CO2-based fuel successfully powers military vehicles, planes

By Corbin Hiar | 04/15/2025 07:05 AM EDT

AirCo says its “e-fuel” could help the military reduce or eliminate its reliance on strategically vulnerable refueling supply lines.

The military ran test flights with AirCo's jet fuel alternative, made with carbon dioxide.

The military ran test flights with AirCo's jet fuel alternative, made with carbon dioxide. Photo courtesy of AirCo

A sustainable fuel startup from Brooklyn said it has successfully demonstrated that its carbon dioxide-based products can power U.S. military vehicles, boats and planes — offering the Pentagon a glimpse at a more climate-friendly and resilient national defense.

The military conducted test rides and flights using AirCo’s fuel over the past few years, and the startup announced the results Tuesday.

“The reason why they’re really important is that they’re real results,” CEO Gregory Constantine, who co-founded the startup in 2017, said in an interview ahead of the announcement. “No one else has done it.”

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AirCo produces diesel and jet fuel alternatives that can be carbon neutral by using carbon dioxide, hydrogen, electricity and its proprietary technology. The carbon intensity and price of the startup’s so-called e-fuels will depend on the sources of those inputs, Constantine said.

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