The wind energy sector in Connecticut is rapidly advancing, with an increasing number of companies making a significant contribution. These corporations primarily focus on the production, distribution, and maintenance of wind energy systems. Many are actively engaged in the development of cleaner, more efficient, and sustainable energy sources. Key players such as AVANGRID, Inc., BNE Energy, and Evergreen Energy are leading in innovative technologies and forging ahead to create a more sustainable future. The industry shows a promising future as renewable energy is increasingly adopted, transforming the way we power our homes, businesses, and community infrastructure.


Top 24 wind energy companies in Connecticut

1. AVANGRID, Inc. (formerly UIL Holdings Corporation)

  • Website: avangrid.com
  • Headquarters: Orange, Connecticut, United States
  • Founded: 1852
  • Headcount: 5001-10000
  • LinkedIn

Avangrid is a leading clean energy company that generates and delivers energy from sustainable, renewable sources. They actively work to protect and enhance the natural environment.


2. BNE Energy

  • Website: bneenergy.com
  • Headquarters: Colebrook, Connecticut, United States
  • Founded: 2006
  • Headcount: 11-50

BNE Energy is a renewable energy company that develops, constructs, and operates clean, green, renewable wind generation facilities. They aim to become a leading supplier of wind energy that adds a significant amount of renewable, sustainable energy to our electric supply while protecting our environment and improving the community.


3. Evergreen Energy

Evergreen Energy was founded by Rich & Sharon Vocke in March 2006. Both had been interested in solar power since the last energy crisis in the 1970's. In 2005 they installed a 6 kilowatt solar photovoltaic array on their home in Southington, Connecticut. They were so pleased with the result, they were inspired to help other homeowners and businesses install renewable energy systems and Evergreen Energy was born. Shortly thereafter, they installed a geothermal heating and cooling system in their home and decided to expand the business to offer multiple renewable technologies. Wind energy was a natural addition to the menu where there's an appropriate wind resource. Their goal is to meet the specific needs of each of their clients by providing various renewable energy options.


4. Solomon Energy

Solomon Energy is an energy advisory firm that assists clients in implementing solar, wind, energy storage and supply projects to meet their sustainability goals and lower costs.


5. Gemma Power Systems, LLC

  • Website: gemmapower.com
  • Headquarters: Glastonbury, Connecticut, United States
  • Founded: 1997
  • Headcount: 51-200
  • LinkedIn

Gemma Power Systems is a company that specializes in engineering and construction for utility-scale power generation projects. They offer innovative solutions and the latest technology in combined cycle, simple cycle, and renewable/environmental power plants. With a focus on quality and safety, Gemma Power Systems delivers efficient and reliable energy solutions for their customers.


6. Starwood Energy Group

Starwood Energy Group is an investment company focused on the energy sector. They offer funding and support to energy projects, primarily in the renewable and natural gas markets. With a team of experienced professionals, they provide expertise in project development, financing, and asset management.


7. Sandbrook Capital

  • Website: sandbrook.com
  • Headquarters: Stamford, Connecticut, United States
  • Founded: 2021
  • Headcount: 11-50
  • LinkedIn

Sandbrook is a private investment firm focused on combining financial returns with real climate impact. They invest in companies that are essential for transforming the world's energy infrastructure.


8. Berkshire-litchfield Environmental Council INC

BERKSHIRE-LITCHFIELD ENVIRONMENTAL COUNCIL INC is an environmental services company based out of PO BOX 668, CANAAN, Connecticut, United States.


9. The People's Action

  • Website: pacecleanenergy.org
  • Headquarters: West Simsbury, Connecticut, United States
  • Headcount: 1-10

PACE is a public health and environmental all-volunteer organization formed in 1973 by a group of concerned Connecticut citizens to: promote the development of alternative sources of energy, especially passive solar, solar hot water, and photovoltaic energy encourage the efficient use of energy develop a spirit of conservation among Connecticut residents challenge Connecticut's commitment to nuclear power and nuclear weapons PACE is the largest all volunteer organization in the state that is working on these issues and is a non-profit 501(c)3 organization. ""The minimum morality of man is to leave the genepool of humanity intact.""


10. CC Hinckley

  • Website: cchinckley.com
  • Headquarters: Essex, Connecticut, United States
  • Headcount: 1-10

#WindPower, #SolarPower, #AlternativeEnergy, #Clean Tech, #Financial Advisory, #ChuckHinckley


11. CThru Metals

CThru Metals offers expanded metal foil solutions for a variety of industries including aircraft lightning strike protection, battery electrode materials, EMI shielding, and fuel cells.


12. Hannon Armstrong Sustainable Real Estate

  • Website: hasre.com
  • Headquarters: Greenwich, Connecticut, United States
  • Founded: 2018
  • Headcount: 11-50
  • LinkedIn

Hannon Armstrong Sustainable Real Estate is the single source financier for the commercial property assessed clean energy (C-PACE) market. We have unparalleled expertise, resources and financial strength to help property owners go green


13. AltEnergy, LLC

AltEnergy LLC is an entrepreneurial investor in alternative energy projects.


14. Evolutionary Home Energy Solutions

Evolutionary Home Energy is a provider of energy-efficient home improvement solutions and technologies, including solar energy systems and efficient home insulation.


15. US Power Generating Company

  • Website: uspowergen.com
  • Headquarters: Stamford, Connecticut, United States
  • Founded: 2005
  • Headcount: 51-200
  • LinkedIn

US Power Generation LLC is a power generation company offering energy solutions to its customers.


16. Mallon Chevrolet, INC

  • Website: donmallon.com
  • Headquarters: Norwich, Connecticut, United States
  • Founded: 1978
  • Headcount: 11-50
  • LinkedIn

Donmallon.com is a company focused on the development and production of wind turbines and vacuum pumps. With 20 years of experience in the industry, the company specializes in replacing imported products with domestically produced ones.


17. Discount Power

Discount Power is an electricity and natural gas provider that offers renewable energy options and competitive pricing to customers in seven states.


18. Geo SubSea LLC

Geo SubSea Consulting LLC is a company that provides survey support, data processing, interpretation, technical document preparation, product development, client representation and consulting services in the offshore wind energy industry. The company is also engaged in educational and environmental outreach programs in the local community.


19. Hart Consults, LLC

Hart Consults, LLC is a Women Business Enterprise (WBE) company located in Connecticut. Owner, Carina Hart is a Civil & Environmental Engineer who began her career after graduating from WPI. With over 17 years of experience in New England and New York municipal drinking water and wastewater industry working as a design engineer before branching out as a sub-consultant. Ms. Hart’s diverse experience allows her to accommodate your project needs to provide added value along with WBE certification.


20. Solar Industry Magazine

  • Website: solarindustrymag.com
  • Headquarters: Southbury, Connecticut, United States
  • Founded: 2008
  • Headcount: 51-200

Solar Industry is a magazine that provides news and insights on the solar power industry. The publication covers the latest developments in technology, policy, and finance related to solar energy.


21. Powervine Energy

We are an independent supplier of electricity and natural gas for homeowners and small business owners looking for consistent price, value, and environmentally friendly energy supply. Three highly experienced executives with decades of combined experience in the energy industry founded Powervine Energy with a vision of providing exceptional value and service for homes and small businesses, while creating a challenging, exciting, and enjoyable place to work. Powervine Energy’s fixed price energy plans allow customers to secure a smart price for energy supply while utilities still deliver the energy as they always have. Utility energy prices vary. However, Powervine Energy provides customers who choose us as their energy supplier with peace of mind about their energy price and access to other valuable benefits not available with regulated utilities, such as our unique Powervine Energy Rewards Program. Protecting the environment is also part of Powervine Energy’s philosophy. 25% or more of Powervine Energy’s electricity supply is backed by solar, wind, and hydro generation, and carbon offsets counteract 25% of the greenhouse gas emissions of our natural gas supply. We also provide products that will raise that 25% up to 100%. To learn more about us, visit powervineenergy.com.


22. Savkat INC

  • Website: savkat.com
  • Headquarters: Bristol, Connecticut, United States
  • Founded: 1985
  • Headcount: 11-50
  • LinkedIn

SAVKAT is a solar energy provider that offers top quality products and services. They specialize in home solar systems and provide a comprehensive warranty that covers the entire system. SAVKAT is committed to customer satisfaction and offers financing options for convenience.


23. Murphy International Development LLC

Murphy International Development is a global energy project development, management and financing company offering renewable and conventional power solutions including wind, solar, hydrogen, geothermal, and biomass.


24. Solidification Products International, Inc

Solidification Products International Inc. provides patented oil containment products, such as Petro-Barriers(tm), Pump-Thru Barriers(tm) and StormWater Petro-Barriers(tm). They also offer other oil containment solutions for utilities and transformers including Petro-Pipe(r), Petro-Plugs and transformer drop-in liners, as well as solar and wind products.


Want to find more wind energy companies?


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...and a lot more!