International Journal of Hydrogen Energy, cilt.241, 2026 (SCI-Expanded, Scopus)
Among renewable energy sources, geothermal power plants stand out due to their high capacity factors and reliable, uninterrupted power generation, making them suitable for next-generation hydrogen systems. Effective on-site hydrogen production requires safe, efficient, and cost-effective storage technologies compatible with Proton Exchange Membrane (PEM) fuel cells. Given Türkiye's expanding geothermal capacity, identifying transferable hydrogen storage solutions is critical. This study compares hydrogen storage methods using TOPSIS and WASPAS multi-criteria decision-making approaches based on gravimetric capacity, volumetric density, efficiency, safety, and cost. Both methods identify sodium borohydride (NaBH4) as the most suitable option.