The Hydrogen Lab Bremerhaven (HLB) is conducting innovative research to address the challenges of integrating renewable energy into decentralized power grids. One key solution being explored is the production of green hydrogen to enhance the security of energy supply. The lab, in partnership with the Fraunhofer Institute for Wind Energy Systems IWES and companies like Wenger Engineering GmbH, is focusing on investigating the interaction between wind turbines and electrolyzers in real-life conditions. A significant component of the research at HLB is the utilization of a one megawatt ME450 PEM electrolyzer from Quest One. This electrolyzer, powered by on-site wind turbines, demonstrates the potential of electrolysis technology to efficiently store energy by converting excess wind energy into hydrogen. The project emphasizes the importance of collaboration between research institutions and industry to drive sustainable energy solutions for the future. The research at HLB also highlights the deep cross-sector integration of electrolysis technology, exploring the use of by-products and reconversion technologies for various applications, both on-grid and off-grid. By accelerating the production and integration of green hydrogen, the project aims to contribute to the development of a sustainable energy ecosystem at both national and international levels.