15 Best Solar Companies in Port Jefferson, NY (2025 Reviews)

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

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

Average Port Jefferson homeowner saves $1,842/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 Port Jefferson

As a homeowner or business owner in Port Jefferson, you may be planning on switching to solar power and wondering about the best solar companies in your city. Solar could be a good choice since it has many perks. Solar panels aren't just good for the Earth — your budget will benefit too. With solar power, you can save an average of $22,000 over 20 years, and this doesn't even include incentives.


As you set out on your search for the best solar companies in Port Jefferson, you might see that there are many providers to choose between. So, we’ve accumulated an expertly curated list of the top solar companies in the area.To get free quotes from the best solar companies in Port Jefferson, you can click "get quote" 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 Port Jefferson

Best Local Installer
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EcoWatch Rating

4.8/5

Kamtech Solar Solutions

  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: http://kamtechsolar.com/
Address: 203 B Sheridan Blvd, Inwood, NY 11096
Phone: 7187362862
Outstanding Local Installer
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EcoWatch Rating

3.0/5

SunPower

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

Website: http://us.sunpower.com/
Address: 400 Executive Blvd Suite 137, Elmsford, NY 10523
Phone: 8007867693
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Ion Solar Pros

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

Website: http://www.ionsolarpros.com/
Address: 751 Straits Turnpike Suite 2000, Middlebury, CT 06762
Phone: 8605445362
Outstanding Local Installer
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EcoWatch Rating

5.0/5

GreenLeaf Solar

  • 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 Panel Installation
  • Service icon Solar Carports

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

5.0/5

Leviathan Solar

  • 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://leviathansolar.com/
Address: 1993 Pond Rd, Ronkonkoma, NY 11779
Phone: 6315532732
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Harmony Energy

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

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation

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

5.0/5

Marcor Solar

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

Services Offered

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

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

5.0/5

Precision Solar

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

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

5.0/5

Advanced Solar Solutions

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

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation

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

5.0/5

Solar Pro

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

Services Offered

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

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

5.0/5

Synergy Smart Homes - Connecticut Solar & Elite SunPower Dealer

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

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

5.0/5

SSAY Solar Savings All Year

  • 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 Consultation
  • Service icon System Decommissioning
  • Service icon Panel Installation

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

4.9/5

Long Island Power Solutions

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

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

4.9/5

NYS Essential Power

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

Services Offered

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

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

4.9/5

GreenLogic Energy

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • 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 Consultation
  • Service icon Panel Installation

Website: https://www.greenlogic.com/
Address: 97 N Sea Rd #3, Southampton, NY 11968
Phone: 6317715152

Methodology: How We Ranked the Best Solar Companies in Port Jefferson

EcoWatch's solar experts analyzed each solar company in Port Jefferson 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 Port Jefferson


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 Port Jefferson

Solar panels are powered by a free energy source — the sun — but before you can take advantage of this you will first need to pay to set up your system.Some significant things that influence the upfront cost and potential savings over time include:

  • The type of solar panel system you can afford: This is dependent on how much you’re willing to spend upfront.
  • How much electricity your home consumes: Households that use lots of electricity each month may require more solar panels and, as a result, more upfront cost, but will also save more on their energy bills over time.
  • How much sunlight your roof gets: If your roof doesn’t get a lot of direct sunlight, your solar panel system won’t be able to generate as much energy, which will leave you with lower savings on electric bills than someone with a roof that gets a lot of sunlight.
  • The cost of energy for you: If your local utility rates are high, there's a good chance you'll see a higher return on your investment in a solar panel system. In Port Jefferson, you can save an average of $1,525 a month on your electricity bills.

Although a solar panel system costs a good 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 amount of daily direct sunlight available and your energy consumption.

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Solar Incentives in Port Jefferson

Although a solar power system is typically a large investment, it can save you a substantial amount of money over several years due to reduced utility bills and government incentives.On top of the federal tax credit incentive, there are also some state- and city-level incentives, which in most cases, stack with the federal incentive, so you can save even more. You can find out about the incentives you can take advantage of in our article on solar incentives

Environmental Impact of Switching to Solar in Port Jefferson

Swapping traditional energy for solar is a great way to do your part for a more environmentally-friendly future.You may be trying to figure out – how much does making the switch do for the environment anyway? An important thing to think about is your overall carbon footprint. For example, if you spend a lot of time driving to work, your footprint may be greater, so adopting solar energy for your house can help offset that.If you go solar, your carbon footprint can be reduced by about 100 pounds each year. If you care about the environment, you’ll most likely recognize that there are many benefits of adopting solar energy other than just saving money on bills. You can also help preserve the environment, which some would argue is worth more.

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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 Port Jefferson, NY Solar Company Rankings FAQs

Which solar company is the best in Port Jefferson?

The highest-rated local solar company in Port Jefferson is Kamtech Solar Solutions, with a rating of 4.80 stars.

What are a few of the main pros and cons of going solar?

A few of the biggest pros are that it reduces your electricity bills, it’s a sustainable source of energy, and it can provide a good return on your investment (ROI). The most notable cons are that solar panels don’t produce electricity at night, they cost a lot upfront and solar panels aren’t always aesthetically pleasing.

Are solar panels worth it?

Solar panels can be a fruitful investment for many 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 fairly low, solar panels might not be for you.

How often do solar panels need to be replaced?

Even though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they stop working completely. What this means is how much energy they produce will have decreased significantly after that point. You can decide to replace them after having them for that long or you can continue to use 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.