GRTgaz has kicked off feasibility studies for the HY-FEN project, which seeks to establish an 850-kilometre hydrogen transport network in France. This network is designed to link various industrial consumption basins and hydrogen storage sites across the country. By 2030, the project plans to connect regions such as Fos-Marseille, the French Chemical Valley, and the Grand-Est region, ensuring a secure supply through extensive underground storage. The overarching goal is to create a hydrogen highway that will further extend to the Occitania region in the south of France and integrate with projects like BarMar as part of the European H2Med corridor. Additionally, the network will have connectivity to the German Kernnetz hydrogen network via the MEGAL network in eastern France. This project signifies a major advancement in establishing regional hydrogen infrastructure and promoting sustainable energy practices.