Climate change is challenging human life and infrastructures by modifying the environment in which we live at a difficult-to-adapt rate. The transition to a low carbon and sustainable society is key to avoid a further decline of the climate and the environment and can be achieved by adopting renewable energy sources. The necessary increase in renewable energy production faces challenges like identifying cost effective power storage solutions and adapting to inadequate electricity grid infrastructures. Renewable energy, however, cannot be the only solution for sectors that are hard to electrify. Green hydrogen from renewable-based electricity can represent a solution for decarbonization. Hydrogen, produced from renewable resources, storable, and with a high potential to replace fossil fuels in the most energy intensive, hard-to-decarbonize and polluting applications, can play a pivotal role in climate change mitigation.