The goal of the Westküste 100” real-world laboratory is to fly, build and heat more sustainably in the future. The aim is to map a regional hydrogen economy on an industrial scale, on the west coast of the Northern German province Schleswig-Holstein. This province is a strong wind energy region and has excellent geological storage conditions. In Schleswig-Holstein, the cross-industry partnership “WESTKÜSTE100” has been formed between EDF Germany, Holcim Germany, OGE, Ørsted, Raffinerie Heide, Stadtwerke Heide, thyssenkrupp Industrial Solutions and Thüga — together with the Region Heide development agency and the Westküste University of Applied Science. The hydrogen will be used to produce climate-friendly fuels for aircraft as well as fed into gas grids. In fuel production without fossil fuels, unavoidable CO2 from regional cement production is used for the production process. Real-world laboratories offer the opportunity to accelerate the transfer of technology and innovation from research to practice. This enables technical and non-technical ideas and innovations to be developed and tested under real conditions and on an industrial scale. Within the five-year project period, an electrolysis plant with a capacity of 30 MW is to be installed initially. It will provide insights into the operation, maintenance, control and grid serviceability of the plant in order to transfer them to the next scaling step. This could, for example, be an electrolysis plant of 700 MW, for which the electricity is generated by an offshore wind farm.