Austrian Airlines is conducting a trial operation at Vienna Airport to test the practicality of using hydrogen as an energy supplier for aircraft maintenance work. The innovative hydrogen generator, H2Genset, is being used for the first time to provide emission-free power supply to an Austrian Airlines Airbus A320, utilizing a highly efficient frequency converter. The project partners seek to gain expertise and familiarize themselves with the infrastructure needed for potential future applications of hydrogen in mobile energy supply at the airport. This initiative is a crucial step towards reducing the airport's CO2 footprint. Austrian Airlines, as part of the Lufthansa Group, is dedicated to environmental sustainability through various projects, including fleet modernization, flight operations optimization, and the development of sustainable aviation fuels. The Lufthansa Group has set ambitious sustainability goals, aiming for a neutral CO2 balance by 2050 and a 50% reduction in net CO2 emissions by 2030 compared to 2019 through a combination of reduction and compensation measures.