In the pursuit of combating the challenges of climate change, the advancement of green technologies like hydrogen-based power systems has emerged as a promising solution. Hydrogen, with its multifaceted applications as a fuel-cell feed material, direct fuel, energy carrier, and storage medium, holds the potential to decarbonize industrial processes, vehicles, aircraft, and other sectors where CO₂ emissions reduction via electrification is complex or costly. One particularly exciting prospect is the use of hydrogen in aviation to enable carbon-free flight. Green hydrogen production becomes viable with abundant renewable energy for the conversion process. Pairing hydrogen with fuel cells and electric motors presents opportunities for regional and short-haul flights, addressing the limitations posed by battery weight. Infineon Technologies' high-power semiconductors are instrumental in enhancing hydrogen power conversion efficiency. The integration of high-power switches in hydrogen systems optimizes performance, contributing to the advancement of electricity generation from renewables. By combining renewable energy sources with Infineon's power semiconductors, the scalable production and utilization of green hydrogen become feasible. Wolfgang Granig, Lead Principal System Architect at Infineon, sheds light on the development of a hydrogen fuel-cell system tailored for green aviation purposes. These innovative technologies underscore the potential of hydrogen in revolutionizing sustainable power solutions, particularly in the aviation industry. The collaborative efforts of companies like Infineon Technologies are driving the progress towards a greener and more energy-efficient future.