5th International Thales Congress on Life, Engineering, Architecture and Mathematics, Cairo, Mısır, 16 - 18 Ekim 2025, cilt.1, sa.1, ss.33-42, (Tam Metin Bildiri)
The rapid adoption of hydrogen as a clean transportation fuel will increase the demand for sustainable and reliable refueling infrastructure, particularly in metropolitan areas with high energy consumption such as Istanbul. In this context, solar PV-supported on-site hydrogen refueling stations (HRS) are expected to play a critical role in the urban energy transition. The aim of this study is to comprehensively analyze the impacts of solar PV integration under different system configurations on technical performance, economic feasibility, and environmental outcomes. An on-site HRS model was developed by combining photovoltaic (PV) generation and battery energy storage systems to supply electrolyzers and hydrogen storage units, and optimal sizing of PV arrays, electrolyzer capacity, and storage tanks was performed using HOMER Pro simulations. The analysis considered performance indicators such as Levelized Cost of Hydrogen (LCOH), self-sufficiency ratio, and CO₂ emission reductions, while scenario and sensitivity analyses were conducted across different levels of PV penetration. The results indicate that in optimal on-site scenarios, more than 50% reduction in carbon emissions can be achieved, the LCOH ranges between 7–12 $/kg, and grid dependency is significantly reduced. Overall, the findings demonstrate that solar PV-supported on-site configurations provide more environmentally friendly, economically feasible, and sustainable solutions compared to grid-only systems. Accordingly, this study offers a practical roadmap for HRS deployment in urban areas and contributes to the integration of hydrogen mobility into Turkey’s sustainable energy transition.