15 Best Solar Companies in Old Greenwich, CT (2023 Reviews)

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

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

Average Old Greenwich homeowner saves $1,932/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated September 15, 2023

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 Old Greenwich

Looking for the top solar companies in Old Greenwich? Installing a solar panel system is an exciting venture that many homeowners find valuable for their wallets, communities and the planet. Over 20 years of offsetting your energy costs with a solar panel system, you can save about $23,000 on your utility bills.

In this article, we'll help you narrow down the top options in your area. Want to know how much you would pay to install a solar system on your roof? Click "get quote" below to get a free, no-obligation quote from a highly rated Old Greenwich solar installer.

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 Old Greenwich

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Precision Solar

  • 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 Home installations
  • Service icon Expert panel installation
  • Service icon Tailored solutions
  • Service icon Integrated roofing

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

4.3/5

SunPower Corporation

  • 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 Tailored solutions
  • Service icon Energy storage solutions
  • Service icon Home installations
  • Service icon Expert panel installation
  • Service icon Integrated roofing
  • Service icon Business installations

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

3 Sons Solar Energy Solutions

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

Services Offered

  • Service icon Integrated roofing
  • Service icon Expert panel installation
  • Service icon Home installations
  • Service icon Tailored solutions

Website: http://www.3sonsenergy.com/
Address: 100 Smith St, Farmingdale, NY 11735
Phone: 5165865085
Outstanding Local Installer
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EcoWatch Rating

3.0/5

United States Solar Corporation (US Solar)

  • 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 Energy storage solutions
  • Service icon Integrated roofing
  • Service icon Home installations
  • Service icon Tailored solutions

Website: https://www.us-solar.com/
Address: 2150 Post Rd Suite 505, Fairfield, CT 06824
Phone: 2035056969
Outstanding Local Installer
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EcoWatch Rating

4.7/5

SunPower by Kamtech Solar

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

Services Offered

  • Service icon Integrated roofing
  • Service icon Tailored solutions
  • Service icon Home installations
  • Service icon Energy storage solutions
  • Service icon Business installations
  • Service icon Expert 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

Open Solar Works

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

Services Offered

  • Service icon Tailored solutions
  • Service icon Integrated roofing
  • Service icon Expert panel installation
  • Service icon Home installations

Website: https://www.opensolar.works/
Address: 4 W Palisade Ave Suite 1110, Englewood, NJ 07631
Phone: 2014295551
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Emes Solar

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

Services Offered

  • Service icon Energy storage solutions
  • Service icon Expert panel installation
  • Service icon Tailored solutions
  • Service icon Integrated roofing
  • Service icon Home installations
  • Service icon Business installations

Website: http://emessolar.com/
Address: 11 Sunrise Plaza, Valley Stream, NY 11580
Phone: 3477652714
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Ion Solar Pros

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

Services Offered

  • Service icon Energy storage solutions
  • Service icon Expert panel installation
  • Service icon Tailored solutions
  • Service icon Home installations
  • Service icon Business installations

Website: http://www.ionsolarpros.com/
Address: 751 Straits Turnpike Suite 2000, Middlebury, CT 06762
Phone: 8665820000
Outstanding Local Installer
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EcoWatch Rating

3.0/5

SunPower Master Dealer SOLAR

  • 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 Business installations
  • Service icon Home installations
  • Service icon Energy storage solutions
  • Service icon Tailored solutions
  • Service icon Integrated roofing
  • Service icon Expert panel installation

Website: http://www.kamtechsolarny.com/
Address: 117 Bay 8th St, Brooklyn, NY 11228
Phone: 8002945045
Outstanding Local Installer
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EcoWatch Rating

4.3/5

Trinity Solar

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

Services Offered

  • Service icon Home installations
  • Service icon Energy storage solutions
  • Service icon Expert panel installation
  • Service icon Tailored solutions

Website: https://www.trinity-solar.com/
Address: 62 Leone Ln, Chester, NY 10918
Phone: 8777867283
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Sunrun 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 Expert panel installation
  • Service icon Home installations
  • Service icon Energy storage solutions
  • Service icon Tailored solutions

Website: https://www.sunrun.com/
Address: 10 New Maple Ave, Pine Brook, NJ 07058
Phone: 8333245886
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

SunPower by New York State Solar Farm

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

Services Offered

  • Service icon Expert panel installation
  • Service icon Business installations
  • Service icon Energy storage solutions
  • Service icon Integrated roofing
  • Service icon Professional reinstallation
  • Service icon Tailored solutions
  • Service icon Home installations

Website: https://nyssf.com/
Address: 1938 US-44 #55, Modena, NY 12548
Phone: 8452550610
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Invention 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 Tailored solutions
  • Service icon Integrated roofing
  • Service icon Home installations
  • Service icon Expert panel installation

Website: https://www.inventionsolar.com/
Address: 759 Bloomfield Ave #403, West Caldwell, NJ 07006
Phone: 8459209165
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Synergy Smart Homes - Connecticut Solar & Elite SunPower Dealer

  • 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 Tailored solutions
  • Service icon Expert panel installation
  • Service icon Home installations
  • Service icon Business installations
  • Service icon Integrated roofing

Website: https://synergysh.com/
Address: 20 Tuttle Pl Suite 7, Middletown, CT 06457
Phone: 8602451960
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Fusion Solar Energy

  • 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 Expert panel installation
  • Service icon Tailored solutions
  • Service icon Home installations
  • Service icon Integrated roofing

Website: http://www.fusionsolarenergy.org/
Address: 1059 King Georges Post Rd, Edison, NJ 08837
Phone: 8483159390

Methodology: How We Ranked the Best Solar Companies in Old Greenwich

EcoWatch's solar experts analyzed each solar company in Old Greenwich 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 Old Greenwich


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 Old Greenwich

Solar panels run off 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 important things that determine how much it will cost and how much you could save include:

  • Average daily sunlight: Since Old Greenwich gets a decent amount of average daily sunlight, your solar panels can generally produce enough energy to power your whole home, which affects how much your electricity bills will be.
  • average energy usage: The more energy your household consumes on average and the greater your current energy bills are, the more benefits you'll see from making the switch to solar.
  • Your income and budget: This shapes what model of solar panels you can purchase.
  • Incentives: The federal solar investment tax credit currently allows you to decrease your taxes by 30% of the project cost. Your state may also have various incentives that you can use. Additionally, you can save about $23,000 over 20 years on your utility bills, before factoring in incentives.

Although a solar panel system costs a good chunk of money upfront, it can save you thousands of dollars over the lifespan of your panels. The question of how much, though, depends on several factors, including the size of your house and your energy consumption.

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Solar Incentives in Old Greenwich

Because solar power is a cleaner source of energy than burning fossil fuels, there are quite a few government incentives in place to encourage people to make the switch. These incentives typically include cash rebates, tax breaks and/or performance-based incentives. They can cut the cost you pay for going solar by 30%, upwards of 50% in some cases. In our article on solar incentives, you can find out about the incentives you qualify for in Old Greenwich.

Environmental Impact of Switching to Solar in Old Greenwich

There are lots of reasons to trade traditional energy for solar energy, like saving money on electricity bills and helping to reduce your carbon footprint. Something many people might be wondering about is how much can they really help protect the environment by switching to solar power anyway? The average person has a rather large carbon footprint. Between their car, which releases over 10,000 pounds of carbon dioxide emissions each year, and energy for their home, it can be overwhelming to think about what to do. Switching to solar is a practical thing you can do to help. In fact, if you adopt solar power, you could reduce your carbon dioxide emissions by about 40 pounds each year. As you can see, trading traditional energy for solar has so many other benefits beyond saving money. One of the major ones is that you can help save the Earth too.

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 Old Greenwich, CT Solar Company Rankings FAQs

What is the most reputable solar company in Old Greenwich?

The best local solar company in Old Greenwich is Solarmentor.com, with a rating of 4.13 stars.

What are the best and worst things about solar power?

A few of the biggest pros are that it lowers your power bills, it's environmentally friendly, and it can give you a significant return on your investment (ROI). The most notable cons are that solar panels don't work as well when there's limited direct sunlight, there is a high upfront cost and solar panels can be an eyesore.

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 a lot of direct sunlight or your power bills are already reasonably low, solar panels might not be for you.

When should I install solar panels?

You can put up solar panels whenever it's convenient for you, but consider doing so in the winter when the demand is less. With fewer homeowners switching to solar, you could potentially see quicker installation times and more savings.

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.