Since the last century, humanity has been facing challenging scenarios, like global warming, environmental
pollution and the dramatic increase in energy demand. In this framework, green hydrogen has been identified
as the most promising energy vector to achieve carbon neutrality. With this respect, the idea of the present work
is to combine the Reverse Electrodialysis (RED) membrane process with hydrogen production. Experimental
RED tests were carried out by feeding the unit with different concentrated solutions to study the process
performance. Collected results suggest that this approach is a viable way to produce hydrogen with high faradic
efficiencies, up to a maximum of 99 %, highlighting also the technology advantage of producing hydrogen by
exploiting the salinity gradient energy, thus leading to a production with Specific Energy Consumption close to
zero