GREEN HYDROGEN

Among the different shades of hydrogen, GREEN HYDROGEN – meaning hydrogen produced from renewable energy – is the most suitable one for a fully sustainable energy transition. The most established technology options for producing green hydrogen is water electrolysis fuelled by renewable electricity. This technology is the focus of this report. Other renewables-based solutions to produce hydrogen exist.3 However, except for SMR with biogases, these are not mature technologies at commercial scale yet (IRENA, 2018). Green hydrogen production through electrolysis is consistent with the net-zero route, allows the exploitation of synergies from sector coupling, thus decreasing technology costs and providing flexibility to the power system. Low VRE costs and technological improvement are decreasing the cost of production of green hydrogen. For these reasons, green hydrogen from water electrolysis has been gaining increased interest.