For about six years, H2 Energy AG has been working to build a renewable hydrogen ecosystem in Switzerland. In January 2021, it was awarded the "Watt d'Or" by the Swiss Federal Office of Energy (SFOE) for its efforts. In an interview, Rolf Huber, Chairman of the Board of H2 Energy, looks back on the last few years – and on Empa's contribution to the H2 Energy success story.