The article discusses the role of hydrogen-based power systems in tackling climate change challenges, particularly in industrial decarbonization and aviation. Hydrogen is highlighted as a versatile solution that can be used as a fuel-cell feed material, direct fuel, energy carrier, and storage medium. The use of hydrogen in fuel cells and electric motors is lauded for its potential in aviation, especially for short-haul flights where battery weight is a concern. Infineon Technologies' high-power semiconductors are praised for their contribution to optimizing hydrogen power conversion. The article emphasizes the synergy between renewable energy sources and Infineon's semiconductors in enabling large-scale green hydrogen production. Wolfgang Granig from Infineon elaborates on the development of a hydrogen fuel-cell system for green aviation. Overall, the piece sheds light on the promising advancements in using hydrogen to power carbon-free flights and decarbonize hard-to-electrify economic sectors.