The development of fuel cell technology has played a crucial role in advancing effective methodologies for hydrogen utilization, particularly when hydrogen is employed as an energy storage solution. Multi-stack fuel cell systems, in particular, offer the potential to enhance overall system efficiency by interconnecting multiple cells, with the goal of reducing the energy required to power auxiliary systems. SINTEF, one of Europe’s largest independent research organizations, aims to support Norway's ambition to decarbonize the offshore petroleum sector while maintaining international competitiveness through the CleanOFF project. This project explores two main pathways: integrating renewable energy sources with hydrogen as the primary energy storage solution and utilizing compact carbon capture and storage systems.