These US-based energy technology companies range from large groups to younger firms, focusing on electrifying and decarbonizing the planet. They specialize in diverse areas such as renewable energy generation, energy storage, and modernizing the power grid. Key players include GE Vernova, which focuses on sustainable energy, and Baker Hughes, providing innovative energy solutions. First Solar specializes in thin-film photovoltaic technology, while Ormat Technologies is a geothermal energy leader.
A notable pattern among these companies is the concentration of headquarters in Texas, particularly Houston, with companies like Baker Hughes and Solaris Energy Infrastructure. California also features prominently with firms like SB Energy and Peak Energy. The companies cover a broad spectrum of energy solutions, from traditional oil and gas efficiency improvements by Solaris Energy Infrastructure to advanced fusion energy development by Commonwealth Fusion Systems and SHINE Technologies, and grid modernization efforts by Base Power Company.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
GE Vernovalinktr.ee
A purpose-built company focused on electrifying the planet and decarbonizing it through a diverse portfolio of energy businesses, ensuring reliable and sustainable energy |
70,646 | |||
| 2 |
Baker Hughesbakerhughes.com
Energy technology company providing innovative solutions globally, focusing on safety, efficiency, and sustainability in the energy and industrial sectors |
67,440 | |||
| 3 |
First Solarfirstsolar.com
Leading American company specializing in advanced thin film photovoltaic technology, manufacturing high-performance solar modules for reliable power generation. |
6,686 | |||
| 4 |
Ormat Technologies, Inc.ormat.com
A leading geothermal company focusing on renewable energy solutions, energy storage, and recovered energy generation with a global presence |
1,337 | |||
| 5 |
Commonwealth Fusion Systemscfs.energy
A company specializing in commercial fusion energy, developing compact power plants using HTS magnet technology to combat climate change |
1,089 | |||
| 6 |
Eos Energy Enterprises, Inc.eose.com
This company specializes in designing and manufacturing safe, scalable, and sustainable energy storage solutions to accelerate the shift to clean energy |
469 | |||
| 7 |
Solaris Energy Infrastructuresolaris-energy.com
Innovative oil and gas industry leader improving wellsite performance with cutting-edge technologies, automated control systems, and customer-focused support |
434 | |||
| 8 |
Base Power Companybasepowercompany.com
Modernizing the aging power grid with a nationwide network of distributed batteries to strengthen infrastructure and reduce energy costs. |
393 | |||
| 9 |
SB Energysbenergy.com
SB Energy is a leading Climate Infrastructure and Technology Platform developing, owning, and operating renewable energy projects at scale |
342 | |||
| 10 |
SHINE Technologiesshinefusion.com
The company accelerates the development of fusion energy technology to address current challenges in various industries such as medicine and energy |
342 | |||
| 11 | 229 | ||||
| 12 |
Renew Homerenewhome.com
The company partners across the energy industry to help customers save energy and money at home, revolutionizing the way we power the world |
203 | |||
| 13 |
Cleantech Industry Resources (CIR)cleantechindustryresources.com
A company providing renewable energy project development and construction services with full transparency, efficiency, and 24-hour support for projects of any size |
202 | |||
| 14 |
Giga Energygigaenergy.com
International energy infrastructure company based in Houston & Shanghai, manufacturing electrical equipment, data centers, and power generation assets, with operations in North and South America |
177 | |||
| 15 |
Peak Energypeakenergy.com
An American venture specializing in low-cost, giga-scale storage for clean, affordable, and reliable energy, with expertise in sodium-ion battery technology |
173 | |||
| 16 |
Energy CXenergycx.com
Innovative energy procurement company focused on maximizing savings, transparency, and sustainability for businesses through technology and industry expertise Join now! |
161 | |||
| 17 |
Rondo Energyrondo.com
Providing zero-carbon industrial heat solutions using a heat battery that powers processes with renewable electricity, reducing costs and emissions. |
159 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 18 |
Zap Energyzapenergy.com
Innovative company developing a low-cost, small fusion reactor as an alternative path to viable fusion energy, without relying on magnets |
147 | |||
| 19 |
Leapleap.energy
A platform that integrates distributed energy resources with energy markets to access grid services revenue streams and create virtual power plants |
112 | |||
| 20 |
WellStatwellstat.io
Advanced data analytics and IoT integration for energy management, air quality improvement, and sustainable building performance optimization in built environments. |
76 | |||
| 21 |
David Energydavidenergy.com
technology-driven electricity company integrating smart devices to optimize renewable energy use, reduce costs, and improve power reliability for homes and businesses |
57 | |||
| 22 |
ISAisaindustries.com
A collective of entrepreneurs and engineers developing sustainable and affordable energy solutions to empower users towards energy independence |
35 | |||
| 23 |
SISU Energy and Environmentalsisu-ee.com
A solutions-driven partner specializing in emissions reduction, retrofit optimization, field service, waste heat recovery, renewables, and distributed energy for sustainable projects |
35 | |||
| 24 |
Verneverne-power.com
A cleantech startup accelerating the shift to zero-emission heavy transportation through innovative high-density hydrogen technology for trucks and heavy vehicles Visit website for career opportunities |
25 | |||
| 25 |
CAMX Powercamxpower.com
Cutting-edge energy storage technology development company providing breakthrough battery innovations through deep expertise in lithium-ion systems and state-of-the-art facilities |
22 | |||
| 26 |
Energy Companyenergycompany.com
A company specializing in renewable energy solutions such as solar panels, batteries, and electric vehicle charging stations |
19 | |||
| 27 |
Vindum Engineering Inc.vindum.com
Specializing in high-pressure pumps, valves, and laboratory equipment since 1987 Known for innovative designs, durability, and global customer satisfaction |
10 | |||
| 28 |
Capacitech Energycapacitechenergy.com
Capacitech innovates energy storage by integrating it into power cords, helping customers enhance batteries and renewables while reducing costs |
6 | |||
| 29 |
Thermal Energy HQin.powerpanel.com
Innovative solar technology solutions provider offering hybrid solar-thermal technology, rapid deployment systems, and sustainable energy solutions for various industries and applications |
6 | |||
| 30 |
oilfield.ai庐maillance.com
Global industrial AI SaaS company supporting oil & gas upstream digital transformation Provides tools combining physics and AI/ML for cost reduction and emissions |
5 | |||
| 31 |
Shomax Energyshomax.ca
A global leader in renewable and clean energy initiatives, focusing on quality development and operational excellence to deliver exceptional returns to investors |
5 | |||
| 32 |
Xeco Energyxecoenergy.com
Engineering and consulting firm offering energy management solutions for commercial and industrial clients globally, focusing on improving efficiencies and reducing costs |
4 | |||
| 33 |
Servant Energy Business Solutions (SEBS)servantenergy.com
This company provides permanent and temporary power solutions, energy efficiency consultation, LED lighting, bill audits, waste/recycling consultation, EV charging stations, and solar power solutions |
3 | |||
| 34 |
Energy Driven Technologies, LLC (Editekk)editekk.com
The company develops custom surfaces and coatings using nanotechnology to enhance material performance, focusing on advanced materials for healthcare and energy devices |
3 | |||
| 35 |
FinSat Inc.finsat.space
FinSat Inc integrates GIS and fintech to empower real estate industry professionals with tools and insights for informed decision-making and optimized investments |
1 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 15, 2026.
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