EWE has successfully completed the HyCAVmobil research project at its gas storage site in Rüdersdorf, Germany, in collaboration with the German Aerospace Center (DLR). The project confirmed the safety and feasibility of storing hydrogen in an underground cavern, opening doors for large-scale hydrogen storage. CEO Stefan Dohler emphasized the significance of green hydrogen in achieving climate targets and ensuring a stable energy supply. The project faced challenges, including hydrogen-specific issues, but after adjustments and successful tests, the cavern's leak-proof nature was confirmed. Additionally, quality measurements showed high hydrogen purity, crucial for applications like fuel cells in vehicles. DLR's research provided important insights, confirming the cavern's suitability as a large-scale storage facility. Plans are in place to transfer knowledge to a large-scale project in Huntorf, Wesermarsch, with the goal of converting a natural gas cavern for hydrogen storage. EWE stresses the need for a clear regulatory framework and financing to support future hydrogen storage projects. CEO Dohler advocates for start-up support to drive market ramp-up, highlighting the importance of synchronizing the development of hydrogen storage systems with the core network for system stability and efficient integration of renewable energy sources.