The next step in the restructuring of Bremen's steel industry has been taken: ArcelorMittal Bremen, swb AG and EWE AG want to jointly implement the largest industrial hydrogen project to date in Bremen. As part of the Hybit, Hydrogen for Bremen industrial transformation, project, the three companies are receiving funding of over 10 million euros from the State of Bremen to build an electrolysis plant, which corresponds to around half of the total investment budget. The project includes the construction of a 12 MW electrolysis plant that will use renewable energy to produce green hydrogen. The electrolysis capacity is to be gradually scaled up to up to 300 MW later. Ultimately, the overall requirement for climate-neutral steel production in Bremen is to be covered by expanding the pipeline infrastructure.The construction of the electrolysis plant marks the starting point for the use of green hydrogen in Bremen's steel production and is an important component of the transformation. ArcelorMittal Bremen will use the first hydrogen in the existing plants, the next stage will be the use of new production technologies so that ArcelorMittal Bremen can produce completely climate-neutral steel in Bremen by the mid-30s. A further expansion of the hydrogen capacity will be necessary for this. In the first phase of decarbonization, ArcelorMittal Flachstahl Deutschland intends to replace two blast furnaces in Bremen and Eisenhuttenstadt, thereby replacing the technology for the production of 3.6 million tonnes of steel with a process with a direct reduction system and a subsequent electric arc furnace. The complete conversion of this production to green hydrogen will result in savings of more than five million tons of CO2 per year. To this end, ArcelorMittal has submitted further applications for subsidies as part of the IPCEI program for large-scale hydrogen projects.swb and EWE are building the electrolysis plant in the joint venture Hydrogen Bremen GmbH at the Bremen-Mittelbüren power station, initially with an output of 12 MW. The installation takes place in an empty machine hall and in series of modules in order to guarantee the flexibility for an adaptation to future requirements.