Preface to the Special Issue Dedicated to the Hydrogen Power Theoretical and Engineering Solutions International Symposium (HYPOTHESIS) – XVII Edition

The “Green Deal”, that most of the countries all of around the world are planning for the near future, represents the biggest challenge and opportunity of this century to change the approach of producing energy for promoting ever more the sustainable development, the environmental friendly processes and renewable sources exploitation. Hydrogen will be part of this revolution and it is expected that it will represent, together with electricity from renewable energy sources, the green energy carrier of the future. Currently, the role and the perspectives of the hydrogen utilization as energy vector may be resumed by the concepts of the so-called “hydrogen economy”, which is driving the creation of new energy infrastructures, able to exploit renewable feedstocks instead of the derived of the fossil fuels. The aforementioned scopes seem to be particularly ambitious, especially in the countries in which the utilization of derived of fossil fuels is quite impressive. Nevertheless, the transition from a fossil fuel-based to a sustainable and green society is already started and it will allow safer and cleaner industrial processes and improve the quality of the human life as well.