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 506 start-ups with an aggregate funding of $11.7b. The average funding per company in this subset is $169.7m.
Last update to the database: Feb 18, 2025. See changelog.
Helion Energy is a fusion power company aiming to build the world's first fusion power plant.
6
Funding Rounds
$577.8m
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
$2.1b
Money raised
South Pole is a Zurich-based climate solutions company offering sustainable project development services in order to provide carbon offset credits to businesses and organizations.
1
Funding Rounds
First Light Fusion is a clean energy producer founded in 2011 by Nicholas Hawker.
7
Funding Rounds
$185.0m
Money raised
A digital fertility clinic offering semen analysis, sperm improvement, and sperm cryostorage services. Founded at Harvard in 2018, the company has raised $20M from investors like Y Combinator, Bain Capital Ventures, FirstMark Capital, and celebrities like Justin Bieber.
4
Funding Rounds
$6.5m
Money raised
Arundo provides software to enable advanced analytics in industrial companies. Arundo's customers transform their businesses through predictive analytics, deeper understanding of physical operations, and data-driven SaaS applications.
5
Funding Rounds
$73.7m
Money raised
Climeworks is a clean technology company that has developed technology for carbon dioxide (CO2) capture from ambient air. It was founded in 2009 and is located in Zurich, Switzerland.
10
Funding Rounds
$876.0m
Money raised
Tesseract is a diversified financial services and investment management innovator in digital assets, powered by world-class technology.
3
Funding Rounds
$206.0m
Money raised
EmitWise helps large businesses monitor and reduce their carbon footprints.
7
Funding Rounds
$39.7m
Money raised
LeadCold is a company developing lead-cooled small nuclear reactor technology founded in 2013 by Janne Wallenius, Jesper Ejenstam and Peter Szakalos.
2
Funding Rounds
$21.1m
Money raised
Terrestrial Energy is developing molten salt nuclear reactors.
5
Funding Rounds
$40.7m
Money raised
Aerones is a company building heavy-lift drones founded in 2015 by Janis Putrams.
3
Funding Rounds
$19.6m
Money raised
A diagnostics company developing products for diagnosis, prognosis and monitoring of patients with autoimmune rheumatic diseases
3
Funding Rounds
$37.4m
Money raised
Tokamak Energy is a fusion energy producer founded in 2009 by Alan Sykes, David Kingham and Mikhail Gryaznevich.
7
Funding Rounds
$172.1m
Money raised
Nuclear fusion start-up in Europe researching high-temperature superconductors to simplify the construction of Stellarator devices as well as other applications in medical imaging.
1
Funding Rounds
$16.0m
Money raised
Zap Energy is developing compact fusion power that doesn't require magnets or lasers.
7
Funding Rounds
$332.8m
Money raised
Puraffinity is a company using customized granular media (CGM) to remove pollutants and contaminants from water supplies.
5
Funding Rounds
$9.1m
Money raised
A company developing cryogenic cooling solutions for research, material science, quantum computing, high-performance electronics, and detector applications.
2
Funding Rounds
HelicitySpace is a fusion propulsion and power company, developing technology for spacecraft.
1
Funding Rounds
$150.0k
Money raised
A company that was developing an advanced technology mini nuclear reactor, based on intellectual property developed by scientists at Los Alamos National Laboratory. It was located in Denver, Colorado.
2
Funding Rounds
$12.9m
Money raised
Modular direct air capture system that uses buildings' ventilation to remove carbon dioxide from the air.
2
Funding Rounds
$1.8m
Money raised
A nuclear energy company making a stable salt reactor.
1
Funding Rounds
$7.5m
Money raised
A company developing its own petawatt class and high energy laser system coupled with a sophisticated target physics infrastructure exclusively dedicated to commercial "neutron-lean" fusion energy.
2
Funding Rounds
$39.0m
Money raised
Klima is a climate app that empowers everyone to take effective, immediate climate action.
6
Funding Rounds
$40.2m
Money raised
A nuclear reactor design company developing Waste-Annihilating Molten Salt Reactor. The company ceased operations in September 2018.
1
Funding Rounds
$763.0k
Money raised
Pexapark AG is a blockchain company founded in 2017 by Michael Waldner, Florian Müller and Luca Pedretti.
10
Funding Rounds
$64.5m
Money raised
Ontario’s largest clean electricity generator, Ontario Power Generation produces about half of the province’s power using a diverse portfolio of publically-owned generating assets.
1
Funding Rounds
Cognite is an industrial software company headquartered in Oslo, Norway, that creates software for oil and gas, power and utilities, renewable energy, manufacturing and other asset-heavy industries.
7
Funding Rounds
$1.1b
Money raised
Octopus Energy is a company that offers retail electricity and gas supplies, and specializes in sustainable energy.
6
Funding Rounds
$2.1b
Money raised
Company that has developed and operates the world's first continuous-operation enabled, superconducting, high-beta style fusion research device.
1
Funding Rounds
$3.1m
Money raised
FlexiDAO is a blockchain company founded by Simone Accornero in 2017.
3
Funding Rounds
$13.0m
Money raised
A technology company developing a tethered electric aircraft to produce energy from the wind.
5
Funding Rounds
$6.6m
Money raised
Sono Motors is a car company manufacturing solar electric vehicles founded in 2016 by Jona Christians, Laurin Hahn and Navina Pernsteiner.
12
Funding Rounds
$200.8m
Money raised
We make energy fair, smart and green - one flexible monthly plan with no hidden fees, digital-first and 100% renewable energy.
3
Funding Rounds
$22.9m
Money raised
Bonnet is a company developing an app that acts as one subscription for all EV charging networks.
1
Funding Rounds
$1.2m
Money raised
Enapter is a company that designs and manufactures hydrogen generators.
9
Funding Rounds
$128.3m
Money raised
Highview Power is a company that provides CRYOBattery which delivers a clean and long-duration energy storage to enable a 100% renewable energy future.
6
Funding Rounds
$465.8m
Money raised
Tado° is a Munich, Germany-based manufacturer of thermostats and mobile applications that adjust to the real-time behavior of residents in private homes and small businesses for greater energy efficiency.
3
Funding Rounds
$147.0m
Money raised
Zolar is a photovoltaic solar manufacturer founded in 2016 by Gregor Loukidis.
8
Funding Rounds
$269.8m
Money raised
ZOLA Electric designs, manufactures, installs and sells solar backed systems for homes mainly in the rural and off-grid areas in Africa.
11
Funding Rounds
$278.0m
Money raised
Perceptual Robotics is an industrial automation company based in Bristol.
5
Funding Rounds
$3.7m
Money raised
CorPower Ocean is a wave energy converter solutions provider founded in 2012 by Patrik Möller .
8
Funding Rounds
$73.3m
Money raised
A nuclear fusion research company based in Tempe, Arizona.
1
Funding Rounds
$3.0m
Money raised
Arizona Public Service is an electric utility company in Arizona founded in 1886.
1
Funding Rounds
$70.5m
Money raised
Circularise is a Netherlands-based company helping plastic manufacturers, brands, and original equipment manufacturers (OEMs) to trace raw materials from source, into parts, and ultimately to end products, using blockchain and other innovative technologies.
1
Funding Rounds
$12.8m
Money raised
TAE Technologies, Inc., formerly known as Tri Alpha Energy, is a California-based renewable energy company focused on developing commercial fusion energy.
11
Funding Rounds
$1.2b
Money raised
AI-driven solutions provider for inspection and maintenance of critical energy infrastructure
4
Funding Rounds
$119.4m
Money raised
Brill Power Limited is a company that develops intelligent battery management systems and technology to enhance the lifetime, performance and safety of lithium-ion battery packs.
2
Funding Rounds
$11.1m
Money raised
Cervest is building an AI platform to augment human decisions on Climate Security for global assets.
7
Funding Rounds
$109.4m
Money raised
CollectiveCrunch uses artificial intelligence in the forest industry that collects data for precise models.
5
Funding Rounds
$3.7m
Money raised
Mootral develops carbon reduction solutions for companies and governments. Its first solution is a natural feed supplement that significantly reduces methane emissions from ruminants.
5
Funding Rounds
$10.8m
Money raised
Kraftblock provides an eco-friendly, modular thermal energy storage system.
5
Funding Rounds
$53.5m
Money raised
Glint Solar is a solar developer software provider founded in 2020 by Harald Olderheim , Even Kvelland and John Modin.
3
Funding Rounds
$11.1m
Money raised
Orbisk delivers innovative solutions for the world food system to reduce food waste.
5
Funding Rounds
$3.0m
Money raised
Bloom Biorenewables is making biomass a true alternative to petroleum.
8
Funding Rounds
$3.4m
Money raised
Biotechnology startup creating sustainable materials using natural resources.
2
Funding Rounds
$5.7m
Money raised
Operator of fast-charging stations for EVs powered by renewable energy from the sun and wind.
8
Funding Rounds
$65.5m
Money raised
Nordex is a Hamburg-based company operating wind power farms.
1
Funding Rounds
$86.5m
Money raised
Sympower is an Amsterdam-based provider of software solutions for the energy industry to increase energy efficiency of renewable energy.
5
Funding Rounds
$27.5m
Money raised
Eliq is a Swedish tech company that specializes in the analysis and visualization of energy data.
5
Funding Rounds
$22.3m
Money raised
Platform for creating a people-centric connected world using internet of things technology.
5
Funding Rounds
$8.1m
Money raised
Platform for automatic water leak detection and remote water consumption tracking in private and public buildings.
3
Funding Rounds
$4.9m
Money raised
Hybrid solar technology generating combined heat and power.
2
Funding Rounds
$29.3m
Money raised
Chaddenwych Services Limited is a London-based software and blockchain technology company founded in 2015.
10
Funding Rounds
$7.0m
Money raised
GreenCom Networks is a Munich-based software company developing white-label solutions for the utility and energy service industry.
4
Funding Rounds
$15.0m
Money raised
Electric motion technology that powers industrial automation for a carbon-neutral future.
11
Funding Rounds
$1.3m
Money raised
Abatable is a London-based environmental technology company developing voluntary carbon offsets for companies.
2
Funding Rounds
$17.0m
Money raised
Bioo is dedicated to the generation of electricity from nature through singular technologies and patents of its own. The company's business model is based on the development of the R&D, and the design and distribution of sustainable products and proprietary technologies, including the production of electricity through photosynthesis.
1
Funding Rounds
$2.3m
Money raised
Daphne Technology is an air emissions control system founded in 2017 by Juan Mario Michan.
4
Funding Rounds
$23.5m
Money raised