15 Best Solar Companies in Loudon, NH (2025 Reviews)

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

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

Average Loudon homeowner saves $1,602/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated January 24, 2025

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 Loudon

Hoping to go solar but trying to figure out which solar panel installer would be the best one for you? Although it can be difficult to settle on a solar company, the search will pay off because going solar has many great perks. Because solar panels generate their own power, they can greatly reduce your electricity bill each month, if not totally eliminate it. In fact, you could be looking at about $19,000 of savings over 20 years.


As you begin your search for the best solar companies in Loudon, you’ll find that there are many providers to choose between. So, we’ve organized a curated list of the top solar companies in the area.To get an estimate of what it might cost to install solar panels on your roof, you can click the button below to be connected to a certified installer near you.

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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

EcoWatch Rankings for Solar Companies in Loudon

Best Local Installer
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EcoWatch Rating

5.0/5

Sunup Solar

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

Services Offered

  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Battery Storage

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

5.0/5

ReVision Energy

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • 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 Financing Assistance
  • Service icon Community Solar Projects
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Consultation

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

5.0/5

Sunergy Solutions, LLC

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

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance

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

Helios Solar Energy

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Permit Assistance
  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance

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

5.0/5

Solaflect Energy

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

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance
  • Service icon Battery Storage

Website: https://www.solaflect.com/
Address: 326 Main St #4, Norwich, VT 05055
Phone: 8026493700
Outstanding Local Installer
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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 Panel Installation
  • Service icon Financing Assistance
  • Service icon Consultation
  • Service icon Tesla Powerwall
  • Service icon Permit Assistance
  • Service icon Battery Storage

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

4.9/5

Granite State Solar

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation

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

4.9/5

Critical Mass Solar

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

Services Offered

  • Service icon Panel Installation
  • 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

4.9/5

Future Energy Solar

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

Services Offered

  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Financing Assistance

Website: http://futureenergysolar.com/
Address: 21 Olympia Ave unit v, Woburn, MA 01801
Phone: 7819607005
Outstanding Local Installer
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EcoWatch Rating

4.8/5

altE Store

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

Services Offered

  • Service icon Off-Grid Solar Systems
  • Service icon Grid-Tied Solar System
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Battery Storage

Website: https://www.altestore.com/
Address: 330 Codman Hill Rd, Boxborough, MA 01719
Phone: 8778784060
Outstanding Local Installer
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EcoWatch Rating

4.7/5

Solar On Earth

  • 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 Panel Installation
  • Service icon Community Solar Projects
  • Service icon Grid-Tied Solar System

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

4.7/5

Boston Solar

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

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance
  • Service icon Consultation
  • Service icon Battery Storage

Website: https://www.bostonsolar.us/
Address: 12 Gill St #5650, Woburn, MA 01801
Phone: 6176485601
Outstanding Local Installer
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EcoWatch Rating

4.6/5

CommonWealth Energy

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

Services Offered

  • Service icon Panel Installation

Website: https://www.thecommonwealthenergy.com/
Address: 84 Newbury St, Peabody, MA 01960
Phone: 8882608262
Outstanding Local Installer
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EcoWatch Rating

4.5/5

HB Energy Solutions

  • Pros icon Free Quotes
  • 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 Cleaning and Maintenance
  • Service icon Panel Installation

Website: https://www.hbenergy.com/
Address: 132 Bridge St, Springfield, VT 05156
Phone: 8028852300
Outstanding Local Installer
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EcoWatch Rating

4.1/5

Invaleon Technologies Corporation

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

Services Offered

  • Service icon Tesla Powerwall
  • Service icon Panel Installation
  • Service icon Battery Storage

Website: http://www.invaleonsolar.com/
Address: 26 Parkridge Rd #1b, Haverhill, MA 01835
Phone: 8573604906

Methodology: How We Ranked the Best Solar Companies in Loudon

EcoWatch's solar experts analyzed each solar company in Loudon 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 Loudon


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 Loudon

Solar panels are powered by a free energy source — the sun — but before you can take advantage of this you must first pay to set up your panels.Some key things that affect how much it will cost and how much you could save include:

  • Electricity consumption: The average home in Loudon doesn’t use much energy, and therefore may not see as many savings on their power bills.
  • How much energy costs for you: The typical household in Loudon pays around $1,400 a year on home energy use alone, so you could gain that much in savings.
  • Your income and budget: This shapes what model of solar panels you can purchase.
  • Incentives: Tax-paying citizens who install a solar energy system this year can save 0 of their overall solar costs by using the federal solar investment tax credit. You can also save about $19,000 on your energy bills over 20 years excluding incentives.

Solar is a worthwhile investment for most homeowners. You can produce your own electricity instead of paying for it from a utility company and benefit from solar tax credits and rebates, all while helping the environment.

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Adopting a sustainable source of energy can greatly impact both the environment and your bills. To see how much, try out the calculator below. You can also view our solar panel cost guide for Loudon, NH.

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Solar Incentives in Loudon

Since solar power is more sustainable than traditional energy sources, there are some government incentives available to encourage its adoption.On top of the federal solar investment tax credit, there are also some state- and city-level benefits, which in almost all cases, stack with the federal incentive, so you get to save even more. Take a look at our article on solar incentives to learn what incentives you can take advantage of.

Environmental Impact of Switching to Solar in Loudon

Switching to solar energy can have a positive impact on the environment.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Loudon, though. The amount of energy you use is a significant factor to consider. The more energy your household consumes, the greater your impact when you switch to solar energy.While solar panel manufacturing emits carbon dioxide, the panels make up for it by greatly reducing the amount of CO2 you would have been responsible for if you still used nonrenewable energy. In Loudon, you can reduce your carbon footprint by 40 pounds a year with solar panels. As you can see, trading traditional energy for solar has so many other perks besides saving money. One of the main ones is that you can help save the planet too.

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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

EcoWatch's Loudon, NH Solar Company Rankings FAQs

What is the most reputable solar panel company in Loudon?

The highest-rated local solar company in Loudon is Sunup Solar, with a rating of 5.00 stars.

Are solar panels actually good for the environment?

Producing solar panels uses chemicals and produces toxic waste that can be bad for the environment, which is the main drawback of solar panels.

Are solar panels worth it?

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

What are the different types of solar panels?

The different types of solar panels are monocrystalline, polycrystalline and thin-film. Monocrystalline panels are more efficient but also cost more. Polycrystalline panels are cheaper but also less efficient than monocrystalline. Thin-film solar panels are flexible, so they can be used where the other types can’t, like on curved surfaces or cars, but they are also less efficient. The best one for you depends on your budget, the layout of your roof and how much energy generation you want.

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.