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The 5 Best Solar Companies in Connecticut

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Author Icon Written by Tamara Jude + 1 other Reviewer Icon Reviewed by Roger Horowitz Updated 03/01/2024

You may not think of Connecticut as a big state for solar energy, but the Constitution State has 165 solar companies, according to the Solar Energy Industries Association. With that many options, we researched which solar providers have the most to offer Connecticut homeowners. SunPower and Palmetto made the top of our list, both for their highly energy-efficient solar panels and commitment to customer service.

See which other companies made our list of the best solar companies in Connecticut, plus which solar incentives the state offers to help you save money when switching to solar.


Compare Solar Companies Across Connecticut


Connecticut’s Top Solar Energy Companies

We put 60 solar companies to the test against our methodology, comparing them in categories such as product selection, panel performance, warranty coverage, customer reviews, services, certifications, Better Business Bureau (BBB) rating, and more. The following companies scored highest.

Company Star Rating Warranties Payment Options Link
4.8
25 years Full purchase, loan, lease, PPA GET QUOTE
4.4
10–25 years Full purchase, loan, lease, PPA GET QUOTE
4.4
25 years Full purchase, loan, lease, PPA GET QUOTE
4.4
10–25 years Full purchase, loan, lease, PPA GET QUOTE
4.2
25 years Full purchase, loan, lease GET QUOTE
No results were found.

Our Top Solar Company Picks for CT

The following solar brands earned four or more stars when tested against our methodology:

SunPower: Best High-Efficiency System
Sunrun: Best Solar Panel Leasing
Momentum Solar: Best Installation Process
Palmetto: Best Customer Support
Venture Solar: Best Northeast Installer

SunPower

Best High-Efficiency System
4.8

Pros and Cons

Pros Includes a comprehensive 25-year warranty on all system components Creates fully custom, in-house solar energy systems Offers solar batteries and electric vehicle (EV) chargers as add-ons Cons More expensive than other providers, according to customer reviews Limits customization to only associated brands, namely Maxeon Limits service availability by ZIP code

Why We Chose SunPower

SunPower creates some of the best-performing and highest-quality solar panels. The company uses Maxeon’s solar panels, which easily exceed 25% efficiency. SunPower pairs these panels with other in-house solar components to create a system with all parts optimized to work together.

According to our customer review analysis, SunPower costs more than other solar companies. However, investing in high-quality solar panels yields better long-term savings due to improved system performance and longevity.

Warranty and Financing

Warranty

SunPower includes a 25-year warranty covering all system components and workmanship, and a 92% power output production guarantee.

Financing Options

✔ Full purchase
✔ Loan
✔ Lease
✔ Power purchase agreement (PPA)

Reputation and Awards

SunPower has provided high-efficiency solar panels, components, and batteries since 1985. The company has garnered an excellent reputation throughout this long history. It received PV Magazine’s 2019 Sustainability Award and Good Housekeeping’s 2022 Home Renovation Award in the Biggest Energy Savers category for its SunVault energy storage system.

SunPower is also accredited by the Better Business Bureau (BBB) and holds an A+ rating. Many customers praised SunPower’s high-performing systems and resulting energy savings. However, common complaints noted high prices and difficult communication.

Sunrun

Best Solar Panel Leasing
4.4

Learn more: Sunrun Solar Review

Pros and Cons

Pros Offers a unique insurance plan for system damage and theft Includes free maintenance on leased solar panels Provides 24/7 customer support Cons Offers a shorter warranty to full purchase and loan customers Heavily promotes solar leases, which can negatively impact your return on investment Has received negative customer reviews regarding poor customer service

Why We Chose Sunrun

Sunrun is ideal for homeowners looking to install solar panels on a new home. Its BuilderChoice New Homes Program prioritizes code compliance and provides a dedicated team to handle your project’s building and permitting paperwork. Sunrun also provides excellent long-term protection, as you can opt for equipment damage and theft insurance.

Warranty and Financing

Warranty

Sunrun offers a 10-year warranty for system components, roof penetration, and workmanship to full purchase and loan customers. Leasing customers receive a 25-year warranty with insurance protection for theft and damage.

Financing Options

✔ Full purchase
✔ Loan
✔ Lease
✔ Power purchase agreement (PPA)

Reputation and Awards

Sunrun is accredited by the BBB and holds an A+ rating from the site. During our customer review analysis, we noticed homeowners praising the company’s professionalism and convenient leasing programs. However, be aware that solar leases and PPAs prevent you from owning your system and qualifying for cost-saving solar incentives. Other reviews also mentioned issues with Sunrun’s scheduling and high prices.

DroneDeploy awarded Sunrun with the 2022 Guardian of Safety Award for using drone technology for its site assessments. The company received 14 awards from Comparably in 2021 and 2022, including Best Company Culture, Best CEOs for Diversity, and Best Company for Women.

Momentum

Best Installation Process
4.4

Pros and Cons

Pros Provides support for applying for incentives and rebates Offers a large selection of solar panel brands for customization Includes its own smartphone app for active system monitoring Cons Doesn’t include a system output guarantee Doesn’t offer electric vehicle (EV) charger installation Doesn’t offer its solar battery installation service in Connecticut

Why We Chose Momentum

Momentum Solar provides ample customer support during the solar installation process. The company guides homeowners through every step of the process. Its mobile app and online blog keep customers informed, making the company a solid choice for those who want an active role in their solar system installation. Plus, the brand offers a comprehensive 25-year warranty on its system and workmanship.

Warranty and Financing

Warranty

Momentum Solar provides further peace of mind through its warranty options. The company offers a ​​25-year system warranty. This includes both a 25-year equipment warranty and a 25-year workmanship warranty.

Financing Options

✔ Full purchase
✔ Loan
✔ Lease
✔ Power purchase agreement (PPA)

Reputation and Awards

Momentum Solar is accredited by the BBB and holds an A+ rating from the company. Many reviewers praise Momentum for its solar panel quality and warranty options. More critical reviews mention scheduling difficulties and the company’s tendency to engage in spam calls.

The brand made Solar Power World’s latest list of Top Solar Contractors and was noted by Inc. 500 as one of the fastest-growing private solar companies.

Palmetto

Best Customer Support
4.4

Pros and Cons

Pros Provides an online savings calculator Offers a unique optional protection plan Includes a 25-year panel output warranty Cons Charges an extra monthly fee for active monitoring Limits financing options to cash purchase or solar loan Limits its other warranty options

Why We Chose Palmetto

We like that Palmetto is committed to customer service, providing support via phone, email, and online chat. The company also has an online service request portal and a library of troubleshooting resources. It offers a wide range of solar services, including protection plans and pest abatement, plus a 25-year system performance warranty.

Warranty and Financing

Warranty

Palmetto offers a 25-year panel warranty, 12-year inverter warranty, 10-year workmanship warranty, and five-year roof penetration warranty.

Financing Options

✔ Full purchase
✔ Loan

Reputation and Awards

Palmetto Solar holds accreditation from the BBB and an A+ rating on the site. We noted during our customer review analysis that many homeowners praised Palmetto’s dedicated installation managers and its team’s overall professionalism.

The company received Solar Power World’s Most Forward-Thinking Contractor award in 2022. Inc. Magazine recognized the company with a Power Partner Award the same year.

Venture Solar

Best Northeast Regional Installer
4.2

Pros and Cons

Pros Creates a seamless solar panel system with Venture Roof Jacks Adds a critter guard for extra pest protection Provides a comprehensive 25-year warranty Cons Doesn’t include a workmanship warranty Doesn’t offer online pricing Doesn’t provide a power purchase agreement payment method

Why We Chose Venture

Operating primarily in the Northeast, Venture Solar is especially knowledgeable about the requirements for an efficient Connecticut solar panel system. Its limited service area also helps it to better support customers with acquiring tax incentives to help them save money. The company installs symmetrical solar systems with no visible wiring or mounting devices, which makes it an ideal option for homeowners who care about their home’s appearance.

Warranty and Financing

Warranty

Venture Solar offers its customers a 25-year bumper-to-bumper warranty that includes coverage for product, workmanship, and power output.

Financing Options

✔ Full purchase
✔ Loan
✔ Lease
✔ Power purchase agreement (PPA)

Reputation and Awards

Venture Solar has a great overall reputation. It holds an A+ rating and accreditation on its BBB page. Customers mention Venture’s personable and helpful customer support staff, as well as the comprehensive warranty coverage. The brand also has 4.73 out of 5 stars on SolarReviews.

BBB and other ratings are accurate as of March 2024. 


What Solar Incentives Are Available in Connecticut?

Connecticut property owners who invest in a home solar project may be eligible for various solar incentives, rebates, and tax credits. Nationwide, those purchasing their solar system outright or taking out a solar loan are eligible for the federal solar tax credit. This tax credit, equal to 30% of your system’s total cost, is applied to your federal tax liability to reduce or eliminate your owed balance. 

Here are some additional solar incentives available to residents in Connecticut

  • Energy Efficiency Loan Program: Connecticut residents may be eligible for a low-interest loan of up to $40,000 to invest in a renewable energy system. Loan payments can be added to your monthly electric bill to keep things in one place.
  • Net metering: The state of Connecticut offers a net metering program. These programs allow homeowners with a residential solar system to exchange generated excess energy for credits through their utility company. This is usually at the retail electric rate. If credit remains at the end of the year, the system’s owner gets paid out at the wholesale rate.
  • Property Tax Exemption: Connecticut offers a statewide property tax exemption on residential solar installations. Even though your property’s value may increase from a solar installation, your annual property tax won’t. Connecticut also allows municipalities to offer additional property tax exemptions at their discretion.

Not all solar panel companies are the same. Before making such a big investment, carefully review and compare your options to get the best return on your solar panel installation. We’ve listed a few things to look for below. 

Solar Services

Look for solar companies that offer other services besides solar panel installation. For example, many companies also offer solar battery installation or provide active system monitoring for ongoing support. A company that offers these additional services is committed to ensuring you get the most from your solar power system. Also, look at the company’s years of experience for each service.

Warranties

We recommend looking for companies that offer a 25-year equipment/manufacturer warranty. Solar panels last an average of 25 years, so this warranty ensures they’re protected throughout their lifetime.

We also suggest companies with power performance guarantees that promise a certain power output level for a particular time. A power performance warranty is a marker of a high-quality solar company. A 10-year workmanship or labor warranty is fairly standard, so any company that offers converge beyond that is a reliable choice.

Payment Options

We recommend purchasing solar panels in cash or taking out a solar loan. These solar financing options are the most cost-effective and provide the best return on investment. These payment methods make you the system owner and qualify you for federal and state solar incentives.

Solar leases and power purchase agreements offer fewer financial advantages because the solar company remains the system owner, so you can’t use any solar incentives. We only recommend these payment options if you simply want to generate clean energy and aren’t focused on the long-term financial benefits of ownership.

Customer Support

We recommend you look for companies with multiple forms of customer support, such as phone, email, and online chat, or service forms. If you notice the company offers educational materials online, such as an online blog or videos, this is a sign that it likely cares about keeping you knowledgeable and informed.


What Is the Best Way To Get a Solar Quote in Connecticut?

Below are the common steps for getting a solar quote in Connecticut.

  1. Contact the solar company: Contact the company online or by phone. You’ll need to provide your address for confirmation. Then, you’ll set up a time for a consultation either in-person or virtually, and the company can begin the design process.
  2. Assess your energy needs: During the virtual or in-person consultation, you’ll provide your monthly energy bills to help determine your needed system size and power. We recommend having at least three months of statements handy to account for seasonal fluctuations.
  3. Review your home design and roof space: A company representative will assess your roof space and condition and recommend any required repairs or updates. A virtual consultation may use satellite imaging to assess your home design, but the results can be less accurate.
  4. Build your project: The company will provide a final, itemized quote with a detailed inventory of all required equipment. Add solar batteries or electric vehicle chargers to your system. Review your quote for pricing and warranty information, and discuss available financing options and local solar incentives.

Our Conclusion

Connecticut is a worthwhile state for solar power thanks to its government’s push to increase renewable energy. In 2022, the state committed to zero-carbon emissions from its electricity production by 2040. Connecticut also offers favorable solar incentives to make the transition more affordable.

We recommend SunPower and Sunrun as the top solar contractors in Connecticut. Both companies have overwhelmingly positive customer reviews and sell high-performance panels. SunPower may be a better choice if your top priority is getting the best energy efficiency possible. Sunrun may be a better choice for those seeking solar leasing options.

We recommend comparing at least three solar installation companies and getting a free quote to find the best company and deal for your home.

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FAQ About Solar Companies in CT

Is it worth going solar in CT?

It’s likely worth going solar in CT if your home receives abundant sun exposure and your energy usage causes you to have high energy bills. EnergySage calculates Connecticut’s solar payback period as 7.4–10 years and its electricity bill offset as 79%–107%. These numbers are average to above average, meaning Connecticut residents have the potential for high savings when switching to solar.

How many solar companies are in Connecticut?

The Solar Energy Industries Association reports that Connecticut has 165 solar-related companies—31 are manufacturers, and 65 are installers or developers.

What is the average cost of solar panels in CT?

The average cost of solar panels in CT for a 10-kilowatt system size is $31,761 before applying any solar incentives. The federal solar tax credit reduces this figure to $$22,233.


Our Rating Methodology

The This Old House Reviews Team is committed to providing comprehensive and unbiased reviews to our readers. After over a thousand hours of research on solar companies, interviews with experts, and common customer needs, we’ve created a detailed rating system for solar providers based on six factors:

  • Solar equipment, installation, and services (25%)
  • Warranty and performance guarantees (25%)
  • Brand reputation and certifications (15%)
  • Financing options (15%)
  • Experience (10%)
  • Availability (10%)

Total scores are divided by 20 for a final 5-point rating scale.

To share feedback or ask a question about this article, send a note to our Reviews team at reviews@thisoldhousereviews.com.