We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.
There are 50 start-ups with an aggregate funding of $11.5b. The average funding per company in this subset is $229.8m.
Last update to the database: Jun 10, 2025. See changelog.
5
Funding Rounds
$2.1b
Money raised
Commonwealth Fusion Systems is a Cambridge, Massachusetts-based research and development company developing fusion power systems based on ARC tokamak reactors.
5
Funding Rounds
$18.4m
Money raised
WiBotic is a technology company specializing in wireless charging and power optimization solutions.
8
Funding Rounds
$28.3m
Money raised
Verdigris is a California-based company developing smart grid and energy management technology aided by artificial intelligence. It was founded by Mark Chung, Thomas Chung, and Jonathan Chu.
5
Funding Rounds
$2.7b
Money raised
Nikola Motor Company is a Phoenix, Arizona-based automotive company founded in 2014 by Trevor Milton.
7
Funding Rounds
$695.0m
Money raised
Aurora Solar is a San Francisco-based developer of solar design, proposal, and sales software.
11
Funding Rounds
$528.2m
Money raised
Stem is a Millbrae, California-based developer of solutions for energy consumption through a combination of data, predictive analytics, and energy storage to reduce energy costs.
6
Funding Rounds
$225.0m
Money raised
FreeWire Technologies is a San Leandro, California-based provider of battery systems for electric vehicle charging and mobile distributed power.
4
Funding Rounds
$875.0m
Money raised
Sila Nanotechnologies is an Alameda, California-based company engineered materials company focused on improving energy storage.
5
Funding Rounds
$162.0m
Money raised
Sense is a Cambridge, Massachusetts-based developer and distributor of energy tracking and automation solutions. Sense specializes in tracking devices and home automation solutions for its customers.
6
Funding Rounds
$72.0m
Money raised
OhmConnect is a company founded in 2013 by Curtis Tongue, Matt Duesterberg and Cadir Lee.
1
Funding Rounds
$2.6m
Money raised
R&D lab focused on energy, manufacturing, & innovation.
5
Funding Rounds
$23.8m
Money raised
A company developing technology to increase the energy density of lithium-ion batteries
3
Funding Rounds
$85.0m
Money raised
GHGSat is a Montreal-based company developing sensors to monitor industrial emissions.
4
Funding Rounds
$537.4m
Money raised
Developer of software-defined high power microwave (HPM) technology designed to counter unmanned aircraft systems (UAS). The company's technology addresses threats such as drones and other asymmetric technologies, enabling defense organizations to stun drones with a hard reset or knock swarms out of the sky.
10
Funding Rounds
$21.3m
Money raised
Prieto Battery, Inc. is a company that focuses on commercializing patented Lithium-ion battery technology.
8
Funding Rounds
$181.0m
Money raised
Fulcrum Bioenergy is a Pleasanton, California-based biofuel and clean technology company.
4
Funding Rounds
$512.5m
Money raised
Crusoe Energy Systems is a company founded in 2018 by Chase Lochmiller.
3
Funding Rounds
$1.2m
Money raised
Dreamweaver International is a company that produces lithium-ion battery separators, founded by Brian Morin.
2
Funding Rounds
$35.0m
Money raised
Palmetto is a company founded in 2008.
1
Funding Rounds
$30.0m
Money raised
SunShare is a company founded in 2011.
3
Funding Rounds
$104.8m
Money raised
EcoFlow is a mobile power company that is reinventing the way the world accesses energy.
1
Funding Rounds
$8.0k
Money raised
Volt Markets is a blockchain company founded in 2016 by Rob Hitchens, Dan Nossa and James Duchenne.
14
Funding Rounds
$82.5m
Money raised
ViZn Energy Systems is a company founded in 2009 by Craig Wilkins.
5
Funding Rounds
$261.9m
Money raised
6K is a North Andover, Massachusetts and New Cumberland, West Virginia-based custom fabrication and additive manufacturing company.
11
Funding Rounds
$82.6m
Money raised
Nanoramic Laboratories is a materials solutions innovator and energy storage technology company.
8
Funding Rounds
$14.1m
Money raised
Graphenix Development Inc. is a developers of energy density electrodes founded in 2010 by Robert Anstey.
5
Funding Rounds
$792.0m
Money raised
Redwood Materials is a battery recycling company founded in 2017.
1
Funding Rounds
Fenix International is a company founded in 2009 by Mike Lin.
1
Funding Rounds
$3.0m
Money raised
Cybersaint provides cybersecurity management solutions for organizations, automating compliance and risk assessments.
1
Funding Rounds
$14.0m
Money raised
KeraCel develops multi-material 3D additive manufacturing methods for application in active electro-mechanical devices.
3
Funding Rounds
$360.0k
Money raised
TEQ Charging increases affordability and accessibility of electric vehicle charging.
4
Funding Rounds
$550.0k
Money raised
Its mission is to offer the Solar Site Design information technology platform to solar professionals worldwide.
2
Funding Rounds
$7.0m
Money raised
Greenlots is a company founded in 2017 by Ron Mahabir.
2
Funding Rounds
$548.0m
Money raised
Onsite power generation for the zero carbon future
1
Funding Rounds
$500.0k
Money raised
American Aerospace Technologies, Inc. is a company founded in 2002 by David Yoel.
1
Funding Rounds
$65.0m
Money raised
Ionic Materials is a battery manufacturing company.
1
Funding Rounds
$50.0k
Money raised
SYNCFAB is a company founded in 2013 by Andy Tong.
3
Funding Rounds
$4.0m
Money raised
Natrion is a company founded in 2018 by Thomas Rouffiac.
2
Funding Rounds
$418.0m
Money raised
Group14 Technologies is a Woodinville, Washington-based battery manufacturing company.
1
Funding Rounds
$10.0m
Money raised
Ocean Renewable Power Company is a company founded in 2004.
1
Funding Rounds
$1.5m
Money raised
Lucid Energy is based in Portland, Oregon in the United States. They specialize in harvesting power from moving water in industrial, agricultural, and municipal settings. The key to the technology is that it generates electricity from sources that would otherwise be lost. In other words, it is an energy recycling system. The net result is installations reduce overall energy requirements.
6
Funding Rounds
$112.7m
Money raised
Vionx Energy is a company founded by Gary Colello.
1
Funding Rounds
SOLARCYCLE is a technology-driven platform designed to maximize solar sustainability by offering solar asset owners a process for recycling retiring solar panels and technologies and repurposing them for new uses.
3
Funding Rounds
$29.0m
Money raised
Firefly Energy is a company founded in 2003.
2
Funding Rounds
$36.0m
Money raised
Ioxus is a company founded in 2007.
1
Funding Rounds
$100.0k
Money raised
Dynamhex is a personalized, localized, and standardized climate action platform.
1
Funding Rounds
$150.0k
Money raised
Nanogrid is a company founded in 2017 by Patrick Sheehan.
1
Funding Rounds
$2.5m
Money raised
AI-powered all-in-one platform for rooftop solar installers.
1
Funding Rounds
$4.1m
Money raised
Momentum Solar is a company founded in 2009.
1
Funding Rounds
$2.6m
Money raised
Groom Energy Solutions is a United States-based company in the energy industry.
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