The growing global energy demand with the increasingly stronger environmental impact deriving from the use of fossil fuels has determined for many countries a greater interest in the inclusion of renewable resources in the energy market. Currently, almost the 80% of the global energy supply derives from fossil fuels, therefore the possibility of producing high energy density molecules, such as hydrogen and carbon-based fuel, from conversion processes that exploit renewable resources, such as artificial photosynthesis, could represent an excellent solution. SoFiA - Soap Film based Artificial Photosynthesis, just funded by the European Union under the prestigious H2O2O - FETOPEN program, aims at the realization of soap-based membranes capable of converting carbon dioxide into fuel in a robust way and for long periods of time.