

We’ll explain why these strategies tend to save you money in New Hampshire below.

Take Advantage of Local Solar Benefit Programs

No matter where you live, taking advantage of the incentives available for going solar is one of the best ways to bring down your initial costs and maximize your long-term savings. In the table below, we’ll include all of the incentives available to New Hampshire residents and explain how each can affect your system total.

Solar Benefit Program Program Description
Federal Solar Investment Tax Credit (ITC) This is a credit that gets applied to the income tax burden you owe to the federal government. It’s applied the year you install your system and can be carried over for up to five years. The credit is for 30% of what you pay for panels, batteries, inverters and installation labor, which averages around $7,352 in NH.
Residential Small Renewable Energy Rebate Program The State of New Hampshire incentivizes solar adoption by offering a cashback incentive of up to $200 for every kilowatt (kW) of solar equipment you install on your home. The rebate can be up to 30% of your system value or $1,000, whichever is lower.
Net Metering Net metering is a highly beneficial billing option that guarantees solar customers get credited for any excess energy their systems generate. You earn credits for power sent to the grid, and those can be used to offset the energy you pull from the grid in the future. This helps maximize long-term savings and can help minimize the panel payback period.
EverSource ConnectedSolutions Energy Storage Rebate EverSource customers can earn cashback incentives if they install a battery alongside their panels and allow their utility company to tap into the power stored when needed. As of late 2024, the remaining funds available for this program was down to $750,000, so it won’t last much longer.
Property Tax Exemption for Renewable Energy and Electrical Energy Storage NH exempts the value your solar power system adds to your home when assessing your property taxes. This perk prevents your taxes from going up due to solar conversion.

 

Consider Installing a Solar Battery

Solar batteries will undoubtedly add to your system total, but they can pay for themselves in some cases and add even more to your home value, making them a good option for some in NH.

Specifically, you might want to consider an energy solution for solar storage if you’re an EverSource customer. This utility company provides cashback perks for solar customers who install a battery and allow the company access to the stored power during times of high demand.

Not only can a battery earn you some additional money, but it can help offset your energy bills by minimizing how much power you pull from the grid at night, on rainy days or when snow is covering your panels. Ultimately, a battery makes it easier to eliminate electric bills or come close to it in NH.

Choose a Highly Efficient Panel Brand

Choosing a solar installer that offers high-efficiency panel brands is a great way to pay off your system more quickly and earn more in energy savings over time.

New Hampshire sees heavy snowfall every year, and snow coverage can decrease solar power production. Not only that, but the state sees a below-average number of sunny days per year, which also drives production down.

High-efficiency panels will help keep your overall production up, which means greater savings on your energy bills and a faster panel payback period.

Get Multiple Free Quotes

Finally, we suggest you get a few different free quotes from installers in your area. NH is home to 20 solar providers, and you’re likely to get 20 different prices from these installers for the same system due to differences in equipment costs and labor costs.

Getting a handful of free quotes from companies that service your area is a good way to get an idea of where your pricing should be. You can then rule out more expensive companies or those that don’t provide the same value for the price.

You can use our solar calculator to see average solar panel costs in your area and to get an idea of how much you can save by converting to solar in New Hampshire.

Will Solar Increase Your Home Value In New Hampshire?

The average property value in NH sits at around $447,215, and solar is expected to raise this value by around 4.1%.3,4 That’s an average increase of approximately $18,335. Given that the typical system costs far less than this after the federal tax credit is taken, the return on investment (ROI) for solar in New Hampshire is outstanding.

There are a handful of municipalities in NH that have adopted solar on a city-wide level.5 While this doesn’t always mean that solar will be more accepted and more valued by residents as well, it is a good precursor for a higher ROI on residential solar systems. These municipalities include:

  • Concord
  • Durham
  • Hanover
  • Keene
  • Lebanon
  • Lee
  • Nashua
  • Peterborough
  • Plymouth and
  • Stratham

Should New Hampshire Residents Hire a Professional Solar Installer Or DIY?

solar panels installed in a garden

Although the cost of going solar is well below the national average in NH, many residents are still tempted to attempt DIY solar panels and installations because they are significantly cheaper than hiring a professional. Unfortunately, there are a few reasons why DIY solar arrays aren’t ideal in New Hampshire, including:

  • Less appealing warranties on DIY equipment
  • Lower panel efficiency for DIY solar kits
  • A higher risk of property damage resulting from a lack of experience

We’ll explain these drawbacks in greater depth in the following sections.

Warranty Coverage Is Less Appealing

The most significant downside to DIY installations in New Hampshire, in our opinion, is the lack of warranty coverage you get. Professionally installed panels typically come with 25 years of protection for physical damage, ten years of protection for the installation services and between 20 and 25 years of protection for the panel efficiency.

In New Hampshire, we believe efficiency and installation guarantees are the most important. Efficiency warranties help ensure you can offset the well-above-average energy rates for years after installation, thereby maximizing your savings.

Labor warranties help protect against damages from roof leaks and other issues, which are more common in New Hampshire due to above-average precipitation.

DIY panels come with no labor warranty, and their efficiency warranty often only lasts for around ten years. You might pay less for a DIY solar system initially, but your long-term outlay of cash could be significantly higher.

DIY Panels Aren’t as Efficient

We’ve mentioned above that panel efficiency is an important consideration in New Hampshire. This is true not only because your panels receive below-average amounts of sunlight due to cloudy days and snow coverage in the winter but also because the cost of pulling power from the grid when your panels underperform is about 49% more costly than it would be in other states.6

DIY panels usually have efficiency ratings closer to 15% but up to about 20%. Professional panels go up to 22.7% and often sit above 20%. DIY solar panels also tend to degrade in efficiency more rapidly and have efficiency warranties that last around ten years on average. Professional panels can have efficiency warranties for 90% efficiency for up to 25 years.

It might be tempting to pay less for DIY panel installation. However, you’re more likely to start at a low efficiency and lose efficiency more quickly with DIY panels, yielding lower overall savings vs an efficient professional solar panel.

Property Damage Is More Likely With DIY Installations

Finally, property damage from improper panel installation is a serious concern no matter where you live, but especially in New Hampshire. This is primarily because rainfall and snowfall are far above average in the area, making roof leaks more likely.

Even experienced DIYers will have minimal experience installing solar equipment, in particular. A lack of experience will significantly increase the risk of property damage. Again, you might save money upfront by installing your panels yourself, but the resulting property damage could prove to be more costly overall than hiring a professional.

What Should New Hampshirites Look For in a Solar Installer?

close up of solar panel details

New Hampshire residents have unique needs when it comes to PV panels, so there are a few things we recommend looking for in a solar panel installation company in your area. These include:

  • Lengthy warranty coverage
  • High-quality panel brands
  • Lots of experience in the industry and in NH, specifically

We’ll explain why we think these are the most important qualities to look for in a New Hampshire installer below.

Good Warranty Coverage

First off, we suggest prioritizing labor and efficiency warranty coverage in your solar installer.

Labor warranties help protect you against issues with the installation, specifically roof leaks that could result from improper technique. They also help ensure you’re not choosing a company that is inexperienced and new to the industry, as these installers rarely offer good labor warranties.

Panel efficiency warranties can help make sure your system continues to serve you and save you money for years to come. Some companies even offer performance warranties guaranteeing that your system will provide the exact amout of power as outlined in your estimate. This is especially crucial in areas throughout New England, which has some of the highest electricity prices in the country.

High-Quality, High-Efficiency Panel Brands

For similar reasons, we recommend choosing an installer that uses durable, high-quality panel brands that boast above-average efficiency. High efficiency means better energy production, which can offset losses from snow coverage and frequent cloudy days.

Some panels that work well for NH residents’ needs include:

  • SunPower/Maxeon (the highest-efficiency panel brand in the industry)
  • REC
  • Panasonic
  • Silfab
  • Trina
  • Canadian Solar
  • Q Cells

Experience

Finally, we suggest you choose a company that has several years of experience — at least five but, ideally, ten — in the industry and in NH, specifically. An experienced company is less likely to run into hiccups with permitting and offers a lower risk of poor installation technique.

Plus, well-established companies are less likely to go out of business, which means your warranties are more likely to remain in effect.

 

The cost information presented in this article is derived from a comprehensive analysis, incorporating data from multiple industry sources. The average cost per watt per state was calculated based on figures from Consumer Affairs, Energy Sage, and Berkeley Lab’s Electricity Markets & Policy Department. Additionally, monthly energy consumption and the average monthly cost of electricity were sourced from the U.S. Energy Information Administration, ensuring a well-rounded and accurate representation of the information presented.

Methodology: How We Reviewed the Best Solar Companies in New Hampshire

In an effort to make sure we only recommend the best solar companies in New Hampshire, we carefully researched and reviewed the 20+ installers that operate in the state and ranked them based on six main criteria. We’ll explain those factors below and why we believe they’re so important in New Hampshire, specifically.

  • Local reputation and reviews (20%): The local solar scene is really just starting to pick up in New Hampshire, and with the recent bump in demand for clean energy, we’ve seen some less reputable companies popping up to take advantage. To help you avoid these providers that are less likely to offer good service and quality workmanship, we read through dozens of company reviews to see which companies are most likely to meet and exceed your expectations.
  • Pricing and financing (20%): The per-watt cost of solar equipment in New Hampshire is around $3.77, making it one of the more expensive places to go solar in the country and well above the national average of $3.33. To help keep your installation costs low, we next look at each provider’s average pricing and try to promote installers that maintain average or below-average costs. We also prefer companies that have a wealth of payment options available, as they are likely to appeal to more customers and make solar more attainable.
  • Services offered (20%): Next, we consider the services and add-on products each provider offers to customers. Solar batteries are a popular choice in New Hampshire, EV chargers are becoming more and more prevalent and a lot of customers look for other energy efficiency upgrades to help combat the above-average energy prices in the area. Companies that offer a slew of different services are more likely to meet those local needs.
  • Warranty coverage (20%): New Hampshirites see a lot of snow and rain each year, along with their fair share of extreme weather. The exposure to strong winds and moisture naturally puts rooftop solar systems at an elevated risk of damage. That’s why we find it so important for companies to include robust warranty coverage for their products and labor. We specifically look for workmanship warranties that are longer than ten years, as this helps avoid issues with roof leaks and system damage that can result from improper installation.
  • Company experience (10%): Since the local solar industry is just starting to expand and take off in New Hampshire, we’re leery of promoting installers that are just popping up now. We try to stick to companies with at least a decade of experience. This accomplishes two things. First, experience means a lower risk of improper installation. Second, companies with more longevity in the industry are more likely to stick around and honor your warranty coverage.
  • Brand quality (10%): Finally, we look at the brands of solar equipment offered by each installer. We really like to see a variety of brands, including affordable options that help keep the above-average cost of PV equipment in NH down, as well as high-efficiency options for maximizing the chances of eliminating the high electric bills in the area.

FAQ: Best Solar Companies in New Hampshire

Below, we’ll answer some of the questions we see most frequently about choosing a solar installer in New Hampshire.

Blog author image
Article author
Dan Simms is an experienced writer with a passion for renewable energy. As a solar and EV advocate, much of his work has focused on the potential of solar power and deregulated energy, but he also writes on related topics, like real estate and economics. In his free time — when he's not checking his own home's solar production — he enjoys outdoor activities like hiking, mountain biking, skiing and rock climbing.
Reviewer image
Expert reviewer
Karsten is an editor and energy specialist focused on environmental, social and cultural development. His work has been shared by sources including NPR, the World Economic Forum, Marketwatch and the SEIA, and he is certified in ESG with the CFA Institute. Before joining EcoWatch, Karsten worked in the solar energy sector, studying energy policy, climate tech and environmental education. A lover of music and the outdoors, Karsten might be found rock climbing, canoeing or writing songs when away from the workplace.

Comparing authorized solar partners

EcoWatch rating
Average cost
Pros
Cons
BBB Rating
Year founded
Service Area
Brands of Solar Equipment Offered
Warranty Coverage
  • 5.0
    • Most efficient panels on the market
    • National coverage
    • Cradle to Cradle sustainability certification
    • Great warranty coverage
    • Expensive
    • Customer service varies by local dealer
    A+
    Best National Provider
    1985
    SunPower Panels
    25-year all-inclusive warranty

Having trouble deciding? Click below and use our process to receive multiple quotes instead:

Get My Solar Quote