| # | Company | Location | Employees | Total Funding | Last Round | Last Funded |
|---|---|---|---|---|---|---|
| 1 |
Tether
Tether builds AI that turns millions of parked EVs into the world’s largest batt…
|
Stockholm | — | $1.5M | Pre Seed | 2025-06-19 |
| 2 |
SB Energy
SB Energy is a digital infrastructure and energy platform that develops, constru…
|
Redwood City | — | $4.0B | Corporate Round | 2026-01-09 |
| 3 |
LanzaTech
LanzaTech is a carbon recycling company that converts waste carbon into sustaina…
|
Skokie | 251 - 500 | $1.3B | Post Ipo Equity | 2026-01-22 |
| 4 |
X-energy
X-energy is a nuclear energy company that develops small modular nuclear reactor…
|
Rockville | 501 - 1K | $1.7B | Series D | 2025-11-24 |
| 5 |
ZeroAvia
ZeroAvia develops hydrogen-electric powertrains for zero-emission aviation solut…
|
Hollister | 251 - 500 | $306.0M | Series Unknown | 2025-12-22 |
| 6 |
Phoenix Tailings
Phoenix Tailings is a rare earth metals production company that transforms minin…
|
Woburn | 101 - 250 | $144.4M | Series B | 2026-02-19 |
| 7 |
TerraPower
TerraPower is a nuclear energy technology firm that focuses on developing a sust…
|
Bellevue | 501 - 1K | $1.5B | Secondary Market | 2026-01-20 |
| 8 |
AirJoule Technologies
AirJoule Technologies develops a climate-solution technology that harvests the u…
|
Montana Mines | 11 - 50 | $47.0M | Post Ipo Equity | 2026-01-14 |
| 9 |
Mill
Mill offers a kitchen bin that dries, shrinks, and de-stinks leftover food, elim…
|
San Bruno | 101 - 250 | $70.4M | Series Unknown | 2025-12-16 |
| 10 |
Ammobia
Ammobia is a chemical manufacturing company that specializes in the clean produc…
|
San Francisco | 1 - 10 | $11.7M | Seed | 2026-01-13 |
| 11 |
SuperCircle
SuperCircle develops a tech platform and reverse logistics system that powers ci…
|
New York | 1 - 10 | $31.0M | Series A | 2025-12-10 |
| 12 |
Natural Fiber Welding
Natural Fiber Welding develops a circularity platform producing sustainable mate…
|
Peoria | 101 - 250 | $224.0M | Private Equity | 2026-01-14 |
| 13 |
Symbrosia
Symbrosia is a cleantech startup reducing livestock methane with the mightiest s…
|
Kailua Kona | 11 - 50 | $14.4M | Series A | 2025-12-15 |
| 14 |
TAE Technologies
TAE Technologies is leveraging proprietary science and engineering to tackle the…
|
Foothill Ranch | 251 - 500 | $1.5B | Series Unknown | 2025-06-02 |
| 15 |
Rad Power Bikes
North America's largest electric bike company. We are making transportation ener…
|
Seattle | 101 - 250 | $329.3M | Series D | 2021-10-28 |
| 16 |
Sublime Systems
Sublime Systems develops technology to decarbonize cement-making.
|
Somerville | 51 - 100 | $202.0M | Series Unknown | 2025-05-20 |
| 17 |
EVE
EVE simplifies electrification for transport and logistics fleets.
|
Dublin | 1 - 10 | $100K | Seed | 2025-11-04 |
| 18 |
NoTraffic
The World's Leading Mobility Platform
|
Palo Alto | 101 - 250 | $165.7M | Series C | 2026-03-24 |
| 19 |
Eavor
Eavor is a geothermal energy solution provider that develops a closed-loop syste…
|
Calgary | 51 - 100 | $569.2M | Series Unknown | 2025-06-03 |
| 20 |
Pivot Bio
Pivot Bio is an agricultural tech company improving the microbiome by taking nit…
|
Berkeley | 251 - 500 | $616.9M | Series D | 2021-07-19 |
| 21 |
Terrestrial Energy
Terrestrial Energy is a developer of a reactor power plant technology to provide…
|
Oakville | 51 - 100 | $156.6M | Post Ipo Equity | 2025-10-28 |
| 22 |
Solstice
Solstice provides turnkey customer solutions for shared solar.
|
Cambridge | 11 - 50 | $4.8M | Grant | 2024-07-23 |
| 23 |
Amogy
Amogy offers carbon-free energy solutions using ammonia cracking technology.
|
Brooklyn | 101 - 250 | $313.3M | Series Unknown | 2025-11-17 |
| 24 |
Atlas Renewable Energy
Atlas Renewable Energy is a renewable energy company that develops, builds, and …
|
Miami | 101 - 250 | $5.0B | Debt Financing | 2026-04-10 |
| 25 |
Descycle
Descycle is a startup that recycles e-waste and recovers metals.
|
London | 11 - 50 | $27.8M | Grant | 2026-02-17 |
| 26 |
Climeworks
Climeworks provides carbon removal solutions using direct air capture (DAC) tech…
|
Z├╝rich | 251 - 500 | $946.1M | Private Equity | 2025-07-02 |
| 27 |
GoParity
Personal finance and investment app that connects people and companies with orga…
|
Lisbon | 11 - 50 | $8.6M | Series Unknown | 2025-05-02 |
| 28 |
Blykalla
small modular reactors, clean energy, deep tech
|
Stockholm | 11 - 50 | $57.3M | Series Unknown | 2025-12-18 |
| 29 |
Arcadia
Arcadia is a climate software and data company that specializes in decarbonizing…
|
Greenwood Village | 501 - 1K | $575.5M | Series E | 2024-04-11 |
| 30 |
Pachama
Pachama harnesses AI and satellite data to empower companies to confidently inve…
|
San Francisco | 51 - 100 | $88.2M | Series B | 2023-12-05 |
| 31 |
Cylib
Cylib specializes in holistic battery recycling, transforming end-of-life batter…
|
Aachen | 101 - 250 | $177.2M | Grant | 2025-12-22 |
| 32 |
Clarity AI
Clarity AI is a sustainability technology platform that uses machine learning to…
|
New York | 251 - 500 | $80.0M | Series Unknown | 2021-12-02 |
| 33 |
Princeton NuEnergy
Princeton NuEnergy is a clean-tech startup focused on direct recycling technolog…
|
Bordentown | 11 - 50 | $82.1M | Grant | 2025-08-04 |
| 34 |
Cyclic Materials
Cyclic Materials recycles rare earth elements from magnet-containing products fo…
|
Kingston | 11 - 50 | $161.2M | Series C | 2026-01-23 |
| 35 |
Turntide Technologies
Turntide Technologies develops an electric motor system designed to drive down e…
|
Sunnyvale | 501 - 1K | $491.5M | Series Unknown | 2022-06-15 |
| 36 |
Northstar Clean Technologies
Northstar Clean Technologies focuses on the recovery and reprocessing of single-…
|
Delta | 11 - 50 | $112.1M | Post Ipo Debt | 2026-03-31 |
| 37 |
Metalchemy
The world’s most innovative technology company, bringing the revolutionary benef…
|
London | 1 - 10 | $2.0M | Equity Crowdfunding | 2023-12-04 |
| 38 |
AeroFarms
AeroFarms, B Corp leader in Indoor Vertical Farming, growing produce using up to…
|
Newark | 101 - 250 | $313.7M | Series Unknown | 2025-08-05 |
| 39 |
OnPath Energy
OnPath Energy is a developer of active onshore wind farms that provides green en…
|
Houghton Le Spring | 51 - 100 | $157.6M | Debt Financing | 2025-08-21 |
| 40 |
Spark Cleantech
Spark Cleantech develops and deploys a patented decarbonization technology for h…
|
Gif-sur-yvette | 11 - 50 | $39.1M | Series A | 2025-12-04 |
| 41 |
Bloom Energy
Bloom Energy offers on-site power generation systems that can use a wide variety…
|
Sunnyvale | 1K - 5K | $5.4B | Post Ipo Debt | 2025-12-19 |
| 42 |
Third Sphere
Early-stage fund focused on rapid, scalable climate action and targeting outsize…
|
New York | 11 - 50 | — | Undisclosed | 2020-04-02 |
| 43 |
Dandelion Energy
Dandelion Energy is a home geothermal company that offers geothermal heating and…
|
Mount Kisco | 101 - 250 | $174.5M | Series C | 2024-09-24 |
| 44 |
Xampla
Xampla develops natural, biodegradable materials as sustainable alternatives to …
|
Cambridge | 11 - 50 | $39.4M | Series A | 2025-09-03 |
| 45 |
Octopus Energy Group
Octopus Energy is a clean energy technology company that provides green energy s…
|
London | 5K - 10K | $3.2B | Private Equity | 2025-12-29 |
| 46 |
ChargerHelp!
ChargerHelp! provides on-demand repairs and maintenance support from trained and…
|
Los Angeles | 51 - 100 | $20.2M | Series A | 2023-02-14 |
| 47 |
OCOchem
OCOchem develops technology that electrochemically converts CO2 into Green Formi…
|
Richland | 11 - 50 | $13.7M | Undisclosed | 2026-01-14 |
| 48 |
Motiv Electric Trucks
Motiv is a manufacturer of medium duty, zero-emission electric trucks and buses.
|
Foster City | 101 - 250 | $310.8M | Undisclosed | 2025-03-01 |
| 49 |
Aira
Aira is a direct-to-consumer clean energy-tech company that provides heat pumps …
|
Stockholm | 1K - 5K | $709.7M | Series Unknown | 2025-08-11 |
| 50 |
Sealed
Sealed is a residential energy efficiency startup that designs, manages, and fin…
|
New York | 51 - 100 | $97.5M | Series B | 2024-03-15 |