Elnur/Shutterstock Save for later Print Download Share LinkedIn Twitter Efuels promise carbon savings and can be dropped into existing engines. They are attracting more attention as a solution for decarbonizing aviation. Also known as synfuels, they are chemically identical to oil products made from fossil fuels, and their tailpipe emissions are equivalent. Efuels can be produced using captured carbon and achieve carbon savings much earlier in the value chain, since they would avoid upstream emissions associated with traditional hydrocarbon production. While efuels are envisioned for multiple sectors — including passenger cars, heavy trucks, and shipping — aviation is seen as the most important because its reliance on liquid fuels poses a steep hurdle to decarbonization.
