15 Best Solar Companies in Cos Cob, CT (2025 Reviews)

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

  • Customer review scores
  • Service area for Cos Cob, CT
  • Company policies and services offered
  • Accreditations and certifications

Average Cos Cob homeowner saves $1,932/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 Cos Cob

If you’re a home or business owner looking to make the most of the solar incentives in Cos Cob, it can be a lot of work to narrow down which installer to go with. But, it's worth it since adopting solar energy is typically a good idea. Due to its moderate amount of average daily sunlight, Cos Cob has a good amount of solar growth, so many of the best solar companies in the country have opened up there to help residents embrace renewable energy.


As you start your search for the best solar companies in Cos Cob, you’ll notice that there are many providers to choose between. So, we’ve put together an expertly curated list of the top solar companies in the area.To see how much you would pay to install solar panels on your roof, you can get a free, no-obligation quote from one of the top solar companies in Cos Cob by clicking the "get quote" button below.

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EcoWatch Rankings for Solar Companies in Cos Cob

Best Local Installer
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EcoWatch Rating

5.0/5

Precision Solar

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

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

SSAY Solar Savings All Year

  • 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 Consultation
  • Service icon System Decommissioning

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

5.0/5

Marcor Solar

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

Services Offered

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

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

Advanced Solar Solutions

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

5.0/5

GreenLeaf 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 Solar Carports
  • Service icon Panel Installation

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

Solar Pro

  • 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 Consultation
  • 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

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
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EcoWatch Rating

5.0/5

Harmony Energy

  • 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 Panel Installation
  • Service icon Consultation

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

Lighthouse Solar - NY

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

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

5.0/5

Solar X - Solar Maintenance Professionals

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

Services Offered

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

Website: http://www.solarxpros.com/
Address: 3455 NJ-66 Suite 3B, Neptune Township, NJ 07753
Phone: 7329926323
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 Free Quotes
  • 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 Skilled Repairs
  • Service icon Cleaning and Maintenance
  • Service icon Tesla Powerwall
  • Service icon Battery Storage

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

4.9/5

Integrity Solar Solutions

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

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Skilled Repairs

Website: http://integritysolarsolutions.com/
Address: 28 New Hempstead Rd suite f, New City, NY 10956
Phone: 8455843100
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Solar Mentor

  • Pros icon Reliable Customer Support
  • Pros icon Prompt Service Delivery
  • Pros icon Clear Pricing Policy
  • 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 Consultation
  • Service icon Cleaning and Maintenance
  • Service icon Financing Assistance

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

4.9/5

J Synergy Green, Inc.

  • 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 Financing Assistance

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

4.9/5

Long Island Power Solutions

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

Website: https://www.lipowersolutions.com/
Address: 2060 Ocean Ave, Ronkonkoma, NY 11779
Phone: 6313480001

Methodology: How We Ranked the Best Solar Companies in Cos Cob

EcoWatch's solar experts analyzed each solar company in Cos Cob 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 Cos Cob


Below are some the criteria we examined specifically for Connecticut 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 Cos Cob

When choosing a solar company, most homeowners or business owners care about the costs above all.The installation cost is just one important factor you should keep in mind when looking into getting solar panels. How much it'll cost and how much you can save depend on things including:

  • System size and type: Some models are more costly than others, so the one you want can raise or lower your initial investment. Plus, the more solar panels you need, the more it'll cost.
  • The amount of sunlight your rooftop gets: Because of Cos Cob’s high amount of average daily sunlight, you should be able to save a decent amount on your energy bills.
  • Your home's power bills: With fairly high monthly electricity bills in Cos Cob, you could save about $1,800 a year with solar.
  • Incentives: One thing that can make your solar project cost less 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 lead to an average of $23,000 of savings over 20 years.

So are solar panels worth it? Whether you’re trying to reduce your energy bills, carbon dioxide emissions or both, solar panels are a great investment for many Cos Cob homeowners.

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Solar Incentives in Cos Cob

Since solar power is better for the environment than burning fossil fuels, there are a number of government incentives available to encourage its adoption.Regardless of what state you live in, you can take advantage of the federal Solar Investment Tax Credit (ITC), which will let you claim 0 of how much you paid for your solar installation when you file taxes, lowering the amount of taxes you owe that year. Additionally, there may be some local incentives that stack with the ITC too. For comprehensive information about incentives for homeowners in Cos Cob, visit our article on solar incentives.

Environmental Impact of Switching to Solar in Cos Cob

A lot of people want to do their part to help the environment, which in many cases is the prime reason for installing solar panels.But you may be curious – how much exactly can you help the planet by making the switch to solar? One thing you should consider is your overall carbon footprint. For example, if you spend a lot of time in the car and have an electric vehicle, you can install solar panels on your home to power your EV and therefore help offset your carbon emissions.While solar panel manufacturing releases carbon dioxide emissions, the panels make up for it by greatly lowering the amount of CO2 you would have released if you still used nonrenewable energy. In Cos Cob, you can reduce your carbon footprint by 40 pounds a year with solar panels. If you want to do your part for the environment, you’ll no doubt get that there are many advantages to adopting solar energy other than just saving money on bills. You can also help preserve the environment, which some would argue is more valuable.

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EcoWatch's Cos Cob, CT Solar Company Rankings FAQs

What is the most reputable solar panel company in Cos Cob?

In Cos Cob, Precision Solar is the most reputable local solar company. Our team of experts rates it 5.00 stars, so it's a great choice if you're planning to add solar panels to your roof.

What is the negative environmental impact of solar panel manufacturing?

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

How long does it take to see a return on your investment after installing solar panels?

Solar panels usually pay for themselves in about 10.9 years, but your solar payback period will vary depending on your utility costs. The higher your typical energy bill, the faster your solar panel system will recoup your installation costs.

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

Solar panel capacity is rated based on the amount 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.