| # | Company | Location | Employees | Total Funding | Last Round | Last Funded |
|---|---|---|---|---|---|---|
| 1 |
General Matter
General Matter is a nuclear energy company that produces enriched uranium fuel f…
|
San Francisco | 11 - 50 | $50.0M | Series Unknown | 2025-04-14 |
| 2 |
Twelve
Twelve is a carbon transformation company converting captured carbon dioxide int…
|
Berkeley | 251 - 500 | $929.4M | Series Unknown | 2025-05-06 |
| 3 |
LanzaJet
LanzaJet is a provider and producer of Sustainable Aviation Fuel (SAF) technolog…
|
Illinois City | 101 - 250 | $311.5M | Corporate Round | 2026-02-19 |
| 4 |
Bapco Energies
Bapco Energies is an oil and gas holding company that specializes in energy inve…
|
Manama | 501 - 1K | $4.0B | Debt Financing | 2025-03-18 |
| 5 |
HIF Global
HIF Global is an eFuel company engaged in the production of carbon-neutral fuels…
|
Santiago | 101 - 250 | $480.0M | Corporate Round | 2024-09-19 |
| 6 |
Energy Fuels
Energy Fuels produces and supplies critical minerals used in nuclear energy, adv…
|
Lakewood | 1K - 5K | $824.6M | Post Ipo Debt | 2025-10-01 |
| 7 |
FuelCell Energy
FuelCell Energy is an integrated fuel cell company that designs, manufactures, i…
|
Danbury | 251 - 500 | $468.8M | Post Ipo Debt | 2025-12-01 |
| 8 |
Azzera
Azzera created a B2B SaaS platform that allows aviation companies to track clima…
|
Saint Laurent | 11 - 50 | $2.0M | Seed | 2024-01-05 |
| 9 |
Gevo
Gevo focuses on the production of isobutanol, thereby bringing renewable and cos…
|
Englewood | 101 - 250 | $2.1B | Post Ipo Debt | 2025-07-10 |
| 10 |
Dynelectro
Dynelectro is a green energy technology company that focuses on reducing CO2 emi…
|
Copenhagen | 11 - 50 | $26.6M | Grant | 2024-07-11 |
| 11 |
Centrus Energy
Centrus Energy supplies low enriched uranium (LEU) for commercial nuclear power …
|
Bethesda | 251 - 500 | $2.2B | Post Ipo Equity | 2025-11-06 |
| 12 |
Infinium
Infinium produces synthetic electrofuels to decarbonize transportation and chemi…
|
Sacramento | 51 - 100 | $69.0M | Series C | 2025-01-16 |
| 13 |
PolyCycl
PolyCycl converts non-recyclable, low-grade mixed waste plastics to petroleum fu…
|
Haryana | 11 - 50 | $2.9M | Series A | 2026-01-20 |
| 14 |
Corpay
Corpay provides specialized payment products and services to commercial fleets, …
|
Norcross | c 10001 max | $1.1B | Post Ipo Debt | 2025-02-24 |
| 15 |
Frontieras North America
Frontieras North America is an energy and environmental technology company that …
|
Cheyenne | 11 - 50 | $155.4M | Private Equity | 2024-12-03 |
| 16 |
Maritime Fusion
Maritime Fusion specializes in the development and construction of high-temperat…
|
San Francisco | 1 - 10 | $5.0M | Seed | 2025-11-24 |
| 17 |
FirstElement Fuel
Low temperature fuel cell and liquid fuel reformer technology
|
Newport Beach | 11 - 50 | $136.7M | Corporate Round | 2025-12-12 |
| 18 |
Occidental Petroleum
Occidental Petroleum is an international oil and gas exploration and production …
|
Houston | c 10001 max | $5.6B | Post Ipo Equity | 2022-09-29 |
| 19 |
Yoshi
Yoshi fills a vehicle’s tank wherever a driver wanted instead of the owner havin…
|
Nashville | 51 - 100 | $90.5M | Series C | 2024-04-10 |
| 20 |
ClearFlame Engines
ClearFlame decarbonizes heavy-duty engines while reducing operating costs, to pr…
|
Geneva | 11 - 50 | $51.1M | Series B | 2023-03-09 |
| 21 |
Ambient Fuels
Ambient Fuels is a green energy developer that delivers green hydrogen solutions…
|
New York | 1 - 10 | $250.0M | Private Equity | 2023-05-17 |
| 22 |
Curio
CURIO is a nuclear technology company that develops NuCycle systems to recycle n…
|
Washington | 11 - 50 | $12.6M | Grant | 2026-02-06 |
| 23 |
Fuel Me
Where Fuel Meets Intelligence
|
Chicago | 51 - 100 | $30.0M | Series A | 2024-03-20 |
| 24 |
Brineworks
Brineworks develops direct air capture technology for various carbon dioxide app…
|
Amsterdam | 11 - 50 | $12.0M | Seed | 2025-09-19 |
| 25 |
MAHLE
MAHLE offers innovative mobility solutions that stand for clean air, fuel effici…
|
Stuttgart | c 10001 max | $300.7M | Post Ipo Debt | 2022-08-30 |
| 26 |
INERGIO
INERGIO is a reliable power power supply yet is a challenge to off-grid systems.
|
Lausanne | 11 - 50 | $3.7M | Grant | 2025-09-01 |
| 27 |
Specter Aerospace
Specter Aerospace is a developer of integrated technology packages.
|
Cleveland | 11 - 50 | $12.9M | Series Unknown | 2024-07-17 |
| 28 |
Compact Syngas Solutions
Compact Syngas Solutions develops non power applications for synthesis gas utili…
|
Wales | 11 - 50 | $5.1M | Grant | 2025-12-23 |
| 29 |
Fulcrum Bioenergy
Fulcrum Bioenergy converts household garbage into low-carbon transportation fuel…
|
Pleasanton | 101 - 250 | $281.1M | Grant | 2023-02-16 |
| 30 |
Electrified Thermal Solutions
Electrified Thermal Solutions replace fossil fuels with renewable heat in every …
|
Medford | 11 - 50 | $24.3M | Series Unknown | 2025-09-04 |
| 31 |
ATOBA Energy
ATOBA Energy is an energy manufacturing company that specializes in producing Su…
|
Lyon | 1 - 10 | $1.4M | Pre Seed | 2025-01-11 |
| 32 |
Emvolon
Emvolon is a technology company that converts wasted resources into low-cost gre…
|
Boston | 11 - 50 | $2.5M | Grant | 2025-05-16 |
| 33 |
XFuel
XFuel produces sustainable and net-zero road, marine and aviation drop-in fuels
|
Dublin | 11 - 50 | $29.0M | Series A | 2025-02-03 |
| 34 |
Erg Bio
Erg Bio is a biomanufacturing company enabling affordable, local production of s…
|
Dublin | 1 - 10 | $6.5M | Seed | 2025-11-18 |
| 35 |
Everfuel
Everfuel is a green fuel company that commercializes green hydrogen for mobility…
|
Herning | 51 - 100 | $76.7M | Grant | 2024-12-13 |
| 36 |
Sora Fuel
Sora Fuel makes jet fuel from just air, water, and renewable energy.
|
Cambridge | 1 - 10 | $6.0M | Series Unknown | 2026-04-08 |
| 37 |
ICODOS
ICODOS de-fossilizes the shipping and chemical industries with a patented, break…
|
Mannheim | 1 - 10 | $2.2M | Pre Seed | 2023-10-06 |
| 38 |
Mash Makes
MASH Makes' scalable pyrolysis & gasification platform has the potential to remo…
|
Copenhagen | 51 - 100 | $18.8M | Debt Financing | 2024-02-21 |
| 39 |
YPF
YPF is an oil and gas company.
|
Buenos Aires | c 10001 max | $2.3B | Post Ipo Debt | 2025-10-28 |
| 40 |
Cowboy Clean Fuels
Cowboy Clean Fuels commercializes a process to produce renewable natural gas fro…
|
Denver | 1 - 10 | $48.2M | Debt Financing | 2025-10-15 |
| 41 |
Oxylus Energy
Oxylus Energy provides new carbon utilization technology for the generation of e…
|
New Haven | 1 - 10 | $4.5M | Non Equity Assistance | 2025-04-01 |
| 42 |
Carbon Recycling International
CRI offers a world-leading process technology to produce methanol from carbon di…
|
K├│pavogur | 11 - 50 | $66.3M | Undisclosed | 2023-06-19 |
| 43 |
Safco Venture Holdings
Safco Venture Holdings decarbonize the aviation fuel industry.
|
Lahore | 101 - 250 | $35.0M | Debt Financing | 2024-12-05 |
| 44 |
NitroVolt
NitroVolt is a green ammonia startup developing a small-scale ammonia synthesis …
|
Copenhagen | 1 - 10 | $4.5M | Seed | 2024-11-13 |
| 45 |
Rosneft
Rosneft is a Russia-based petroleum company that provides hydrocarbon exploratio…
|
Moscow | c 10001 max | $13.2B | Post Ipo Debt | 2022-09-13 |
| 46 |
CleanJoule
CleanJoule is a full-performance sustainable aviation fuel (SAF) inventor.
|
Salt Lake City | 11 - 50 | $50.0M | Private Equity | 2023-05-31 |
| 47 |
Kastrati Group
Kastrati Group is an energy company that supplies petroleum products.
|
Durrës | 1K - 5K | $28.9M | Undisclosed | 2025-01-03 |
| 48 |
Covercress
Covercress is a biotechnology company that manufactures an oilseed crop for food…
|
St Louis | 11 - 50 | $45.9M | Series C | 2022-04-26 |
| 49 |
Siluria Technologies
Siluria Technologies is a material innovation company developing processes for t…
|
San Francisco | 51 - 100 | $150.7M | Series E | 2016-07-13 |
| 50 |
Fusion Fuel Cycles
Fusion Fuel Cycles is a provider of fuel cycle technologies that supplies end-to…
|
Chalk River | 11 - 50 | $34.5M | Debt Financing | 2025-09-18 |