Top 9 e-Fuel startups

Updated: Apr 14, 2026
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These startups produce e-fuels, such as synthetic gasoline, diesel or aviation fuels, that serve as clean alternatives to traditional fossil fuels.
1
Infinium
Country: USA | Funding: $1.1B
Infinium offers an electrofuels solution to decarbonize the transportation sector using today’s infrastructure.
2
INERATEC
Country: Germany | Funding: €208M
INERATEC provides sustainable fuels, gas-to-liquid, power-to-gas, and power-to-liquid application products.
3
Air Company
Country: USA | Funding: $108.1M
Air Company converts carbon dioxide into products such as perfume, vodka, hand sanitizer, and ethanol-based aviation fuel. The company develops and licenses catalytic process technologies that enable the production of fuels and chemicals closer to their use. It's flagship product is sustainable aviation fuel AIRMADE SAF. AIRCO designs, manufactures, and scales physical production systems that transform synthetic fuels and chemical processes into operational infrastructure. These systems are deployed as modular or large-scale assets and are designed to operate in environments where uninterrupted fuel supply, availability, and reliability cannot be guaranteed.
4
Aether Fuels
Country: USA | Funding: $42.5M
Aether Fuels is a cutting-edge climate technology startup.
5
Greenlyte
Country: Germany | Funding: €18.5M
Greenlyte Carbon Technologies is developing a low-temperature process for directly capturing carbon dioxide from the air and e-fuel production. The startup has built its own pilot plant, which captures 40 tons of carbon dioxide from the atmosphere annually and produces approximately 5 tons of synthetic natural gas. The plant is based on Greenlyte's LiquidSolar platform for producing environmentally friendly molecules. The technology combines carbon capture with syngas production - a mixture of hydrogen and carbon monoxide that can be converted into various e-fuels, such as LNG, e-methanol and sustainable aviation fuel (e-SAF). Greenlyte plans to build a large-scale e-methanol plant in Marl, Germany, by 2027.
6
Oxylus Energy
Country: USA | Funding: $4.5M
Oxylus Energy provides new carbon utilization technology for the generation of e-fuels. It produces an alternative fuel from converting CO2 into green methanol.
7
Spark e-Fuels
Country: Germany | Funding: €2.6M
Spark e-Fuels is a supplier of co2-neutral aviation fuel that is designed to be carbon-neutral.
8
FuelX Innovation
Country: USA | Funding: $2M
FuelX Innovation produces Alan - hydrogen-based solid fuel. Alan is an aluminum hydride (AlH3) solid-state hydrogen storage material. Alan has three times the energy per unit weight (Wh/kg) of lithium-ion batteries, making it critical for aviation and personal energy applications. Alan is safe, can be stored at atmospheric pressure for decades, can be transported by land and air, and provides fuel cells with low-pressure hydrogen. FuelX also produces energy systems for a variety of applications, including power systems for soldiers, electric scooters, aviation and personal watercraft. The company has a contract with the U.S. Army to produce 250-Wh energy cartridges for soldiers.
9
Circularity Fuels
Country: USA
Circularity Fuels is on a mission to replace fossil fuels with hydrocarbons made from carbon dioxide already in the air.
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Alexander Gillet
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com