The transport sector is a significant source of emissions, making the pursuit for innovative decarbonization solutions crucial to tackling climate change and reaching sustainability objectives. E-fuels typically derived from renewable energy, water, and captured carbon dioxide, are a promising pathway to sustainability. Such fuels can highly reduce net carbon emissions by reusing CO2 that has emanated into the atmosphere and creating a circular carbon economy. Moreover, e-fuels are scalable and storable, making them suitable for the various transport modes, such as aviation, maritime, and heavy-duty road transport, where high energy density and long-range capabilities are vital.