15 Best Solar Companies in Londonderry, NH (2024 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Londonderry based on:

  • Customer review scores
  • Service area for Londonderry, NH
  • Company policies and services offered
  • Accreditations and certifications

Average Londonderry homeowner saves $1,720/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated February 01, 2024

Why you can trust EcoWatch

We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Best Solar Companies in Londonderry

Looking for the top solar companies in Londonderry? Installing solar panels is an exciting venture that many homeowners find rewarding for their wallets, communities and the planet. Since the cost of energy is increasing each year, many homeowners are considering investing in solar to save money on electricity for their homes.


If you want to start making use of the many benefits of solar, we can help you narrow down your options to find the Londonderry solar installer that’s perfect for you.To help you find out if solar panels are worth it for your home, you can get a free, no-obligation quote from one of the best solar companies in Londonderry by clicking the button below.

Best National Provider

SunPower

★★★★★
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

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Best Technology

Tesla Energy

★★★★★
3.2

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch Rankings for Solar Companies in Londonderry

Best Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by BlueSel Home Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Maintenance
  • Service icon Solar Panel Upgrades
  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Commercial Panels

Website: https://www.bluesel.com/
Address: 400 W Cummings Park #3425, Woburn, MA 01801
Phone: 7812818130
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Sunergy Solutions, LLC

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Commercial Panels
  • Service icon Full-Service

Website: https://sunergysolutionsllc.com/
Address: 75 Gilcreast Rd STE 210, Londonderry, NH 03053
Phone: 8444276527
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Sunup Solar

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Skilled Repairs
  • Service icon Residential Panels
  • Service icon Maintenance

Website: http://www.sunupsolarnh.com/
Address: Dollard Rd, Auburn, NH 03032
Phone: 6038602509
Outstanding Local Installer
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EcoWatch Rating

3.0/5

SAVKAT SOLAR

  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Prompt Service Delivery
  • Pros icon Reliable Customer Support
  • Pros icon Family-Operated Business
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon EV Charger
  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Maintenance

Website: http://savkat.com/
Address: 4 Tinkham Ave, Derry, NH 03038
Phone: 6033165979
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Helios Solar Energy

  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Prompt Service Delivery
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Consultation

Website: http://www.hssolarpower.com/
Address: 225 Broadway Suite 910, Methuen, MA 01844
Phone: 9783811815
Outstanding Local Installer
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EcoWatch Rating

3.0/5

NE Solar Pros LLC

  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Commercial Panels
  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Residential Panels

Website: http://www.nesolarllc.com/
Address: 60 Blossom St, Nashua, NH 03060
Phone: 6033183232
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Critical Mass Solar

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Prompt Service Delivery
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Financing Assistance

Website: https://www.criticalmasssolar.com/
Address: 33 Leighton St, Pepperell, MA 01463
Phone: 9782721486
Outstanding Local Installer
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EcoWatch Rating

3.0/5

New England Clean Energy - New Hampshire Office

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Residential Panels

Website: https://newenglandcleanenergy.com/contact/new-hampshire-contact/
Address: 264 S River Rd Suite 538, Bedford, NH 03110
Phone: 6034352508
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

ReVision Energy

  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Community Solar Projects
  • Service icon Residential Panels
  • Service icon EV Charger
  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon Maintenance
  • Service icon Financing Assistance

Website: https://www.revisionenergy.com/locations/brentwood-nh-solar-showroom/
Address: 7 Commercial Dr, Brentwood, NH 03833
Phone: 6036791777
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Porter Electrical Contracting

  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Commercial Panels
  • Service icon Residential Panels

Website: https://www.porter-electrical.com/
Address: 26 Cindy Dr, Hooksett, NH 03106
Phone: 6035207696
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Granite State Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Full-Service

Website: https://www.granitestatesolar.com/
Address: 57 Ryan Rd, Bow, NH 03304
Phone: 6033694318
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.0/5

Invaleon Technologies Corporation

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Tesla Powerwall
  • Service icon Commercial Panels

Website: http://www.invaleonsolar.com/
Address: 26 Parkridge Rd #1b, Haverhill, MA 01835
Phone: 8573604906
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Sundial Solar

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Commercial Panels
  • Service icon Consultation
  • Service icon Permit Assistance
  • Service icon Residential Panels

Website: http://sundialsolarnh.com/
Address: 7 Pleasant St Ext, Concord, NH 03301
Phone: 6039610045
Outstanding Local Installer
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EcoWatch Rating

4.7/5

Solar On Earth

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Prompt Service Delivery
  • Con icon Limited information available on website

Services Offered

  • Service icon Community Solar Projects
  • Service icon Skilled Repairs
  • Service icon Residential Panels
  • Service icon Maintenance
  • Service icon Commercial Panels

Website: https://solaronearth.com/
Address: 35 Nagog Park #315, Acton, MA 01720
Phone: 8447652582
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Future Energy Solar

  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Prompt Service Delivery
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Full-Service
  • Service icon Residential Panels
  • Service icon Financing Assistance

Website: http://futureenergysolar.com/
Address: 21 Olympia Ave unit v, Woburn, MA 01801
Phone: 7819607005

Methodology: How We Ranked the Best Solar Companies in Londonderry

EcoWatch's solar experts analyzed each solar company in Londonderry based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Londonderry


Below are some the criteria we examined specifically for New Hampshire solar companies

  • Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
  • Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
  • Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
  • Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
  • Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
  • Availability (10%): The bigger the service area, the higher the company will score.
  • Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
  • Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.

The Cost and Benefits of Solar in Londonderry

The cost of installing a solar panel system has dropped greatly over the past several years, but it’s still a large investment for most homeowners.The installation cost is just one important factor you should keep in mind when looking into installing solar panels. How much it'll cost and how much you can save depend on things including:

  • The kind of solar panel system you can afford: This depends on how much you’re willing to spend upfront.
  • Incentives: Those who purchase and install a solar energy system this year can save 0 of their installation costs by using the federal solar investment tax credit. You can also save about $20,000 on your energy bills over 20 years without incentives.
  • average energy usage: The more energy your home consumes on average and the higher your current power bills are, the more likely you'll benefit from making the switch to solar.
  • How much sunlight your roof gets: If your rooftop doesn’t see much direct sunlight, your solar system won’t be able to generate as much energy, which will give you lower savings on electric bills than someone with a roof that gets a lot of sunlight.

Even though a solar panel system costs a decent chunk of money upfront, it can save you thousands of dollars over time. The question of how much, though, depends on a number of factors, like the kind of solar panels you get and your local electricity rates.

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Solar Incentives in Londonderry

One of the good things about installing a solar panel system is receiving government incentives.These incentives usually consist of cash rebates, tax benefits and/or performance-based incentives. They can lower how much you end up spending on going solar by 0, upwards of 50% in some cases. Take a look at our article on solar incentives to see what incentives you can take advantage of.

Environmental Impact of Switching to Solar in Londonderry

A lot of people want to do what they can to help protect the environment, which in many cases is the chief reason for installing a solar system.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Londonderry, though. Something that can severely influence your carbon footprint is how long your commute is and how much you drive generally. If you install solar panels and drive an electric car, you can vastly decrease your carbon dioxide emissions by charging your car at home.In fact, if you make the switch to solar power, you could expect to reduce your carbon dioxide emissions by about 40 pounds each year. As you can see, trading traditional energy for solar has so many other benefits apart from saving money. One of the most important ones is that you can help save the planet too.

Best National Provider

SunPower

★★★★★
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

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Best Technology

Tesla Energy

★★★★★
3.2

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch's Londonderry, NH Solar Company Rankings FAQs

Which solar company is the best in Londonderry?

In Londonderry, SunPower by BlueSel Home Solar is the top local solar company. Our team of experts rates it 3.00 stars, so it's a solid choice if you're looking to add solar panels to your roof.

Are solar panels actually environmentally friendly?

Solar panels can be harmful for the environment when manufacturers use toxic chemicals when they’re made. Chemicals can make solar panels difficult to dispose of safely once they’ve reached the end of their lifespan. Solar panel manufacturing uses a lot of energy as well. The energy payback period is about 1 to 4 years.

Are solar panels worth it?

Solar panels call for a large upfront investment that usually costs at least ten thousand dollars, but whether or not solar panels are worth it depends on a collection of factors like the cost of electricity near you and the amount of direct sunlight your roof gets.

How often do solar panels have to be replaced?

Though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they stop working completely. What this means is their energy production will have decreased significantly after that point. You can decide to replace them after having them for that long or you can keep using them at a lower efficiency after that time.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.