The term synthetic fuel refers to liquid fuels obtained from ["]blending["] hydrogen produced by electrolysis with carbon-containing gases. One of the most promising ways of creating this fuel is via the Power-to-Liquid (PtL) process, which involves three main steps.

First, electricity, ideally from renewables such as wind, solar or hydro, is converted into hydrogen via electrolysis. Second, concentrated CO2 is obtained either from factories (cement, steel, etc.) or from direct air CO2 capture machines. Finally, the resulting synthetic gases are purified and fed into a Fischer-Tropsch reactor, which completes the PtL cycle by producing a liquid fuel that meets international standards.