The presentation introduces the “Sustainable Energy Hub Hamburg (SEH)” initiative in the Port of Hamburg. The aim of this initiative is to create an ecosystem that facilitates collaboration within the port. SEH adopts a comprehensive approach to developing the entire hydrogen value chain in the port area, encompassing research and development of sustainable technologies, fuel production, import, storage, distribution, and large-scale use in industry, transport, and mobility. Companies operating in the field of sustainable energy are part of the cluster. This includes not only storage, processing, and refinement but also suppliers and service providers.