Connecticut’s solar panel installation sector showcases a robust dedication to renewable energy. Affordability and sustainability drive innovation, leading companies to adopt advanced technologies while striving to meet increasing demand. Operating primarily in residential and commercial realms, firms provide custom solutions like energy storage and electric vehicle integration along with traditional solar setups. As governmental incentives and public interest grow, the industry heads toward substantial expansion, promising a cleaner energy future for the state and beyond.

The listed companies represent a mix of sizes and specialties in the Connecticut solar market. Ranging from startups founded just a few years ago to well-established providers, these firms operate primarily from urban centers. With employee counts varying from small teams to larger organizations, many focus on tailored solar installations and comprehensive energy solutions, showcasing strong commitments to environmental consciousness and client satisfaction.

Continue reading to explore the top solar panel installation companies in Connecticut.

Top 21 Solar Energy Companies in Connecticut

1. Greenskies Clean Focus

• Website: greenskies.com
• Ownership type: Private Equity
• Headquarters: North Haven, Connecticut, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: October 2023
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: greenskies-clean-energy

Greenskies Clean Focus is a solar energy provider based in North Haven, Connecticut, specializing in renewable energy solutions tailored for municipalities, schools, nonprofits, and commercial entities. Founded in 2009, the company has developed a robust portfolio, having constructed over 320 MW of renewable energy facilities across more than 600 sites in 19 states. Greenskies offers a comprehensive range of services, including project financing, operations and maintenance, and solar installations. Their innovative approach allows clients to transition to solar energy without upfront costs, utilizing Power Purchase Agreements (PPAs) to facilitate savings from day one. The company has been recognized for its significant contributions to the solar industry, being ranked as the number one commercial solar developer in the Northeast and among the top three in the U.S. based on cumulative kW installed. Greenskies is committed to fostering long-term partnerships with its clients, ensuring operational excellence and sustainability in their projects.

2. EcoSmart Home Services

• Website: ecosmartct.com
• Ownership type: Private
• Headquarters: Berlin, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1985
• Headcount: 11-50
• LinkedIn: ecosmart-home-services

EcoSmart Home Services, based in Berlin, Connecticut, has been a fixture in the home improvement industry since its founding in 1985. The company specializes in energy efficiency solutions, offering a wide range of services that include solar panel installations, energy audits, HVAC systems, insulation, and electrical work. With a team of 11 to 50 employees, EcoSmart focuses on helping homeowners reduce energy costs and improve comfort through sustainable practices. Their approach is not just about installing solar panels; they conduct comprehensive energy audits to identify areas for improvement, ensuring that solar solutions are tailored to each home’s unique needs. EcoSmart is committed to educating clients about the benefits of solar energy and the financial incentives available, such as tax credits and utility programs. This educational focus, combined with their extensive experience in the industry, positions EcoSmart as a knowledgeable partner for homeowners seeking to transition to solar energy and enhance their overall energy efficiency.

3. Empower Energy Solutions

• Website: empowerenergy.co
• Ownership type: Private
• Headquarters: Darien, Connecticut, United States (USA)
• Employee distribution: United States (USA) 84%, United Arab Emirates 5%, Pakistan 5%, Other 5%
• Founded year: 2013
• Headcount: 51-200
• LinkedIn: empower-energy-solutions-inc

Empower Energy Solutions, based in Darien, Connecticut, is a private solar energy provider that has been operational since 2013. The company specializes in solar panel installation and offers a variety of financing options tailored for both residential and commercial clients. Their mission revolves around helping customers reduce energy costs while promoting environmental sustainability through renewable energy solutions. Empower Energy Solutions prides itself on delivering a customer-centric experience, which includes a comprehensive project workflow from consultation to installation. They utilize high-quality solar panels and provide warranties to ensure customer satisfaction. The company has garnered positive reviews from clients, indicating a strong reputation in the industry. With a workforce of around 114 employees, they maintain a significant presence in the U.S. market, while also having a small international footprint.

4. Prime Energy Solar

• Website: primeenergysolar.com
• Ownership type: Private
• Headquarters: Milford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 93%, Pakistan 7%
• Founded year: 2018
• Headcount: 11-50
• LinkedIn: prime-energy-solar

Prime Energy Solar, based in Milford, Connecticut, is a private solar energy company founded in 2018. With a team of 43 employees, they specialize in solar panel installations for both residential and commercial clients. The company aims to help customers reduce energy costs and achieve sustainability through innovative solutions. They offer a range of services, including HVAC and roofing, which enhance their solar installation offerings. Prime Energy Solar operates with a strong focus on customer satisfaction, providing no upfront cost solutions and comprehensive financial support to facilitate the transition to solar energy. Their mission is to transform homes into energy-efficient spaces, and they are committed to delivering high-quality service backed by a lifetime warranty on their installations. The company has garnered positive reviews from clients, reflecting their dedication to service and expertise in navigating local solar incentive programs. Prime Energy Solar is positioned as a proactive player in the solar market, striving for energy independence and environmental responsibility.

5. Ion Solar Pros

• Website: ionsolarpros.com
• Ownership type: Private
• Headquarters: Middlebury, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2019
• Headcount: 11-50
• LinkedIn: ion-solar-pros

Ion Solar Pros, based in Middlebury, Connecticut, is a private solar energy provider that specializes in solar energy systems, battery storage, and electric vehicle (EV) charging solutions. Founded in 2019, the company has quickly made a name for itself by catering to both homeowners and businesses looking to reduce energy costs and enhance sustainability. Ion Solar Pros prides itself on delivering expert installation and robust customer support, ensuring a smooth transition to solar energy. Their offerings include high-performance solar panels that are designed to produce more energy in various conditions, along with comprehensive energy solutions that integrate seamlessly with modern energy needs. The company has received positive reviews and maintains a strong local presence, focusing on quality and customer satisfaction in the Connecticut market.

6. Everlast Energy

• Website: everlastenergyct.com
• Ownership type: Private
• Headquarters: Manchester, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2022
• Headcount: 11-50
• LinkedIn: everlast-energy

Everlast Energy, based in Manchester, Connecticut, is a solar energy company that specializes in renewable energy solutions tailored for residential and commercial customers. Founded in 2022, the company has quickly made a name for itself by offering services such as solar panel installations and energy storage solutions. With a collective experience of over 30 years in the solar industry among its team, Everlast Energy aims to help clients reduce their energy costs while minimizing their environmental footprint. The company operates primarily in Connecticut, Massachusetts, and Rhode Island, focusing on providing a personal touch in customer interactions. They also offer a veteran's discount, reflecting their commitment to supporting those who have served in the military. Everlast Energy's approach combines education and transparency, ensuring clients are well-informed about their options and the benefits of solar energy.

7. Savkat INC

• Website: savkat.com
• Ownership type: Family Owned
• Headquarters: Bristol, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1985
• Headcount: 51-200
• LinkedIn: savkatinc

Savkat INC, founded in 1985 and based in Bristol, Connecticut, is a family-owned solar energy provider that specializes in residential solar energy systems. The company has carved out a niche in the market by managing the entire installation process in-house, which allows them to maintain high standards of quality and customer service. Savkat offers a variety of products, including premium solar panels, energy storage solutions, and electric vehicle charging systems, catering primarily to homeowners looking to reduce energy costs and enhance energy independence. Their commitment to customer satisfaction is reflected in their comprehensive 25-year warranty on installed systems. Operating across several states in New England, Savkat has established itself as a reliable option for homeowners seeking solar solutions. The company prides itself on its personalized approach, ensuring that each customer receives tailored advice and support throughout their solar journey.

8. Centurion Solar Energy, LLC

• Website: centurionsolar.com
• Ownership type: Private
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 79%, Mexico 21%
• Founded year: 2012
• Headcount: 11-50
• LinkedIn: centurion-solar-energy

Centurion Solar Energy, LLC, founded in 2012 and based in Stamford, Connecticut, specializes in solar installation and renewable energy solutions. With a workforce of 11-50 employees, the company has made a mark by installing over 10,000 solar systems primarily on the East Coast. They cater to a range of clients, including solar dealers and homeowners, facilitating a smooth transition to solar energy. Their services cover the entire process from solar system design and installation to financing and permitting assistance. Centurion Solar has garnered recognition for its quality, achieving NYSERDA Quality Platinum Status in 2024, which reflects their dedication to excellence in solar installations. The company also emphasizes strong project management, ensuring that all aspects of solar projects are handled efficiently, allowing clients to focus on their core business operations.

9. Green Earth Energy Photovoltaic

• Website: geepv.com
• Ownership type: Private
• Headquarters: East Windsor, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2007
• Headcount: 51-200
• LinkedIn: green-earth-energy-photovoltaic

Green Earth Energy Photovoltaic, established in 2007, is a solar energy provider based in East Windsor, Connecticut. The company specializes in the installation of solar panels and energy efficiency solutions tailored for both residential and commercial customers throughout New England. With a team that boasts over 140 years of combined experience in electrical engineering and construction, Green Earth Energy manages all aspects of the installation process without subcontracting, ensuring quality and consistency. They are recognized for their commitment to sustainability and cost reduction, offering flexible financing options to make solar energy more accessible. The company has received accolades such as the Pacesetter Awards in 2015 and 2017, highlighting their performance in the industry. Green Earth Energy also collaborates with local energy authorities to maximize available incentives for their clients, further enhancing their service offerings.

10. Earthlight Technologies

• Website: earthlighttech.com
• Ownership type: Family Owned
• Headquarters: Ellington, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2008
• Headcount: 51-200
• LinkedIn: earthlight-technologies

Earthlight Technologies, based in Ellington, Connecticut, is a family-owned solar energy company that has been operational since 2008. The firm specializes in providing a wide range of solar solutions tailored for both residential and commercial clients. Their services include solar panel installations, energy efficiency programs, EV charging stations, and energy storage solutions, such as Tesla Powerwalls. Earthlight Technologies is dedicated to helping customers reduce their energy costs while promoting sustainable energy practices. With a workforce of approximately 91 employees, the company operates in Connecticut, Massachusetts, and Oregon, showcasing its regional reach and commitment to the solar industry. Their focus on customer satisfaction is evident in their post-installation support and maintenance services, which aim to ensure the long-term efficiency of solar systems.

11. Lantern Energy

• Website: lanternenergy.com
• Ownership type: Private
• Headquarters: Norwich, Connecticut, United States (USA)
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: lantern-energy

Lantern Energy, founded in 2009 and based in Norwich, Connecticut, is a private energy solutions provider with a workforce of approximately 36 employees. The company specializes in energy efficiency and electrical services, offering a range of solutions that include energy assessments, solar installations, and electrical upgrades. Lantern Energy serves both residential and commercial customers in Connecticut and Massachusetts, helping them reduce energy costs and improve efficiency. Their solar offerings include ground mount installations, which cater to clients who may not have suitable rooftops for solar panels. Lantern Energy is also recognized for its commitment to energy efficiency, holding various industry certifications and affiliations that enhance its credibility in the energy sector.

12. Smart Roofs Energy

• Website: smartroofssolar.com
• Ownership type: Private
• Headquarters: Monroe, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2013
• Headcount: 11-50
• LinkedIn: smart-roofs-solar

Smart Roofs Energy, based in Monroe, Connecticut, is a renewable energy service company that specializes in commercial solar energy solutions. Since its inception in 2013, the company has focused on providing solar panel installations, energy storage systems, and electric vehicle (EV) charging stations to a variety of clients, including businesses, municipalities, and non-profits. With a team of around 21 employees, Smart Roofs Energy operates nationwide, aiming to help clients lower their utility costs while promoting sustainable energy practices. The company prides itself on its comprehensive service model, which includes everything from initial energy analysis to system design, installation, and ongoing management. Their commitment to innovation and customer satisfaction is evident in their approach, which emphasizes education and tailored solutions for each client. Smart Roofs Energy has also been recognized for its growth and impact in the industry, making it a relevant player in the solar panel installation market.

13. Louth Callan Renewables

• Website: louthcallanrenewables.com
• Ownership type: Private
• Headquarters: Suffield, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2018
• Headcount: 51-200
• LinkedIn: louth-callan-renewables

Louth Callan Renewables is a solar construction company based in Suffield, Connecticut, specializing in renewable energy projects. Founded in 2018, the company has rapidly grown to employ around 61 professionals. They focus on providing a full suite of services, including preconstruction development, engineering procurement construction (EPC), energy storage solutions, and ongoing operations and maintenance. Louth Callan Renewables has successfully installed over 180 megawatts of solar energy capacity and completed more than 81 projects, primarily serving clients in New England. Their clientele includes businesses, educational institutions, and municipal governments, reflecting their capability to handle a range of project sizes and complexities. The company prides itself on its commitment to quality, safety, and customer satisfaction, supported by a team of certified experts in the field. Their operational model emphasizes transparency and efficiency, ensuring that projects are completed on time and within budget.

14. Dyna Electric, Inc.

• Website: dynaelectric.com
• Ownership type: Private
• Headquarters: Manchester, Connecticut, United States (USA)
• Founded year: 1998
• Headcount: 11-50
• LinkedIn: dyna-electric

Dyna Electric, Inc., based in Manchester, Connecticut, is a private company founded in 1998. With a workforce of approximately 38 employees, Dyna Electric specializes in electrical contracting, construction, and solar energy solutions. The company has built a reputation for delivering reliable and efficient services, primarily serving businesses and organizations in Southern New England. Dyna Electric offers a range of services, including electrical construction, site work, and comprehensive solar installations. Their solar services encompass ground mount arrays, rooftop arrays, and carport installations, showcasing their capability to handle various project types. Dyna Electric is committed to promoting renewable energy and has positioned itself as a key player in the solar installation market, emphasizing customer satisfaction and project efficiency.

15. CTEC Solar

• Website: ctecsolar.com
• Ownership type: Private
• Headquarters: Windsor, Connecticut, United States (USA)
• Employee distribution: United States (USA) 94%, Germany 6%
• Founded year: 2010
• Headcount: 51-200
• LinkedIn: c-tec-solar-llc-

CTEC Solar, based in Windsor, Connecticut, is a private solar energy company that specializes in renewable energy solutions. Founded in 2010, the company has carved out a niche in solar project development and energy storage, catering to utilities, solar developers, and property owners. CTEC Solar offers a comprehensive suite of services, including engineering, procurement, construction, and ongoing operations and maintenance. Their team consists of industry experts who are well-versed in local policies and interconnection rules, allowing them to effectively manage projects from inception to completion. With a portfolio that includes both commercial rooftop installations and large-scale utility projects, CTEC Solar has developed over 100 MW of solar and battery storage projects across various regions in the United States. Their commitment to delivering quality and cost-effective energy solutions is evident in their approach to project management and community engagement.

16. Lodestar Energy

• Website: lodestarenergy.com
• Ownership type: Private
• Headquarters: Avon, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: lodestar-energy

Lodestar Energy, founded in 2014 and based in Avon, Connecticut, is a private solar energy developer dedicated to renewable energy solutions. The company collaborates with landowners, municipalities, and housing authorities to create solar projects that not only provide energy savings but also contribute to reducing carbon emissions. With a focus on sustainable development, Lodestar has completed a range of solar installations, including ground-mounted arrays, solar carports, and rooftop solutions. Their portfolio highlights their commitment to transforming underutilized spaces into productive solar facilities. Lodestar has developed and financed over $300 million in solar projects, with a significant pipeline of additional projects in progress. Their approach emphasizes building long-term partnerships and delivering environmentally, socially, and financially beneficial energy solutions.

17. SunEnergy1

• Website: sunenergy1.com
• Ownership type: Venture Capital
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: December 2024
• Founded year: 2009
• Headcount: 201-500
• LinkedIn: sunenergy1

SunEnergy1, founded in 2009 and based in Stamford, Connecticut, is a solar energy developer that focuses on commercial solar project development. The company offers a comprehensive suite of services, including engineering, procurement, construction, and operations for solar facilities. With a workforce of approximately 133 employees, SunEnergy1 has established itself as a significant player in the solar industry, having constructed over 1 GW of solar projects and boasting a robust pipeline of 14 GW ready for development. Their clientele primarily consists of corporate and institutional partners seeking sustainable energy solutions. SunEnergy1's vertically integrated model allows them to control all stages of solar projects, from land acquisition to operations and maintenance, ensuring flexibility and competitive pricing. Additionally, the company is committed to community engagement, having donated over $5 million to various causes, which reflects their dedication to social responsibility in conjunction with their business operations.

18. Energy Resources USA

• Website: energyresourcesusa.net
• Ownership type: Private
• Headquarters: Thomaston, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2011
• Headcount: 51-200
• LinkedIn: energy-resources-usa

Energy Resources USA, based in Thomaston, Connecticut, is a private company founded in 2011. With a workforce of around 25 employees, the firm specializes in energy efficiency and renewable energy solutions. Their service offerings include electric vehicle charging, LED lighting, and notably, solar solutions. They cater to a variety of sectors, including commercial, education, healthcare, and manufacturing, focusing on helping clients reduce energy costs and enhance operational efficiency. Energy Resources USA provides a comprehensive suite of services, from initial assessments to the installation of solar systems, ensuring that clients benefit from available utility incentives and financing options. Their commitment to sustainability and energy conservation is evident in their approach to projects, which often aim to lower the net costs for customers while promoting environmental stewardship.

19. Verogy

• Website: verogy.com
• Ownership type: Private
• Headquarters: West Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), April 2022
• Founded year: 2017
• Headcount: 11-50
• LinkedIn: verogy

Verogy is a solar energy company based in West Hartford, Connecticut, established in 2017. The firm specializes in providing comprehensive renewable energy solutions, including project development, EPC services, and solar financing. With a team that boasts over 75 years of combined experience in the solar industry, Verogy is dedicated to assisting businesses, municipalities, and organizations in their transition to solar power. Their services are designed to lower energy costs and improve environmental impact, making solar energy more accessible and manageable for their clients. Verogy has developed a solid portfolio of solar projects across various sectors, including commercial, industrial, and utility-scale installations. They also offer expertise in navigating state-specific solar incentives, enhancing the financial viability of solar projects for their clients.

20. Dyna, Inc.

• Website: dynainc.com
• Ownership type: Private
• Headquarters: Manchester, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1998
• Headcount: 11-50
• LinkedIn: dyna-electric

Dyna, Inc., based in Manchester, Connecticut, is a private contracting firm founded in 1998. With a workforce of approximately 39 employees, the company specializes in electric, construction, and solar services. Dyna has built a reputation for delivering high-quality installations and efficient project management across various sectors, including commercial, industrial, and municipal projects. Their solar division offers turn-key solutions, guiding clients from project development through to completion. Dyna's commitment to renewable energy is reflected in their extensive experience and the range of solar services they provide, which includes ground mount arrays, rooftop installations, and carport systems. The company prides itself on its ability to streamline the build process, making renewable energy more accessible to its clients. Dyna, Inc. continues to adapt and grow within the solar industry, positioning itself as a reliable partner for those seeking sustainable energy solutions.

21. Ross Solar, a ConEdison Solutions Company

• Website: rosssolar.com
• Ownership type: Private
• Headquarters: Brookfield, Connecticut, United States (USA)
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: ross-solar-group

Ross Solar, a ConEdison Solutions Company, is a renewable energy provider based in Brookfield, Connecticut. Founded in 2007, the company specializes in solar energy solutions, onshore wind, and energy storage. They serve a variety of clients, including government agencies, educational institutions, and commercial businesses, helping them achieve their energy efficiency and sustainability goals. Ross Solar is known for its innovative approach to energy management and financing options, which allows clients to implement renewable energy solutions effectively. The company has developed a reputation for delivering quality solar installations and energy efficiency programs, making it a trusted partner in the renewable energy sector.

Solar Energy Insights: Key Companies in Connecticut

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