Explore Top Tech Companies
All Filters

Remote jobs



Tech Stack



Top Hartford, CT Energy Companies (14)

Don't see your company?

Create a company profile
Other • Professional Services • Real Estate • Energy
42 Offices
11,027 Employees

GHD recognises and understands the world is constantly changing. We are committed to solving the world’s biggest challenges in the areas of water, energy and urbanisation. We are a global professional services company that leads through engineering, construction and architectural expertise. Our forward-looking, innovative approaches connect and sustain communities around the world. Delivering extraordinary social and economic outcomes, we are focused on building lasting relationships with our partners and clients. Established in 1928, we remain wholly owned by our people. We are 10,000+ diverse and skilled individuals connected by over 200 offices, across five continents – Asia, Australia, Europe, North and South America, and the Pacific region.

4 Offices
205 Employees

We are on a mission to help families take control of their energy costs and take back their financial freedom. Before we came along, solar panels were only available to the wealthy. We noticed that the people who needed to save money the most couldn’t afford them. We changed all of that by creating a brand new financial model and it worked!

West Hartford, CT
2,130 Employees

Legrand, North & Central America, one of Legrand S.A’s largest subsidiaries, is the global specialist in products and systems for electrical and digital building infrastructures. Our comprehensive offering of solutions for use in commercial, industrial, and residential markets makes us the premier choice for suppliers worldwide. A steady flow of inventive products with high added value is a prime vector for our growth. Backed by sound business and financial structures, Legrand is actively expanding its presence in fast-growing geographical zones and market segments that include lighting controls, energy savings and home automation through a sustained stream of targeted, self-financed acquisitions and other initiatives.

Stamford, CT
573 Employees

Castleton Commodities International is an independent global energy commodity merchant and infrastructure asset investor. As a trader, CCI deploys capital on a proprietary basis in the physical and financial commodity markets, providing the Company with market insights and access. As a strategic investor and developer, CCI leverages its market expertise, operations capabilities, and industry knowledge to invest in, and develop, select commodity infrastructure assets.

Orange, CT
498 Employees

About AVANGRID: AVANGRID, Inc. (NYSE:AGR) is a diversified energy and utility company with $30 billion in assets and operations in 25 states. The company operates regulated utilities, electricity generation, and natural gas storage through three primary lines of business. Iberdrola USA Networks includes eight electric and natural gas utilities serving 3.1 million customers in New York and New England. Iberdrola Renewables operates 6.3 gigawatts of electricity capacity, primarily through wind power, in states across the U.S. Iberdrola Energy Holdings operates 120 Bcf of owned or contracted natural gas storage and hub service facilities in the South and West. AVANGRID employs 7,000 people. The company was formed as a business combination between Iberdrola USA and UIL Holdings in 2015. AVANGRID remains an affiliate of the Iberdrola Group, a worldwide leader in the energy industry.

Greentech • Biotech • Consulting • Energy
East Hartford, Connecticut
3 Employees

Sustainable Innovations develops technologies based on a common electrochemical platform that promote the use of renewable resources.

Hartford, CT
6,000 Employees

Eversource is a business & residential energy provider in CT. Access information about your residential account, outages, programs, safety tips and more.

Other • Energy
6 Offices
1,001 Employees

Since 1979, Zeeco is the trusted worldwide source for the design and manufacturing of combustion and environmental solutions for the refining, petrochemical, production, power and pharmaceutical industries. Beginning as a small operation, Zeeco focused on the ideas of expertise, innovation, and reliability that today are the company’s foundation of success. ZEECO® product lines include next generation ultra-low emission burners, gas and liquid flaring systems and hazardous and non-hazardous waste incineration. Zeeco has supplied some of the world’s largest combustion systems. These include the largest enclosed ground flare, acid gas thermal oxidizer, enclosed flare and elevated flare. We also have developed the industry’s best performing ultra-low NOx burner. From refining, onshore/offshore production, power, well testing, petrochemical, gas processing and LNG industries, Zeeco has the experience and technical expertise to design the right combustion solution for your application. Our Combustion Research and Test Facility was the first in the world to become ISO 9001-2000 certified, and our staff strives to stay ahead of rapidly changing emissions requirements. With over three decades of industry experience, we have developed a worldwide reputation for excellence in engineering, reliability, and integrity.

Hartford, Connecticut
8 Employees

Enviro Power is an energy-tech company.

Agency • Greentech • Energy
Hartford, CT
6,439 Employees

Eversource Energy (NYSE:ES), a Fortune 500 and Standard & Poor’s 500 energy company based in Connecticut, Massachusetts and New Hampshire, operates New England’s largest energy delivery system. Eversource is committed to safety, reliability, environmental leadership and stewardship, and expanding energy options for its 3.7 million electric and natural gas customers. We are a company dedicated to our customers, communities and employees. We know that our success depends on the best efforts of our engaged team- diverse, talented and dedicated individuals who take pride in their work, know and exhibit the value of teamwork and collaboration, and support each other in working safely every day.

Fairfield, CT
2,300 Employees

Oil & Energy

Manchester, CT
104 Employees

IMCORP is a provider of underground power cable reliability services for medium and high-voltage (5kV to 500kV) power cable systems for both aged and new cable installations. Our asset life cycle management services (commissioning, maintenance, and retirement) enable clients to improve cable system reliability. Using IMCORP’s Factory Grade® technology, we access cable systems and identify cable systems in need of rehabilitation allowing the customer to ultimately restore the cable system to like-new status. Additionally, our offline Factory Grade® assessments can be capitalized, as part of a cable life extension program. Our technology is also a non-destructive cost-effective alternative to wholesale cable replacement. Avoiding cable system failures and high O&M costs begins with understanding how cable failures occur and having the ability to detect these defects in advance of a breakdown. In our more than 20 years in business, we have assessed over 220 million feet (67 million meters) of cable systems across 4 continents. Our professionalism and integrity have helped make us one of the fastest-growing engineering services companies in the US for 8 straight years (by Inc Magazine). Our goal is to partner with our clients to achieve the maximum reliability attainable at the lowest total cost.

Woodbridge, CT
43 Employees

UCAN is empowering the greatest athletes in the world to achieve their next personal best. Using the revolutionary energy provided by LIVSTEADY - a slow-release carbohydrate that gives you steady, long-lasting energy without sugar, UCAN provides the fuel for athletes to take their performance to the next level. Whatever your goals, be it focus, performance, or recovery you can unlock next-level performance with UCAN.

North Haven, CT
42 Employees

Precision Combustion, Inc. (PCI) is a clean energy technology company developing and manufacturing advanced catalytic devices and systems for energy sector applications. Products and technologies under development include internal combustion engine generators, compact fuel reformers, fuel processors, fuel cell systems, burners and combustors for power generation and oil & gas production applications.