Dr. Thomas Kattenstein, PhD engineer in mechanical engineering specialising in energy technology, is a Managing Consultant at DMT EE ENERGY ENGINEERS GmbH, and leader of the Competence Center Hydrogen. With extensive experience in the field of hydrogen and fuel cells, he was head of the cluster of fuel cells, hydrogen, and electromobility at EnergieAgentur.NRW for over 10 years. He is responsible for projects related to the development and market introduction of hydrogen applications, working closely with ministries, authorities, companies, and research institutions, and possesses an extensive network. Dr. Thomas Kattenstein is involved in various national and international initiatives, and he authors studies, concepts, professional articles, and lectures on these subjects. Dr. Kattenstein is Honorary Chairman of the h2-netzwerk-ruhr, the largest cluster of hydrogen related companies in the German Ruhr area,