The €5m Phoenix project, backed by the German government, aims to develop a highly efficient hydrogen engine prototype capable of delivering carbon-neutral heat and electricity. This initiative, spearheaded by Rolls-Royce Power Systems and involving key partners like Robert Bosch AG and the Technical University of Munich, seeks to create a next-generation hydrogen engine specifically designed for clean energy production. The project will focus on developing unique components such as injection systems, piston groups, ignition systems, and lubricants to optimize the engine's performance. Dr. Jörg Stratmann, CEO of Rolls-Royce Power Systems, emphasizes the importance of combustion engines in ensuring a reliable energy supply during the energy transition, highlighting the role of sustainable fuels in making these engines climate-friendly. The project consortium's combined expertise is seen as a key factor in successfully addressing the technical challenges associated with developing efficient hydrogen engines. Rolls-Royce has already made progress in using hydrogen as a fuel for combustion engines, but the Phoenix project will concentrate on creating a more efficient hydrogen engine from scratch. This three-year project not only aims to improve the efficiency of hydrogen engines but also supports Germany's strategy of integrating hydrogen into its energy mix to balance the intermittency of renewable sources. The project anticipates that as the availability of green hydrogen increases, the technology developed in Phoenix will be pivotal for highly efficient hydrogen cogeneration plants. Tobias Ostermaier, president of Stationary Power Solutions at Rolls-Royce's Power Systems division, foresees the readiness of the technology once green hydrogen production scales up, signaling a promising future for clean energy production.