15 Best Solar Companies in Nassau, NY (2025 Reviews)

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

  • Customer review scores
  • Service area for Nassau, NY
  • Company policies and services offered
  • Accreditations and certifications

Average Nassau homeowner saves $1,080/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 Nassau

When you’re trying to find the best solar companies in Nassau, combing through hundreds of options can be intimidating, but it can pay off since switching to solar energy can offer so many fantastic perks. On average, you can save $13,000 over 20 years with solar panels. And because solar panels last about 25 to 30 years, your total cost savings will be much higher than that overall.


If you want to start making use of the great amount of benefits of solar, we can help you narrow down your options to find the Nassau solar installer that’s right for you.Read on to see our picks for the top solar companies in the city, or get connected to a highly rated solar company near you right away by clicking the button below.

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Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

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 Nassau

Best Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

New England Solar + Green

  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Battery Storage

Website: http://www.nesolarandgreen.com/
Address: 65 North St, Williamstown, MA 01267
Phone: 4134584966
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Northeast Solar

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

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Panel Installation
  • Service icon Solar Carports

Website: https://northeast-solar.com/
Address: 136 Elm St, Hatfield, MA 01038
Phone: 4132476045
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Lighthouse Solar - NY

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

Services Offered

  • Service icon Grid-Tied Solar System
  • Service icon Financing Assistance
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Skilled Repairs

Website: https://www.lighthousesolarny.com/
Address: 4 Cherry Hill Rd, New Paltz, NY 12561
Phone: 8454173485
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Valley Solar

  • 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 Battery Storage
  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Solar Carports
  • Service icon Cleaning and Maintenance
  • Service icon Off-Grid Solar Systems

Website: http://valleysolar.solar/
Address: 116 Pleasant St Suite 321, Easthampton, MA 01027
Phone: 4135848844
Outstanding Local Installer
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EcoWatch Rating

4.8/5

SunCommon

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

Services Offered

  • Service icon Tesla Powerwall
  • Service icon Community Solar Projects
  • Service icon Panel Installation
  • Service icon Grid-Tied Solar System
  • Service icon Battery Storage

Website: http://suncommon.com/
Address: 1155 Flatbush Rd, Kingston, NY 12401
Phone: 8664527652
Outstanding Local Installer
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EcoWatch Rating

4.8/5

PV Squared Solar (Pioneer Valley Photovoltaics)

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

Services Offered

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

Website: http://www.pvsquared.coop/
Address: 311 Wells St, Greenfield, MA 01301
Phone: 4137728788
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Insight Solar

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

Services Offered

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

Website: https://www.getinsightsolar.com/
Address: 59C North St, Hatfield, MA 01038
Phone: 4133387555
Outstanding Local Installer
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EcoWatch Rating

4.6/5

Kasselman Solar

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

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance
  • Service icon Grid-Tied Solar System
  • Service icon Battery Storage

Website: https://kasselmansolar.com/
Address: 279 Broadway Building 2, Menands, NY 12204
Phone: 5184788365
Outstanding Local Installer
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EcoWatch Rating

4.6/5

Solar Generation

  • 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 Panel Installation
  • Service icon Community Solar Projects
  • Service icon Off-Grid Solar Systems
  • Service icon Cleaning and Maintenance
  • Service icon Consultation

Website: http://www.solargeneration.net/
Address: 929 NY-28, Kingston, NY 12401
Phone: 8456796997
Outstanding Local Installer
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EcoWatch Rating

4.5/5

AEC Solar

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

Services Offered

  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Tesla Powerwall
  • Service icon Panel Installation
  • Service icon Solar Carports

Website: http://aecsun.com/
Address: 210 Washington Ave Ext, Albany, NY 12203
Phone: 5182138786
Outstanding Local Installer
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EcoWatch Rating

4.5/5

PosiGen

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

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Permit Assistance
  • Service icon Consultation

Website: https://www.posigen.com/
Address: 280 Moody St, Ludlow, MA 01056
Phone: 4132389281
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Seed Solar, Electric and Engineering

  • 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 Cleaning and Maintenance
  • Service icon Consultation
  • Service icon Panel Installation

Website: http://seedsolar.com/
Address: 405 Jordan Rd, Troy, NY 12180
Phone: 8005800248
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Beyond Green Construction

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Family-Operated Business
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: http://www.beyondgreen.biz/
Address: 13 Terrace View, Easthampton, MA 01027
Phone: 4135290544
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

High Peaks Solar

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

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Solar Carports
  • Service icon Consultation

Website: http://www.highpeakssolar.com/
Address: 180 Main Ave, Wynantskill, NY 12198
Phone: 5182096727
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Sunbug Solar

  • Pros icon Informative Resources
  • 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 Cleaning and Maintenance

Website: http://sunbugsolar.com/
Address: 66 Westfield Industrial Park Rd, Westfield, MA 01085
Phone: 4138841000

Methodology: How We Ranked the Best Solar Companies in Nassau

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


Below are some the criteria we examined specifically for New York 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 Nassau

Solar panels run off a free energy source — the sun — but before you can take advantage of this you first need to pay to set up your system.The installation cost is just one important factor you should bear in mind when looking into installing solar panels. How much it'll cost and how much you can save depend on things including:

  • How much energy your home consumes: Households that need lots of energy each month may call for more solar panels and, consequently, be more costly, but will also enjoy more savings over time.
  • The make and model of solar panels you’re planning on getting: More high-tech panels cost more, so that will influence your budget for your solar project.
  • Incentives: The federal solar investment tax credit, which everyone in the U.S. is eligible for, allows you to deduct 0 of the cost of your solar system installation from your federal taxes. Plus, not including incentives, you can save about $13,000 over 20 years on your energy bills.
  • Your current power bills: Solar panels can substantially decrease, or completely get rid of, your utility bills. In Nassau, you can save an average of $826 a month.

Though a solar panel system costs a sizable chunk of money upfront, it can save you a considerable amount in the long term. The question of how much, though, depends on a number of factors, such as the amount of daily direct sunlight available and your current power bills.

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Solar Incentives in Nassau

In order to increase solar panel installation and usage, federal and local governments – and even some utility companies – offer incentives to help make switching to solar power more economically viable and accessible.Regardless of what state you live in, you can take advantage of the federal Solar Investment Tax Credit (ITC), which will allow you to claim 0 of your project costs on your tax return, lowering the amount of taxes you owe that year. Plus, there may be some local incentives that stack with the ITC too. Our article on solar incentives has more in-depth information on the incentives you can take advantage of in Nassau.

Environmental Impact of Switching to Solar in Nassau

A lot of people want to do what they can to help protect the planet, which in many cases is the chief reason for installing a solar system.Something many people might be thinking about is how much can they really help the environment by going solar anyway? According to the EPA, electricity production is the second largest source of greenhouse gas emissions and about 62% of our electricity comes from burning fossil fuels. Using solar power can help bring down that number in a city like Nassau that is responsible for a fair amount of carbon dioxide emissions each year.Since solar panels don’t release CO2 emissions into the atmosphere when producing electricity, they’re a good substitute for traditional energy sources. In fact, you could lower your carbon dioxide emissions by about 20 pounds each year. For people who are concerned about the environment, the upfront cost of solar is a small price to pay for the offset carbon emissions.

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Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

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 Nassau, NY Solar Company Rankings FAQs

Which solar power company is the best near me?

The best local solar company in Nassau is New England Solar + Green, with a rating of 5.00 stars.

Are solar panels really good for the environment?

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

Are solar panels worth it?

Solar panels can be a great investment for lots of homeowners, but admittedly, they might not be worth it for everyone. If your home doesn't get enough sunlight or your energy bills are already pretty low, solar panels might not be for you.

What are the different types of solar panels?

There are three main types of solar panels: monocrystalline, polycrystalline and thin-film. As for efficiency and price, monocrystalline has the highest for both, then polycrystalline, and then thin-film. The best choice for you is highly influenced by your roof configuration, your budget and desired energy output.

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.