15 Best Solar Companies in Nassau, NY (2024 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 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 Nassau

Looking to go solar but not sure which solar panel installer would be the best one for you? Although it can be challenging to settle on a solar company, the effort will pay off because going solar has many great perks. On average, your family can save $13,000 over 20 years after installing a solar panel system. And because solar panels last about 25 to 30 years, your total cost savings will be much higher than that overall.


Here, we’ll narrow down some of the best solar companies in Nassau to make your decision a little easier.To see how much you might have to pay to put up a solar panel system on your roof, you can get a free, no-obligation quote from one of the top solar companies in Nassau by clicking the "get quote" 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 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

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 Commercial Panels
  • Service icon Battery Storage
  • Service icon Financing Assistance
  • Service icon Residential Panels

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

EcoWatch Rating

3.0/5

High Peaks Solar

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

Services Offered

  • Service icon Solar Carports
  • Service icon Battery Storage
  • Service icon Maintenance
  • Service icon Consultation
  • Service icon Commercial Panels
  • Service icon Residential Panels

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

EcoWatch Rating

3.0/5

Seed Solar, Electric and Engineering

  • 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 Commercial Panels
  • Service icon Maintenance
  • Service icon Consultation
  • Service icon Residential Panels

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

EcoWatch Rating

5.0/5

New England Solar + Green

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

Services Offered

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

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

EcoWatch Rating

4.4/5

AEC Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • 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 Consultation
  • Service icon Commercial Panels
  • Service icon Residential Panels

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

EcoWatch Rating

3.0/5

BPVS

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

Services Offered

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

Website: http://www.bpvs.com/
Address: 60 Roberts Dr #109, North Adams, MA 01247
Phone: 4136640152
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

SunCommon

  • Pros icon Prompt Service Delivery
  • 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 Community Solar Projects
  • Service icon Residential Panels
  • Service icon Battery Storage
  • Service icon Commercial Panels
  • Service icon Tesla Powerwall

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

EcoWatch Rating

5.0/5

Northeast 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 Residential Panels
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Commercial Panels
  • Service icon Consultation

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

EcoWatch Rating

4.9/5

Valley Solar

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

Services Offered

  • Service icon Battery Storage
  • Service icon Commercial Panels
  • Service icon Financing Assistance
  • Service icon Tesla Powerwall
  • Service icon Maintenance
  • Service icon Solar Carports
  • Service icon Consultation
  • Service icon Off-Grid Solar Systems
  • Service icon Full-Service
  • Service icon Residential Panels

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

EcoWatch Rating

4.9/5

Insight Solar

  • 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 Consultation
  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Solar Roof Assessment

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

EcoWatch Rating

4.7/5

PV Squared Solar (Pioneer Valley Photovoltaics)

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

Services Offered

  • Service icon Battery Storage
  • Service icon Commercial Panels
  • Service icon Maintenance
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Consultation

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

EcoWatch Rating

4.6/5

Solar Generation

  • 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 Off-Grid Solar Systems
  • Service icon Community Solar Projects
  • Service icon Financing Assistance
  • Service icon Maintenance
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Commercial Panels

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

EcoWatch Rating

3.0/5

Grenergy Solar Store, LLC

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

Services Offered

  • Service icon Residential Panels
  • Service icon Maintenance
  • Service icon EV Charger
  • Service icon Battery Storage

Website: https://www.grenergysolar.com/
Address: 520 Sheffield Plain, Sheffield, MA 01257
Phone: 4132290049
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Lighthouse Solar - NY

  • Pros icon Free Quotes
  • 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 Commercial Panels
  • Service icon Grid-Tied Solar System
  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Consultation
  • Service icon Residential Panels

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

EcoWatch Rating

4.6/5

PosiGen

  • 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 Consultation
  • Service icon Maintenance
  • Service icon Energy Efficiency Audit
  • Service icon Residential Panels
  • Service icon Solar Panel Upgrades
  • Service icon Permit Assistance

Website: https://www.posigen.com/
Address: 280 Moody St, Ludlow, MA 01056
Phone: 4132389281

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

While solar panels can save you money on energy bills over time, it’s important to know the startup costs.There are a few factors you should consider when trying to figure out how much it will cost and how much you can save, including:

  • How much energy your home consumes: Homes that consume a lot of power each month may need more solar panels and, consequently, be more costly, but will also benefit more over time.
  • The make and model of solar panels you want to get: Higher-efficiency panels are more expensive, so that will affect your budget for your solar project.
  • Incentives: The federal solar investment tax credit, which everyone in the U.S. is eligible for, lets you deduct 0 of the cost of installing your solar panel system from your taxes. In addition, not including incentives, you can save about $13,000 over 20 years on your energy bills.
  • Your power bills: This will influence how much you can save. In Nassau, the average homeowner can save about $830 a year on their electricity bills.

So are solar panels worth it? Whether you want to reduce your electricity costs, carbon dioxide emissions or both, solar panels are a great investment for many Nassau homeowners.

Solar Savings Calculator for {{ solarcalc.name }}

For an idea of both how much you could save and help the Earth by installing a solar panel system, you can try out the calculator below. You can also view our solar panel cost guide for Nassau, NY.

{{ solarcalc.time_period|number:0 }} -year savings {{ solarcalc.total_savings()|currency }}
Estimated cost {{ solarcalc.array_cost() | currency }}
Estimated incentives {{ solarcalc.incentive_savings() | currency }}
Payback period {{ solarcalc.payback_period()|number:1 }} years
CO2 emissions prevented {{ solarcalc.CO2_total()|number:0 }} lbs
Miles driven equivalent {{ solarcalc.CO2_total()/0.78|number:0 }} mi
Why leave {{ solarcalc.total_savings()|currency }} on the table? Help the environment and your wallet by switching to solar. SAVE NOW

Electricity rate:
{{ solarcalc.elec_cost/10 }} ¢
Shade:
{{ solarcalc.shade }} %
Time period:
{{ solarcalc.time_period }} years
System size:
{{ solarcalc.system_size }} kW
Additional Incentives:
{{ solarcalc.additional_incentives|currency }}

Switching to solar in {{ solarcalc.name }} can save you {{ solarcalc.total_savings() | currency }} over the course of {{ solarcalc.time_period|number:0 }} years.

Solar Incentives in Nassau

There are many reasons why you should switch to solar. One of them involves some government incentives that can save you money.When you install a solar panel system on your home, you can claim the federal tax credit, or ITC. This credit currently reduces your tax bill by 0 of the cost of your solar panels. In addition, there may often be some state and city incentives that you can take advantage of to further cut back on the cost of solar of solar panels. Our article on solar incentives has more detailed information on the incentives you can benefit from in Nassau.

Environmental Impact of Switching to Solar in Nassau

Installing solar panels can have a beneficial effect on the environment.But how much can installing solar panels actually affect the environment? For those who want to do their part for the planet, switching to solar power is a no-brainer, especially since Nassau produces a fair amount of carbon dioxide emissions from its energy generation.Though solar panel manufacturing releases carbon dioxide emissions, the panels make up for it by considerably lowering the amount of CO2 you would have been responsible for if you still used nonrenewable energy. In Nassau, you can reduce your carbon footprint by 20 pounds a year with solar panels. For homeowners who are concerned about the environment, the upfront cost of solar is a small price to pay for reducing your carbon footprint.

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 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

What is the best solar panel company in Nassau?

In Nassau, Kasselman Solar is the best local solar company. Our team of experts rates it 4.60 stars, so it's a great choice if you're planning to add solar panels to your house.

What is the negative environmental impact of solar panel manufacturing?

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

Is it worth putting solar panels on my house?

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

What are the different kinds 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 the layout of your roof, 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.