The European Institute for Energy Research (EIFER) was created in September 2001 as a European Economic Interest Grouping between EDF (Electricité de France) and KIT (Karlsruhe Institute of Technology) and is located in Karlsruhe. EIFER is active in the several areas of energy transitions, from strategic planning for sustainable cities to energy systems. One important research topic included in EIFER’s activities is clean mobility: the institute aims at developing, implementing and testing innovative infrastructure concepts based on clean electricity to ensure the economic viability of energy transition in transport. Fuel cell hydrogen vehicles are the core application for electrolysis technologies tested in the laboratories of EIFER and in demonstration projects, aiming at developing efficient, sustainable and affordable refuelling infrastructure.