Massachusetts has emerged as a key player in the renewable energy sector, emphasizing sustainable practices and innovative technology. The state boasts companies focusing on various energy solutions, primarily solar and wind, alongside other technologies like energy storage. With growing awareness of climate change, the demand for clean energy is rising, driving investments in renewable sources. Notably, Massachusetts aims to significantly increase its renewable energy generation, aligning with both state and national climate goals. This vibrant industry not only supports environmental initiatives but also stimulates job creation and economic growth, highlighting its importance in the future of energy production.

The Massachusetts renewable energy field features a range of companies varying in size from small startups to larger firms. Headquartered primarily in urban centers like Boston and Lowell, these entities span from recently established businesses to those founded several decades ago. Specializing in solar, wind, and energy storage, they offer solutions that help consumers reduce energy costs and environmental impact. Companies like Nexamp and Vineyard Wind exemplify innovation and collaboration within the industry, demonstrating the state's pivotal role in advancing clean energy technology.

Continue reading to discover top renewable energy companies in Massachusetts.

Top 23 Renewable Energy Companies in Massachusetts

1. Nexamp

• Website: nexamp.com
• Ownership type: Venture Capital
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Latest funding: Other (Debt), $340.0M, April 2025
• Founded year: 2007
• Headcount: 201-500
• LinkedIn: nexamp

Nexamp, headquartered in Boston, Massachusetts, is a clean energy provider that specializes in solar energy and energy storage solutions. Founded in 2007 by two U.S. Army veterans, the company has been dedicated to making clean energy accessible and affordable. Nexamp offers a range of services, including community solar programs, energy storage solutions, and power purchase agreements, catering to residential consumers, businesses, and municipalities. Their community solar initiatives allow customers to benefit from solar energy without the need for rooftop panels, making it easier for individuals and organizations to participate in renewable energy. The company has also made significant strides in energy storage, enhancing grid reliability and providing backup power solutions. With a recent funding round of $340 million, Nexamp is well-positioned to expand its operations and continue its mission of democratizing clean energy across the United States.

2. EnergySage

• Website: energysage.com
• Ownership type: Corporate
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 88%, Serbia 12%
• Latest funding: February 2022
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: energysage

EnergySage, founded in 2009 and based in Boston, Massachusetts, is a clean energy solutions provider that specializes in solar energy, backup power, heating and cooling systems, and electric vehicle charging. The company serves as a marketplace where homeowners and businesses can compare quotes from vetted local installers, helping them make informed decisions about electrifying their homes and reducing energy costs. EnergySage has assisted over 50,000 homeowners in transitioning to clean energy, producing significant environmental benefits, such as offsetting millions of tons of CO2 emissions. Their platform is designed to simplify the process of adopting renewable energy technologies, making it easier for users to access financing options and incentives. The company has also partnered with various organizations, including utilities and trade groups, to expand the reach of clean energy solutions.

3. New Leaf Energy, Inc.

• Website: newleafenergy.com
• Ownership type: Private Equity
• Headquarters: Lowell, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: July 2022
• Founded year: 2022
• Headcount: 51-200
• LinkedIn: new-leaf-energy-inc

New Leaf Energy, Inc., based in Lowell, Massachusetts, is a renewable energy developer that specializes in solar development, energy storage, and wind generation. Founded in 2022, the company emerged from the development arm of Borrego Solar, bringing over 20 years of experience in solar project development. New Leaf Energy has a strong track record, having developed more than 1 GW of clean energy projects across various states, including California, New York, and Illinois. The company prioritizes the transition to clean energy by identifying and developing projects that contribute to a decarbonized electricity system. They work closely with landowners and stakeholders to create sustainable energy solutions, ensuring that projects are not only viable but also beneficial to the communities they serve. New Leaf Energy's commitment to renewable energy is evident in their operational strategies and project management, which aim to deliver reliable and efficient energy solutions.

4. Vineyard Wind

• Website: vineyardwind.com
• Ownership type: Corporate
• Headquarters: New Bedford, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 98%, Other 2%
• Latest funding: May 2017
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: vineyard-wind

Vineyard Wind, founded in 2009 and based in New Bedford, Massachusetts, is a corporate entity dedicated to the development of offshore wind energy. The company is currently focused on the Vineyard Wind 1 project, which is poised to be the first commercial-scale offshore wind energy project in the United States. This ambitious initiative aims to generate 800 megawatts of electricity, enough to power over 400,000 homes and businesses while reducing carbon emissions by more than 1.6 million tons annually. Vineyard Wind is committed to engaging with local communities and stakeholders to ensure that the project not only protects the environment but also delivers economic benefits. The company has established partnerships with Copenhagen Infrastructure Partners and Avangrid Renewables, which bolster its operational capabilities and investment potential. Vineyard Wind's proactive approach to environmental stewardship includes agreements to protect marine habitats and endangered species, demonstrating its commitment to sustainable development in the renewable energy sector.

5. Mayflower Wind

• Website: mayflowerwind.com
• Ownership type: Private
• Headquarters: Boston, Massachusetts, United States (USA)
• Founded year: 2019
• Headcount: 11-50
• LinkedIn: mayflower-wind

Mayflower Wind, based in Boston, Massachusetts, is an energy company dedicated to the development of offshore wind energy projects in New England. Founded in 2019, the company aims to generate over 2,400 megawatts of clean energy, enough to power more than one million homes. Their flagship project, SouthCoast Wind, is positioned over 30 miles south of Martha’s Vineyard and 20 miles south of Nantucket. Mayflower Wind is committed to addressing local energy demands while contributing to climate goals. The company emphasizes community engagement, environmental stewardship, and workforce development, aiming to create approximately 15,000 direct jobs through its initiatives. Backed by OW Ocean Winds, a global player in offshore wind development, Mayflower Wind is poised to play a significant role in the renewable energy sector in the coming years.

6. Vineyard Offshore

• Website: vineyardoffshore.com
• Ownership type: Private
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2021
• Headcount: 51-200
• LinkedIn: vineyard-offshore

Vineyard Offshore is a private clean energy company based in Boston, Massachusetts, specializing in the development of offshore wind energy projects. Established in 2021, the company has quickly positioned itself as a key player in the U.S. offshore wind sector. Its flagship project, Vineyard Wind 1, is notable for being the first commercial-scale offshore wind farm in the United States, located over 15 miles off the coast of Massachusetts. This project is expected to provide renewable energy to more than 400,000 homes and businesses while significantly reducing carbon emissions. In addition to Vineyard Wind 1, Vineyard Offshore is developing other projects, including the Excelsior Wind project in New York and a floating wind project off the coast of California. The company is committed to fostering local economic growth and job creation, actively engaging with communities, and ensuring environmental stewardship throughout its operations. Vineyard Offshore operates with a workforce of approximately 83 employees and has established partnerships with local businesses and stakeholders to maximize the benefits of its projects.

7. Longroad Energy

• Website: longroadenergy.com
• Ownership type: Private
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), $600.0M, November 2023
• Founded year: 2016
• Headcount: 51-200
• LinkedIn: longroad-energy-partners

Longroad Energy, based in Boston, Massachusetts, is a private renewable energy company founded in 2016. The firm specializes in the development, ownership, and management of wind, solar, and energy storage projects throughout North America. With a dedicated team that brings over two decades of experience in the renewable energy sector, Longroad Energy has successfully developed and acquired nearly 75 utility-scale projects. The company serves a variety of clients, including utilities, municipalities, and corporations, providing tailored sustainable energy solutions that align with their environmental goals. Longroad Energy emphasizes asset management and operational excellence, ensuring that their projects deliver reliable and cost-effective renewable energy. Recently, the company secured $600 million in debt financing to support the expansion of its renewable energy portfolio, highlighting its strong financial position and commitment to growth in the industry.

8. Ogin, Inc.

• Website: oginenergy.com
• Ownership type: Corporate
• Headquarters: Waltham, Massachusetts, United States (USA)
• Employee distribution: China 50%, United States (USA) 50%
• Latest funding: December 2017
• Founded year: 2007
• Headcount: 51-200
• LinkedIn: flodesign-wind-turbine

Ogin, Inc., based in Waltham, Massachusetts, is an energy technology company that specializes in renewable wind energy solutions. Founded in 2007, Ogin has developed the Ogin Turbine, a compact and efficient wind turbine designed to provide clean energy in a variety of locations. The turbine's innovative design incorporates aerospace technology, resulting in a significant increase in energy output compared to traditional turbines. Ogin's target customers include energy developers and local communities seeking sustainable energy options. The company aims to reduce the barriers to wind energy deployment by addressing common concerns such as visual impact and siting challenges. With a workforce split between the United States and China, Ogin is positioned to influence the global wind energy market.

9. Swift Current Energy

• Website: swiftcurrentenergy.com
• Ownership type: Private
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), October 2024
• Founded year: 2016
• Headcount: 51-200
• LinkedIn: swiftcurrentenergy

Swift Current Energy, based in Boston, Massachusetts, is a private renewable energy company founded in 2016. The firm specializes in the development, ownership, and operation of utility-scale wind, solar, and energy storage projects throughout North America. With a dedicated team of industry veterans, Swift Current Energy aims to deliver low-cost, clean energy solutions that assist municipalities and corporations in achieving their sustainability objectives. The company has successfully commercialized over 2 GW of clean energy projects and has a robust pipeline of more than 10 GW of projects under development. Notable projects include the Double Black Diamond Solar Project, which is set to be the largest solar project east of the Mississippi River. Swift Current Energy is also actively involved in securing financing for its projects, recently announcing a $300 million facility to support its renewable energy portfolio buildout. Their approach emphasizes responsible development and long-term partnerships with landowners and communities, reflecting a commitment to sustainable energy practices.

10. Palmer Capital Corporation

• Website: palmcap.com
• Ownership type: Private
• Headquarters: Cohasset, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1974
• Headcount: 1-10
• LinkedIn: palmer-capital-corporation

Palmer Capital Corporation, based in Cohasset, Massachusetts, is a private renewable energy developer established in 1974. The company specializes in financing, constructing, and managing clean energy projects, primarily focusing on wind and solar energy. Over the decades, Palmer has developed a robust portfolio, financing over $2.65 billion in renewable energy projects and successfully bringing 66 projects online across 19 states. Their operations include a variety of technologies such as battery storage, landfill gas to electricity, and biomass. Palmer works closely with landowners, developers, and energy buyers, providing tailored solutions for renewable energy development and project management. The firm is committed to reducing carbon emissions and enhancing community engagement through its projects, making it a notable entity in the renewable energy sector.

11. Glenvale

• Website: glenvale.solar
• Ownership type: Private
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2019
• Headcount: 1-10
• LinkedIn: glenvale

Glenvale Solar, based in Boston, Massachusetts, is a private solar energy developer that specializes in renewable energy projects throughout New England. Founded in 2019, the company has focused on solar energy generation and storage, providing clean energy solutions tailored to local communities and businesses. Glenvale collaborates with landowners, investors, and public officials to enhance environmental stewardship and support local economies through sustainable energy initiatives. Their portfolio includes several solar stations, such as the West Baldwin Solar Station and the Knox Solar Energy Center, which are designed to generate affordable clean energy while minimizing environmental impact. Glenvale's projects not only contribute to the fight against climate change but also provide significant economic benefits to the communities they serve, including job creation and property tax contributions.

12. SouthCoast Wind

• Website: southcoastwind.com
• Ownership type: Private
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2019
• Headcount: 51-200
• LinkedIn: mayflower-wind

SouthCoast Wind is an energy company based in Boston, Massachusetts, focused on the development of offshore wind energy projects in New England. Founded in 2019, the company is working on a project that has the potential to generate over 2,400 megawatts of clean energy, enough to power more than one million homes and businesses. SouthCoast Wind is committed to fostering community engagement and workforce development, ensuring that local communities benefit from the transition to renewable energy. The company emphasizes environmental justice, aiming to create economic opportunities for underserved communities. Their flagship project, SouthCoast Wind 1, is expected to deliver significant energy contributions by the late 2020s, with a strong focus on collaboration with local stakeholders. Backed by OW Ocean Winds, SouthCoast Wind is positioned to play a pivotal role in the offshore wind industry, contributing to the region's climate goals and economic development.

13. Form Energy

• Website: formenergy.com
• Ownership type: Private Equity
• Headquarters: Somerville, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), $50.0M, December 2024
• Founded year: 2017
• Headcount: 501-1000
• LinkedIn: form-energy

Form Energy, founded in 2017 and based in Somerville, Massachusetts, is an energy storage technology company focused on transforming the electric grid. The company is developing and commercializing a new class of iron-air batteries capable of storing electricity for up to 100 hours. This innovative technology is designed to provide cost-effective, multi-day energy storage solutions that can help utilities manage the variability of renewable energy sources. Form Energy collaborates with various utilities across the United States to implement its storage solutions, thereby contributing to a more reliable and clean electric grid. The company has received significant funding, including a recent $405 million investment, which underscores its potential for growth and impact in the renewable energy sector.

14. Agilitas Energy

• Website: agilitasenergy.com
• Ownership type: Private
• Headquarters: Wakefield, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), $100.0M, April 2024
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: agilitas-energy-inc

Agilitas Energy, based in Wakefield, Massachusetts, is an energy solutions provider that specializes in renewable energy and energy storage systems. Since its inception in 2014, the company has focused on developing, building, owning, and operating solar photovoltaic (PV) and hydropower projects. Agilitas serves utilities and municipalities, aiming to enhance grid reliability and facilitate the transition to clean energy through innovative energy storage solutions. The company has a strong presence in the Northeast, where it has become a prominent developer of energy storage systems. Agilitas has successfully constructed various projects, including the largest non-wires solution energy storage system in Con Edison’s service area. Recently, they secured $100 million in funding to accelerate their growth in the renewable energy sector, further solidifying their position in the market.

15. Vikram Solar US Inc.

• Website: vikramsolar.us
• Ownership type: Private
• Headquarters: Westborough, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 73%, India 27%
• Founded year: 2006
• Headcount: 1001-5000
• LinkedIn: vikram-solar-us

Vikram Solar US Inc., based in Westborough, Massachusetts, is a private solar panel manufacturer founded in 2006. The company specializes in high-efficiency solar modules and provides solutions tailored for residential, commercial, and utility-scale applications. With a strong emphasis on innovation, Vikram Solar has developed a range of products that include monocrystalline, bifacial, and glass-glass solar panels. Their commitment to quality is reflected in their recognition as a Tier 1 manufacturer by BloombergNEF and their status as a top performer in PVEL testing. The company operates with a production capacity of 3.5 GW, enabling them to meet the growing demand for solar energy solutions. Vikram Solar serves a wide customer base, including homeowners and businesses, aiming to reduce reliance on traditional energy sources and promote sustainable energy practices.

16. Rexel Energy Solutions USA

• Website: rexelenergy.com
• Ownership type: Family Owned
• Headquarters: Taunton, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 97%, Indonesia 3%
• Founded year: 1942
• Headcount: 51-200
• LinkedIn: rexel-energy-solutions-usa

Rexel Energy Solutions USA, based in Taunton, Massachusetts, is a family-owned energy solutions provider founded in 1942. The company focuses on energy optimization and electrification, offering a range of products and services designed to enhance energy efficiency for businesses, particularly in the energy sector. Their portfolio includes advanced lighting systems, electric vehicle (EV) charging stations, solar photovoltaic (PV) installations, battery storage solutions, and HVAC systems. Rexel Energy Solutions aims to support clients in achieving their sustainability objectives through customized solutions and expert guidance. With a workforce of approximately 72 employees, the company operates primarily in the United States, with a small presence in Indonesia. Their extensive experience in energy efficiency programs and rebate analysis further solidifies their role in the renewable energy industry.

17. Commonwealth Fusion Systems

• Website: cfs.energy
• Ownership type: Private Equity
• Headquarters: Devens, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $15.0M, June 2024
• Founded year: 2018
• Headcount: 501-1000
• LinkedIn: commonwealth-fusion-systems

Commonwealth Fusion Systems (CFS) is an energy technology company based in Devens, Massachusetts, founded in 2018. The company is dedicated to developing fusion energy solutions, collaborating closely with the Massachusetts Institute of Technology (MIT) to create advanced fusion power plants and high-temperature superconducting magnets. CFS aims to provide clean, sustainable energy to address climate change, targeting energy providers and governments as its primary customers. The company has raised over $2 billion in capital, more than any other fusion energy company, and is actively working on its flagship projects, SPARC and ARC, which are designed to demonstrate and commercialize fusion energy. CFS's innovative approach and commitment to building a fusion energy industry underscore its role in the renewable energy sector.

18. Cotuit Solar LLC

• Website: cotuitsolar.com
• Ownership type: Private
• Headquarters: Barnstable, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1988
• Headcount: 11-50
• LinkedIn: cotuit-solar-llc

Cotuit Solar LLC, based in Barnstable, Massachusetts, is a private solar installation company that specializes in renewable energy solutions tailored for residential and commercial customers. Founded in 1988, the company has accumulated over 30 years of experience in the solar industry. Cotuit Solar offers a full suite of services, including system design, installation, and energy analyses, aimed at facilitating the transition to solar energy for its clients. With a focus on reducing energy costs and environmental impact, the company has successfully installed more than 950 solar systems across Cape Cod, Martha’s Vineyard, and Nantucket. Their team is composed of certified professionals, including NABCEP-certified installers, ensuring high-quality service and compliance with local regulations. Cotuit Solar is also known for its community engagement, having participated in various sustainability projects and initiatives that promote renewable energy awareness and adoption.

19. Sunwealth

• Website: sunwealth.com
• Ownership type: Venture Capital
• Headquarters: Cambridge, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Debt), $289.7M, November 2024
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: sunwealth

Sunwealth is a clean energy investment firm based in Cambridge, Massachusetts, founded in 2014. The company specializes in financing solar projects, providing affordable clean energy solutions to businesses and community organizations. With a team of 44 employees, Sunwealth has successfully financed over 600 solar projects, totaling more than 52.3 MW of installed capacity. Their innovative investment strategies include the Solar Impact Fund and Solar Justice Fund, which focus on community-based solar initiatives, particularly those led by women and BIPOC individuals. Sunwealth has also secured significant funding, with a recent debt financing round amounting to approximately $289.7 million in November 2024. This funding supports their mission to democratize solar investment and create impactful projects that generate job opportunities and energy savings for communities. Sunwealth's commitment to social and environmental impact, alongside financial returns, positions it as a notable player in the renewable energy sector.

20. Great River Hydro, LLC

• Website: greatriverhydro.com
• Ownership type: Corporate
• Headquarters: Westborough, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: $2.0B, October 2022
• Founded year: 2017
• Headcount: 51-200
• LinkedIn: great-river-hydro-llc

Great River Hydro, LLC, founded in 2017 and based in Westborough, Massachusetts, is a prominent hydropower generator in New England. The company operates 13 hydroelectric generating stations along the Connecticut and Deerfield Rivers, with a total capacity of 589 megawatts. This capacity is sufficient to power over 213,000 homes annually, significantly contributing to the region's electricity supply. Great River Hydro is dedicated to providing reliable, carbon-free energy while actively engaging in community support and environmental conservation. The company has a strong focus on sustainability, displacing approximately 680,000 tons of carbon dioxide emissions each year. Their facilities are certified by the Low Impact Hydropower Institute, reflecting their commitment to environmentally responsible energy production. In 2022, Great River Hydro secured substantial funding, indicating confidence in their operations and future growth. The company also prioritizes community involvement, supporting local initiatives and recreational opportunities on the nearly 30,000 acres of land they manage.

21. Lightstar Renewables, LLC

• Website: lightstar.com
• Ownership type: Corporate
• Headquarters: Boston, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: March 2024
• Founded year: 2019
• Headcount: 11-50
• LinkedIn: lightstar-renewables-llc

Lightstar Renewables, LLC, based in Boston, Massachusetts, is a solar energy developer that specializes in community solar projects. Founded in 2019, the company aims to create sustainable energy solutions that benefit local communities and landowners. By developing and operating solar energy systems, Lightstar provides clean energy while ensuring environmental stewardship and financial stability for landowners. Their business model emphasizes collaboration with municipalities and community members, fostering a cleaner energy future. With over 1 gigawatt of projects completed or in development, Lightstar is actively contributing to the clean energy transition. They focus on integrating ecological and agricultural needs into their projects, which includes initiatives like agrivoltaics. This approach not only enhances energy production but also improves soil health and supports local biodiversity. Lightstar's commitment to leaving the land better than they found it reflects their dedication to sustainable practices and community engagement.

22. Solect Energy

• Website: solect.com
• Ownership type: Venture Capital
• Headquarters: Hopkinton, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Seed, $1.0M, December 2017
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: solect-energy

Solect Energy, founded in 2009 and based in Hopkinton, Massachusetts, is a solar energy provider that focuses on delivering renewable energy solutions tailored to the needs of commercial, public, and nonprofit sectors. The company offers a range of services, including solar installations, energy storage systems, and ongoing maintenance, aimed at helping organizations reduce energy costs and transition to sustainable energy sources. Solect has developed a strong customer base that includes schools, municipalities, and various businesses, all seeking to optimize their energy usage. With a commitment to community involvement, Solect has also donated solar energy systems to organizations in need, further solidifying its role in promoting renewable energy. The company is a subsidiary of Pattern Energy, which allows it to leverage additional resources and expertise in the energy sector. Solect has received funding, with its last reported amount being $1 million in December 2017, indicating ongoing investor interest in its operations and growth potential.

23. Sunbug Solar

• Website: sunbugsolar.com
• Ownership type: Corporate
• Headquarters: Woburn, Massachusetts, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: December 2023
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: sunbug-solar

Sunbug Solar, based in Woburn, Massachusetts, is a renewable energy company that specializes in solar energy systems tailored for residential, commercial, and non-profit clients. Since its inception in 2009, Sunbug has focused on providing high-quality solar solutions, including installation, maintenance, and financing options. The company has successfully served over 2,800 customers, showcasing its experience and commitment to customer satisfaction. As a certified B-Corp since 2018, Sunbug Solar emphasizes its mission to promote sustainable energy practices and reduce environmental impact. In 2023, Sunbug was acquired by ReVision Energy, which has allowed them to expand their offerings to include additional clean energy products, such as heat pumps. Their approach combines technical expertise with a customer-first philosophy, ensuring that clients are well-informed and supported throughout their solar journey.

Renewable Energy Insights: Key Companies in Massachusetts

Company	Headquarter	Size	Founded	Ownership
Nexamp	Boston, Massachusetts, United States (USA)	201-500	2007	Venture Capital
EnergySage	Boston, Massachusetts, United States (USA)	51-200	2009	Corporate
New Leaf Energy, Inc.	Lowell, Massachusetts, United States (USA)	51-200	2022	Private Equity
Vineyard Wind	New Bedford, Massachusetts, United States (USA)	51-200	2009	Corporate
Mayflower Wind	Boston, Massachusetts, United States (USA)	11-50	2019	Private
Vineyard Offshore	Boston, Massachusetts, United States (USA)	51-200	2021	Private
Longroad Energy	Boston, Massachusetts, United States (USA)	51-200	2016	Private
Ogin, Inc.	Waltham, Massachusetts, United States (USA)	51-200	2007	Corporate
Swift Current Energy	Boston, Massachusetts, United States (USA)	51-200	2016	Private
Palmer Capital Corporation	Cohasset, Massachusetts, United States (USA)	1-10	1974	Private
Glenvale	Boston, Massachusetts, United States (USA)	1-10	2019	Private
SouthCoast Wind	Boston, Massachusetts, United States (USA)	51-200	2019	Private
Form Energy	Somerville, Massachusetts, United States (USA)	501-1000	2017	Private Equity
Agilitas Energy	Wakefield, Massachusetts, United States (USA)	11-50	2014	Private
Vikram Solar US Inc.	Westborough, Massachusetts, United States (USA)	1001-5000	2006	Private
Rexel Energy Solutions USA	Taunton, Massachusetts, United States (USA)	51-200	1942	Family Owned
Commonwealth Fusion Systems	Devens, Massachusetts, United States (USA)	501-1000	2018	Private Equity
Cotuit Solar LLC	Barnstable, Massachusetts, United States (USA)	11-50	1988	Private
Sunwealth	Cambridge, Massachusetts, United States (USA)	11-50	2014	Venture Capital
Great River Hydro, LLC	Westborough, Massachusetts, United States (USA)	51-200	2017	Corporate
Lightstar Renewables, LLC	Boston, Massachusetts, United States (USA)	11-50	2019	Corporate
Solect Energy	Hopkinton, Massachusetts, United States (USA)	51-200	2009	Venture Capital
Sunbug Solar	Woburn, Massachusetts, United States (USA)	51-200	2009	Corporate

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