On Wednesday, March 26, 2025, H2Excellence Spanish CoVE in cooperation with The Unidad de Materiales Funcionales para Tecnologías del Hidrógeno hosted a seminar titled “H2 and Renewable Energies: Towards a Sustainable Energy System” at the CIEMAT Headquarters between 09:00 to 14:00 CET in Madrid, Spain. The event emphasized the critical role of hydrogen and renewable energy in achieving a sustainable energy system. The seminar attracted active participation from local companies, academia, and research organizations.