Electrofuel

An electrofuel, or e-fuel, is a synthetic hydrocarbon or hydrogen-carrier produced from green hydrogen (renewable-powered water electrolysis) and a carbon or nitrogen source, storing electrical energy in liquid or gaseous chemical form. For shipping the main electrofuels are e-methanol, e-methane, e-ammonia, and Fischer-Tropsch e-diesel. Under FuelEU Maritime (EU Regulation 2023/1805) electrofuels qualify as renewable fuels of non-biological origin (RFNBO) and earn a reward multiplier toward the vessel’s greenhouse-gas-intensity target through 2033. Round-trip efficiency is low, often 40 to 50 percent power-to-fuel, so well-to-wake CO2 depends on truly additional renewable power and a sustainable CO2 source.