This article showcases our top picks for the best Connecticut based Energy companies. These startups and companies are taking a variety of approaches to innovating the Energy industry, but are all exceptional companies well worth a follow.
We tried to pick companies across the size spectrum from cutting edge startups to established brands.
We selected these startups and companies for exceptional performance in one of these categories:
- Innovation
- Innovative ideas
- Innovative route to market
- Innovative product
- Growth
- Exceptional growth
- Exceptional growth strategy
- Management
- Societal impact
Top Connecticut Energy Startups
Data sourced from Crunchbase and SemRush.
VoltXon Inc.
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VoltXon Inc is a medical device company that develops new technology of battery-free pacemakers to reduce cost, pain and risk.
Precision Combustion
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Precision Combustion is a clean energy technology company for developing and manufacturing catalytic reactors & systems.
Keter Environmental Services, Inc.
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Keter Environmental Services is an environmental services company providing solid waste management and recycling enhancement services.
SKYRE
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Skyre converts hydrogen and carbon dioxide into economic opportunities.
Industrial Airflow Dynamics Inc
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IAFD is a specialty company that provides services to the power industry catering to fabric expansion joints surrounding HRSG.
Noble Environmental Power
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Noble Environmental Power is a leading renewable energy company.
R&D Dynamics
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R&D Dynamics Corporation is a center for research and the design, development and production of energy efficient, oil-free turbomachinery.
Petroleum Heat & Power
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Americas 1 local home heating oil and total home comfort services provider.
Greenskies Renewable Energy LLC
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Greenskies Renewable Energy is a renewables & environment company providing solar financing and project implementation services.
Environmental Energy Services
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Environmental Energy Services is a clean energy company utilizing innovative chemistry and engineering.
Iroquois Gas Transmission System
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Iroquois Gas Transmission System is an oil & energy company that operates the natural gas pipeline.
Artis Energy
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Artis Energy Intelligence delivers real-time visibility and insights that save energy, identify operational improvements.
Tradition Energy
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Tradition Energy is an oil & energy company offering energy consulting services.
Utiliz
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Utiliz saves you money on your utility bills. We manage your supplier against the market ensuring you are always on a great low cost plan
Star Gas Partners L.P.
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Star Gas Partners is a full-service energy provider specializing in the sale of diesel fuel.
Thermaxx Jackets
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Thermaxx Jackets was founded over 25 years ago with a single purpose: to save energy .
Gemma Power Systems
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Gemma Power Systemsis an Engineering, Procurement and Construction company providing solutions for power and renewable energy industry.
TechniArt Inc.
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TechniArt Inc. is focused on developing and marketing products which involve alternative sources of energy.
Blue Thunder Technologies
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Distributor of Cleanroom Supplies
Midsun Group
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Midsun is engaged in providing animal outage protection and high voltage insulator cleaning services.
Preferred Utilities Manufacturing Corporation
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Preferred Utilities Manufacturing Corporation is an engineering company specializing in nuclear outage support and nuclear power facilities.
Oak Investment Partners III
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Oak Investment Partners is a multi-stage venture capital firm its focus is on high growth opportunities in Clean Energy.
USi
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USi provides engineering services and advanced technology products for the electric power industry.
Steven Winter Associates
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Steven Winter Associates is a renewables & environment company offering energy, sustainability, research, and accessibility services.
Automated Building Systems
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Automated Building Systems provides lighting control, reporting, energy, auditing, grant writing, monitoring & system integration services.
FuelCell Energy
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FuelCell Energy, Inc. (NASDAQ: FCEL) is an integrated fuel cell company that designs, manufactures, installs, services and operates
Budderfly
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Budderfly is an energy management company with devices that measure and report on all elements of energy use.
Triax Technologies
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Triax Technologies delivers a connected IoT worksite platform designed for construction, energy and heavy industrial environments.
Altus Power America
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Altus Power America Management is a leader in private investment in clean energy projects and renewable energy certificates
Diamond S Shipping
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Diamond S Shipping is an energy shipping company that owns and operates crude and product tankers.
Cadenza Innovation
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Cadenza Innovation provides patented Li-ion battery design and architecture for a license to global manufacturers.
P2 Science
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P2 Science develops a bio-refining process for the conversion of biomass such as vegetable oils into high-value specialty chemicals.
Oxford Performance Materials
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OPM is a commercial company delivering fully functional end-use products to the biomedical, aerospace, and industrial markets.
Proton Energy Systems
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Proton Energy Systems is a company that provides hydrogen, nitrogen, and zero air generators to labs, and energy production companies.
Counterpointe Sustainable Real Estate
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CSRE is leading the way in financing energy efficiency, renewables seismic strengthening, storm protection for commercial real estate.
Winters Bros. Waste Systems
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Winters Bros Waste Systems facilitates collection of waste, recycle and transfer stations in Florida, Vermont, Long Island and Connecticut.
Millbrae Energy
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Millbrae Energy is a developer and producer of oil and gas reserves.
Source Renewables
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Source Renewables is a clean energy development company that develops community solar and storage projects.
H2Sonics
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H2Sonics manufactures a system of reactors to produce hydrogen and aluminum oxide.
Connecticut Green Bank
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Connecticut Green Bank is accelerating the growth of green energy for home and building owners across Connecticut.
Upcycle Technologies
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Upcycle Technologies is a developer of an energy conservation technology used to convert carbon-based waste materials into energy.
Ameri Energy Group
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Ameri Energy Group is a US based firm engaged in energy-saving products. The company is seeking to raise funding to set up the company.
Eversource Energy
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Eversource transmits and delivers electricity and natural gas for more than 3.6 million electric and natural gas customers.
Crius Energy
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Crius Energy is an independent energy retailers in the United States, providing electricity, natural gas and solar products.
Starwood Energy Group Global
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Starwood Energy Group is a private investment firm based in Greenwich, CT that specializes in energy infrastructure investments.
Tauriga Sciences
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Tauriga Sciences, Inc. is a diversified company focused on the Triple Bottom Line.
New Haven Community Solar
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Clean Cheap Power for Low-Income Housing
APS Technology
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APS Technology is an oil & energy company that provides vibration management products.
POWWR
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POWWR is The leader in energy managed software solutions and consulting services.
ClearStak
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ClearStak mission is to invent and manufacture technologies that improve efficiency and reduce visible emissions.
GTherm
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GTherm, Inc. (“GTherm”) is dedicated to the development of environmentally-sound innovations for use in the energy and other markets.
Pratt & Whitney Power Systems
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PW Power Systems, Inc. (PWPS), formerly Pratt & Whitney® Power Systems and now a subsidiary of Mitsubishi Heavy Industries, Ltd.
Spot On Networks
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Spot On Networks offers tech platforms that provide wireless broadband internet access to residential users in multifamily dwelling units.
Kinsley Power Systems
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Kinsley Power Systems is an oil & energy company specializing in energy solutions.
Bolt Technology Corp
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Bolt Technology Corp is supplier of marine seismic energy sources and replacement parts for offshore energy exploration.
ATR Energy
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ATR Energy is a high-tech exploration and production company that offers oil drilling services.
Alteris Renewables
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Alteris Renewables is the largest design-build renewable energy company in the Northeast, with more than 25 megawatts installed for over
Norwich Public Utilities
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Norwich Public Utilities is a municipal utility company providing electricity, natural gas, water, and wastewater services.
Starion Energy
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Starion Energy is an oil & energy company providing electricity and natural gas supply solutions.
Palm Energy Systems
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Palm Energy Systems is a Innovative Networked Solar Farms where we Live, Work and Play
North American Power and Gas
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North American Power and Gas is a supplier of natural gas and electricity.
Independent Energy LLC
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Develop and commercialize a zero emission, centrifugal force generator to power 100% off-grid buildings and electric vehicles.
Earthlight Technologies
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Earthlight is a renewables & environment firm that specializes in solar energy solutions for homes, businesses, and commercial buildings.
Poseidon Water
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Poseidon Water is a company that assists other organizations to produce clean water for areas lacking a safe supply.
Destwin Energy Systems
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Destwin Energy Systems deals with cloud-based SaaS solutions, risk management, fuel dealer & energy wholesaler solution for the fuel sector.
Transformative Wave
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Transformative Wave develops catalyst control technologies, eIQ platform to monitor energy consumption & HAVC assets performance solutions.
Inertech
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Our solutions are engineered to increase reliability and lower the total cost of ownership and energy footprint of IT infrastructure.
SunEast Development
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SunEast is a privately held clean energy development and management services company.
Gault
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Gault provides fairfield county homeowners bioheat heating oil, propane, generators, HVAC services.
Celtic Energy
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Celtic Energy is an energy consulting firm that specializes in energy project management and oversight.
Connecticut Natural Gas Corp
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Connecticut Natural Gas Corp is a utilities company providing natural gas equipment and services.
EnSight+
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EnSight+ provides facilities management, utilities, construction, oil & gas, and home services.
Blue Delta Energy
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Blue Delta offers sustainability, renewable and clean energy solutions for various sectors.
Ashe Morris
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Ashe Morris is developing a new technology that controls the temperature by changing the effective heat transfer area itself.
Canusa Hershman Recycling
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Canusa Hershman offers a wide array of services designed to help maximize the profitability and effectiveness of the recycling efforts.
Eastern Gen
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Eastern Gen is a portfolio company that sells capacity, energy & ancillary services in the merchant markets and generates assets accounts.
Sun-Wind Solutions, LLC
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Solar Panel Installer, Commercial Solar, Residential Solar, Solar Installation Company
Innovation Fuels
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Innovation Fuels is a biodiesel company developing and operating state-of-the-art biodiesel processing plants in the US.
Lantern Energy
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Lantern Energy provides energy solutions to residential and commercial customers.
Home Power Systems
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Home Power Systems provides complete local sales, installation, repairs, warranty services, and internet sales.
InstaSolar Energy LLC
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Expanding the Horizons of Solar Energy
Swaave Holdings
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Swaave Holdings specializes in technology, energy, agriculture and real estate with strategic investments and financial services.
US Power Generating Company
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US Power Generating Company is an oil & energy company that generates and sells energy.
Grove Strategic Ventures
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GSV, Inc. is an oil and gas exploration company.
Taylor Energy
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Taylor Energy is an oil and propane supplier company.
MSL Group
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MSL Group handles roof-mounted and ground-mounted solar projects.
Dr. Energy Saver
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Dr. Energy Saver provides comprehensive home energy audits and a broad range of energy saving services
Six One Commodities
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Six One Commodities is a global energy trading merchant with offices in Stamford, CT, Houston, TX, Berlin and Singapore.
Jager LLC Propane & Natural Gas Services
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Buy your wood pellet gas appliances, propane tanks, and more from us-we install and service what we sell.
IHS Herold
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IHS Herold is an oil & energy company offering research and development services.
RPM Sustainable Technologies
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Chemical process development company
Greenwich Energy Solutions
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Greenwich Energy Solutions is one of the premier providers of independent energy solutions.
Power Play Solar, LLC
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PowerPlay Solar is a solar financial development company that gets projects over the goal line.
CT Energy Ratings
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CT Energy Ratings offers its customers with tools to discover, compare, and order residential and commercial electricity services.
Krishnan & Associates
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Krishnan & Associates provides marketing, market analytics, recruitment, mergers & acquisitions services to the power and energy industry.