This poster was presented at the Training School 2026: AccelMAPs (Accelerating Energy Materials Development: From Legacy Labs to Material Acceleration Platforms). The work presents a simulation-based approach for integrating hydrogen production systems with advanced photovoltaic technologies. It explores the coupling between solar energy conversion and water electrolysis, aiming to optimize hydrogen generation under varying operating conditions. By combining numerical modeling with performance analysis, the study evaluates key parameters affecting system efficiency, energy yield, and operational stability. The results contribute to the development of sustainable solar-to-hydrogen pathways and support the design of next-generation renewable energy systems.