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

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

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

Average Greenlawn homeowner saves $1,842/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

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 Greenlawn

Thinking of going solar but still deciding on which company would be the best one for you? Although it can be hard to choose a solar company, the effort will pay off because going solar has many good benefits. After 20 years of offsetting your energy costs with a solar panel system, you can save about $22,000 on your power bills.


In this article, we’ll review the top Greenlawn solar installers so you can make the best choice for your home’s renewable energy needs.Read on to see our picks for the best solar companies in the city, or get connected with a highly rated solar company in your area right away by clicking the button below.

Advertisement

EcoWatch Rankings for Solar Companies in Greenlawn

Best Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Marcor Solar

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

Services Offered

  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Financing Assistance

Website: https://www.marcorsolar.com/
Address: 135 Dale St, West Babylon, NY 11704
Phone: 6313549106
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Leviathan Solar

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

Services Offered

  • Service icon Panel Installation

Website: https://leviathansolar.com/
Address: 1993 Pond Rd, Ronkonkoma, NY 11779
Phone: 6315532732
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

GreenLeaf 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 Solar Carports
  • Service icon Panel Installation

Website: https://gogreenleafsolar.com/
Address: 11 Technology Dr, Setauket- East Setauket, NY 11733
Phone: 6315091747
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Harmony Energy

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

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation

Website: http://www.harmonyenergy.org/
Address: 80 Orville Dr, Bohemia, NY 11716
Phone: 6312441679
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Precision Solar

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

Website: https://precisionsolarenergy.com/
Address: 445 Hamilton Ave #1102, White Plains, NY 10601
Phone: 9142205877
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Advanced Solar Solutions

  • 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

Website: http://advancedsolarny.com/
Address: 14134 71st Ave, Queens, NY 11367
Phone: 3474558430
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Solar Pro

  • 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 Permit Assistance
  • Service icon Panel Installation
  • Service icon Consultation

Website: https://www.solarprony.com/
Address: 139 Stuyvesant Ave, Brooklyn, NY 11221
Phone: 7189627699
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

SSAY Solar Savings All Year

  • Pros icon Informative Resources
  • 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 Consultation
  • Service icon Panel Installation
  • Service icon System Decommissioning

Website: http://www.solarsavingsallyear.com/
Address: 8 Rusten Ln, Nanuet, NY 10954
Phone: 8084890251
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Solar X - Solar Maintenance Professionals

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

Services Offered

  • Service icon System Decommissioning
  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation

Website: http://www.solarxpros.com/
Address: 3455 NJ-66 Suite 3B, Neptune Township, NJ 07753
Phone: 7329926323
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Synergy Smart Homes - Connecticut Solar & Elite SunPower Dealer

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

Website: https://www.solarinstallationcontractor.com/
Address: 20 Tuttle Pl Suite 7, Middletown, CT 06457
Phone: 8603415001
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Long Island Power Solutions

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

Website: https://www.lipowersolutions.com/
Address: 2060 Ocean Ave, Ronkonkoma, NY 11779
Phone: 6313480001
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

NYS Essential Power

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

Services Offered

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

Website: https://www.nysessentialpower.com/
Address: 13 Trade Zone Dr, Ronkonkoma, NY 11779
Phone: 6314002680
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

J Synergy Green, Inc.

  • 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 Financing Assistance
  • Service icon Panel Installation

Website: http://www.jsynergyllc.com/
Address: 99 Main St, East Rockaway, NY 11518
Phone: 5163312020
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Solar Mentor

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

Services Offered

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

Website: https://www.solarmentor.com/
Address: 16426 Metcalf Ave, Flushing, NY 11365
Phone: 7183742629
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Mpower Solar

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

Website: https://www.mpowersolar.com/
Address: 150 Kenilworth Pl, Brooklyn, NY 11210
Phone: 8006774812

Methodology: How We Ranked the Best Solar Companies in Greenlawn

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


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 Greenlawn

The cost of putting up solar panels has decreased significantly in the past few years, but it’s still a large investment for most homeowners.The overall price and potential savings vary depending on a few key factors such as:

  • The make and model of solar panels you want to get: Some are more costly, so that will affect your budget for your solar project.
  • Incentives: One thing that can reduce the cost of your solar project is the solar investment tax credit (ITC), which is a tax credit that’s equal to a percentage of the project cost. You can also save money on your power bills, which can result in an average of $22,000 of savings over 20 years.
  • Energy consumption: Installing solar panels may be too pricey an option for families that don’t need a good amount of energy per month.
  • The cost of energy for you: If your local utility rates are high, there's a better chance you'll get a higher return on your investment in a solar panel system. In Greenlawn, you can save an average of $1,525 a month on your electricity bills.

So is a solar panel system worth it? Whether you’re trying to lower your electric bills, carbon dioxide emissions or both, solar panels are a good investment for many Greenlawn homeowners.

Solar Savings Calculator for {{ solarcalc.name }}

To find out how much you can impact the environment and your wallet by making the switch to solar, try out the calculator below. You can also view our solar panel cost guide for Greenlawn, 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. GET ESTIMATE

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 Greenlawn

Adopting solar power has plenty of considerable benefits. Not only can it help protect the environment, but you can also save some money on your installation with various government incentives.You are eligible for the federal solar investment tax credit (ITC) for the tax year you turn on your a solar panel system. You can also potentially stack the ITC with other local rebates and benefits. In our article on solar incentives, you can see the incentives you qualify for near you.

Environmental Impact of Switching to Solar in Greenlawn

Many want to do their part to help protect the environment, which in many cases is the main reason for installing a solar system.But how much can installing solar panels actually affect the environment? According to the EPA, electricity generation is the second largest source of greenhouse gas emissions and about 62% of our electricity is produced by burning fossil fuels. Switching to a clean energy source like solar power can help reduce that number in a city like Greenlawn that generates a large amount of carbon dioxide emissions each year.Although making solar panels releases carbon dioxide emissions, the panels make up for it by significantly reducing the amount of CO2 you would have released if you still used nonrenewable energy. In Greenlawn, you can reduce your carbon footprint by 100 pounds a year with solar panels. As you can see, using solar power has so many other rewards outside of saving money. One of the major ones is that you can help save the Earth too.

Advertisement

EcoWatch's Greenlawn, NY Solar Company Rankings FAQs

Which solar installation company is the best near me?

The top local solar company in Greenlawn is Marcor Solar, with a rating of 5.00 stars.

What is the negative environmental impact of solar panel manufacturing?

Manufacturing solar panels requires chemicals and produces toxic waste that can be harmful for the environment, which is the main downside of solar panels.

How long does it take for solar to pay for itself?

Solar panels typically pay for themselves in about 11.1 years, but your solar payback period will vary depending on your utility costs. The higher your typical electricity bill, the faster your solar panel system will pay for itself.

What is solar panel capacity and how much do I need for my house?

Solar panel capacity is rated depending on how many watts of power they produce under standard testing conditions. Since each panel can typically produce about 250 to 400 watts per hour, the average home will need 20 to 35 panels.

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.