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Best energy companies in Connecticut

We hand-curated a list of the best energy companies to work in Connecticut using data on salaries, company financial health, and employee diversity. You can also search for the best companies to work for in the state and cities you want.

Best companies to work for in Connecticut
  1. Zippia score 4.9

    #1 Best energy company to work for in Connecticut
    Company description:

    GE Energy Financial Services (EFS), a financial arm of General Electric , invests globally with a long-term view, backed by the best of GE's technical know-how and financial strength, across the capital spectrum in one of the worldâ€:tm:s most capital-intensive industries, energy, to help their customers and GE grow. With $22 billion in assets, GE Energy Financial Services is based in Stamford, Connecticut. Their power projects can produce 26 gigawatts, equivalent to the installed generating capacity of Thailand. They've invested in more than 30,000 miles of natural gas pipelines. And they've put millions of dollars into wind, solar, biomass, hydro, geothermal and other renewable power projects.

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  2. Zippia score 4.8

    #2 Best energy company to work for in Connecticut
    Company highlights:

    CCI identifies value and transacts on attractive opportunities across the commodities value chain, from producing, storing, distributing and trading commodities to investing in physical assets. This fully integrated platform has generated strong risk-adjusted returns for our investors since their inception.

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  3. Zippia score 4.7

    #3 Best energy company to work for in Connecticut
    Company description:

    Hubbell Incorporated is an American company that designs, manufactures and sells electrical and electronic products for non-residential and residential construction, industrial and utility applications.

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  4. Zippia score 4.7

    #4 Best energy company to work for in Connecticut
    Company highlights:

    Emcor Group, a Fortune 500 company, was established in 1994. This company is a leader in mechanical and electrical construction, industrial and energy infrastructure, and building services. They do planning, installing, operating, maintaining and protecting dynamic systems. As of 2018, they have estimated revenues of $7. 6B - $7. 7B; 170 locations and around 34,000 employees.

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  5. Zippia score 4.7

    #5 Best energy company to work for in Connecticut
    Company description:

    We are a team of dedicated professionals building a commodities group focused on sustainability and driven by authenticity and integrity in every aspect of our business.

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  7. Zippia score 4.6

    Company highlights:

    Established in 1969, FuelCell Energy today is a global leader in delivering clean, efficient and affordable fuel cell solutions configured for the supply, recovery, and storage of energy for a wide range of industries which include utility companies, municipalities, universities, government entities and a variety of industrial and commercial enterprises.

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  8. Zippia score 4.6

    Company description:

    STR Holdings provide global career experiences, competitive salaries and benefits, ongoing training and employee development as well as true recognition for your contributions. STR typically offers career paths in Research and Development for Polymer Scientists, Sales Professionals in China and Europe and creative Engineering professionals developing the next generation of process manufacturing solutions for STR's ground breaking new products.

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  9. Zippia score 4.6

    Company description:

    TOMRA creates sensor-based solutions for optimal resource productivity - helping their customers increase their financial results and reduce their environmental impact. TOMRA was founded in 1972 and started out with design, manufacturing and sale of reverse vending machines (RVMs) for automated collection of used beverage containers. TOMRA is active in more than 80 markets worldwide with total revenues of NOK ~4.75 billion in 2014. With more than 2,500 employees, TOMRA is publicly listed on the Oslo Stock Exchange. TOMRA products and services fall within two main business areas: Collection Solutions (including the business streams reverse vending and material recovery) and Sorting Solutions (including the business streams recycling, mining, food and specialty products). A spirit of entrepreneurship, a passion for innovation and a focus on finding solutions guide TOMRA to this day. From the world's first reverse vending machine in 1972, all the way to providing the most innovative sensor-based sorting solutions today, TOMRA has continuously redefined what it means to be innovative.

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  10. Zippia score 4.6

    Company description:

    Maxum Petroleum Holdings, Inc. markets and distributes refined petroleum products and provides logistics and energy management services in the United States and the Panama Canal. It provides various fuels, lubricants, and oil and gas production chemicals; and energy management services, such as remote and sensitive location delivery, on-site equipment monitoring and maintenance, fuel management programs, cost control programs, environmental services, and equipment leasing. The company also offers petroleum distribution services, including fuel and lubricant supply and delivery, asset management, used oil recycling, on-site refueling, fuel testing, and lubricant blending. Its customers include drilling, exploration and production companies; commercial and industrial; marine; government; and railroad, trucking, and automotive industries. The company was formerly known as SPI Petroleum LLC and changed its name to Maxum Petroleum Holdings, Inc. in January, 2004. The company was incorporated in 2003 and is based in Greenwich, Connecticut. As of September 4, 2012, Maxum Petroleum Holdings, Inc. operates as a subsidiary of Pilot Travel Centers LLC.

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  11. Zippia score 4.5

    Company description:

    Axeon, part of the Johnson Matthey group, is Europe's largest independent designer and manufacturer of lithium-ion battery systems. We deliver individual battery solutions for electric and hybrid vehicles, as well as high volumes of batteries for e-bikes, power tools and mobile technologies. We can also offer battery solutions for stationary energy storage applications. All these include state-of-the-art battery management systems.

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  12. Zippia score 4.4

    Company description:

    Envipco is an American manufacturer and distributor of reverse vending machines.

  13. Zippia score 4.3

    Company description:

    Yankee Energy System, Inc. is a holding company. The company, through its subsidiaries, offers distribution of natural gas. The company was founded in 1989 and is based in Berlin, Connecticut. As of March 1, 2000, Yankee Energy System, Inc. operates as a subsidiary of Eversource Energy.

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  14. Zippia score 4.2

    Company description:

    Littlejohn Partners IV LP is a fund family of Littlejohn & Co. LLC.

  15. Zippia score 4.2

    Company description:

    Find a low, fixed-rate energy plan with North American Power. Enjoy low, fixed energy rates, award winning customer service, and a personalized energy usage forecast service.

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  16. Zippia score 4.2

    Company highlights:

    Founded in 1979, Connecticut Energy Corporation, through its subsidiary, engages in the retail distribution of natural gas for commercial, residential, and industrial uses. Based in Bridgeport, Connecticut, the company has over 500 employees that provide superior service to approximately 158,000 customers.

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  17. Zippia score 4.2

    Company description:

    Star Gas Partners, L.P. operates as a home heating oil and propane distributor and services provider to residential and commercial customers in the United States. The company also sells home heating oil, gasoline, and diesel fuel to approximately 71,000 customers on a delivery only basis. In addition, it installs, maintains, and repairs heating and air conditioning equipment, as well as offers ancillary home services, including home security and plumbing. The company was founded in 1995 and is headquartered in Stamford, Connecticut.

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  18. Zippia score 4.2

    Company description:

    UTC Power was a fuel cell company based in South Windsor, Connecticut. It was part of United Technologies Corporation; it was purchased by ClearEdge Power in February 2013. The company specialized in fuel cells for buildings, buses and automobiles.

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  19. Zippia score 4.2

    Company description:

    Noble Environmental Power is a wind energy company with projects under construction in New York and Texas. It also has windparks operating in New York. Noble's strategy is to develop, construct, own and operate wind energy assets as an independent power producer.

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  20. Zippia score 4.1

    Company description:

    US Power Generating Co LLC headquartered in Stamford, Connecticut, is a power generating company.

  21. Zippia score 4.1

    Company description:

    Pw Power Systems, Inc. is primarily engaged in general automotive repair.

  22. Zippia score 4.1

    Company description:

    Iroquois Gas Transmission System owns and operates a 414-mile interstate natural gas pipeline extending from the U.S.-Canadian border at Waddington, NY, through New York State and western Connecticut to its terminus in Commack, NY, and from Huntington to the Bronx, NY.

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  23. Zippia score 4.1

    Company description:

    Maxum Enterprises LLC is primarily engaged in the wholesale distribution of crude petroleum and petroleum products, including liquefied petroleum gas, from bulk liquid storage facilities.

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  24. Zippia score 4.0

    Company description:

    Greenskies Renewable Energy is a renewables & environment company providing solar financing and project implementation services. Greenskies Renewable Energy is a commercial and industrial (C&I) solar developer in the United States and one of the nation's leading municipal solar installers. We were the Number-One ranked solar developer in the C&I niche in the U.S. PV (photovoltaic) Leaderboard, compiled by GTM Research, the solar industry's leading research firm and data tracker, at the close of the first quarter of 2016. We were also ranked as the nation's Number One C&I solar developer on Solar Power World's 2016 Top 500 Solar Contractors list. Solar Power World is the solar industry's leading business-to-business publication.

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  25. Zippia score 4.0

    Company description:

    We provide energy, sustainability and accessibility consulting as well as certification, research & development and compliance services.

  26. Zippia score 4.0

    Company description:

    Meenan Oil Co., L.P. engages in the retail and wholesale distribution of home heating oil. The company was founded in 1984 and is based in Stamford, Connecticut. Meenan Oil Co., L.P. operates as a subsidiary of Petro Holdings Inc.

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  27. Zippia score 4.0

    Company description:

    Replanter Energy, LLC is primarily engaged in the generation, transmission, and/or distribution of electric energy for sale.

  28. Zippia score 4.0

    Company description:

    Pilot Energy Services operates as a national marketer and logistics company for petroleum products in the United States. Its products and services include fuels; lubricants; ancillaries, such as filters, coolants, and additives; asset management; consulting; hauling and disposing used oil and lubricants from industrial sites, and tailored and industry-generic maintenance services; equipment loan and rental; fuel management; and risk management. The company serves agriculture, automotive, commercial and industrial, drilling and exploration, lubricant blending, marine, mining, railroad, steel, and trucking industries. Pilot Energy Services was formerly known as Maxum Petroleum, Inc. The company was founded in 2004 and is based in Greenwich, Connecticut. Pilot Energy Services operates as a subsidiary of Maxum Petroleum Holdings, Inc.

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  29. Zippia score 3.9

    Company description:

    El Paso Field Services, LP operates as a subsidiary of El Paso Transmission Company.

  30. Zippia score 3.9

    Company description:

    Proton OnSite's factory & technical support teams are available by phone & email to answer your questions and provide the highest level of customer service. Proton OnSite is the world's leading & largest manufacturer of safe, reliable & cost-effective...

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  31. Zippia score 3.9

    Company description:

    Brenntag Lubricants is a best-in-class lubricants and specialty chemical distributor offering the best brands, the best people and the best process to the industrial, CVL, and PVL markets. We bring a level of Performance Integrity that is unmatched in our industry.

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  32. Zippia score 3.9

    Company description:

    Cadenza Innovation provides patented Li-ion battery design and architecture for a license to global manufacturers. Its cell design combines the best properties from wound jelly rolls and large prismatic cells and allows for game-changing high energy density at low cost for EV, PHEV, and grid markets. The company is driven by a mission to deploy its innovation, intellectual property, field-proven operational, and mass production expertise, along with its key technology partners to build Cadenza Innovation into a global technology leader in energy density, lowest cost, and safety. Cadenza Innovation was established in 2012 and is headquartered in Wilton, Connecticut.

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  33. Zippia score 3.9

    Company description:

    Perkins Oil Co., Inc. is primarily engaged in the wholesale distribution of petroleum and petroleum products, except those with bulk liquid storage facilities. Included are packaged and bottled petroleum products distributors, truck jobbers, and others marketing petroleum and its products at wholesale, but without bulk liquid storage facilities.

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  34. Zippia score 3.9

    Company description:

    alterisinc.com is your first and best source for all of the information you're looking for. From general topics to more of what you would expect to find here, alterisinc.com has it all. We hope you find what you are searching for!

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  35. Zippia score 3.9

    Company description:

    Santa Energy provides reliable heating oil & propane delivery and service for homes and businesses in Fairfield and New Haven counties.

  36. Zippia score 3.8

    Company description:

      You First Since 1863 Alberto, Delivery Driver    

  37. Zippia score 3.7

    Company description:

    APS Technology delivers field performance and design confidence worldwide for all your oilfield and harsh environment needs. From the minds of their highly experienced engineers, technicians, toolmakers and machinists come the world's most reliable and advanced electromechanical, instrumentation and sensor designs for the oilfield and other harsh environments.

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  38. Zippia score 3.6

    Company description:

    Tradition Energy is one of the world's largest and most experienced full-service energy management consultants serving more than 1,200 commercial, industrial and governmental clients ranging from Fortune 500 global companies to medium-sized businesses ...

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  39. Zippia score 3.4

    Company description:

    Cristal and its nearly 4,000 employees on five continents are proud leaders in manufacturing titanium dioxide products. They are passionate about pursuing perfection in their work, providing for our family of employees, and creating a cleaner, brighter future with the products they make. With enhanced operating efficiencies, greater geographic diversity, and stronger research development, Cristal has earned its trust amongst its customers and partners, as well as the environment in which it operates.

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  40. Zippia score 3.4

    Company description:

    Our mission is to convert our positive energy and use our knowledge to power the lives of people, communities, and businesses. Learn more about Starion Energy!

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Best energy companies to work for headquartered in Connecticut

RankCompanyZippia score
1GE Capital4.9
2Castleton Commodities International4.8
3Hubbell4.7
4EMCOR Group4.7
5Freepoint Commodities4.7
6FuelCell Energy4.6
7STR Holdings4.6
8TOMRA4.6
9Maxum Petroleum Holdings, Inc.4.6
10Axeon Specialty Products4.5
11Envipco4.4
12Yankee Gas Services4.3
13Littlejohn Partners IV LP4.2
14North American Power4.2
15Connecticut Energy Corporation4.2
16Star Gas Partners, L.p.4.2
17UTC Power4.2
18Noble Environmental Power4.2
19Us Power Generating Company4.1
20Pw Power Systems, Inc.4.1
21Iroquois Gas4.1
22Maxum Enterprises, LLC4.1
23Greenskies4.0
24Steven Winter Associates4.0
25Meenan Oil Co LP4.0
26RePlanter Energy4.0
27Pilot Energy Services4.0
28El Paso Field Services LP3.9
29Proton OnSite3.9
30GH Berlin Windward3.9
31Cadenza Innovation3.9
32Perkins Oil Co., Inc.3.9
33Alteris Renewables3.9
34Santa Energy3.9
35Gault Energy3.8
36APS Technology3.7
37Tradition Energy3.6
38CRISTAL3.4
39Starion Energy3.4

Energy companies by city in Connecticut