OCEAN-H2 is a Spanish national project funded under the CDTI MISIONES programme and coordinated by Acciona. It aims to design and experimentally validate the first offshore green hydrogen plant in Spain, integrating floating wind and solar photovoltaic technologies for generation, storage, and distribution. The project supports Spain’s decarbonization goals through cutting-edge, offshore renewable hydrogen solutions. MATICAL contributes to the project by supporting project management and reporting for selected partners, helping ensure compliance and efficiency in the execution phase.