The Francis College of Engineering, Department of Mechanical Engineering, is hosting a Doctoral Dissertation Proposal defense by Majid Ali on a feasibility study and demonstration of a Renewable Energy/Regenerative Fuel Cell Hybrid Power System. The research focuses on the crucial role of proton exchange membrane (PEM) technologies, such as electrolyzers and fuel cells, in clean energy transitions. PEM electrolyzers efficiently generate hydrogen through water electrolysis, while PEM fuel cells convert hydrogen into electricity with high efficiency and zero emissions. This study aims to bridge existing research gaps by exploring the optimization of PEM systems under dynamic load conditions in renewable energy applications. The investigation begins with optimizing a benchtop system for hydrogen production through PEM electrolysis. Various moisture removal methods were assessed, leading to achieving high hydrogen purity levels. The research then delves into the impact of renewable power fluctuations on PEM electrolyzer performance, highlighting the effects of current fluctuation frequency on system efficiency. Furthermore, the study evaluates key parameters influencing the efficiency of PEM fuel cells, such as fan-assisted airflow, stack temperature, and hydrogen supply pressure. The findings underscore the importance of these factors in enhancing fuel cell performance and reliability under varying conditions. Additionally, the research explores the integration of PEM fuel cells with renewable energy sources to maintain energy stability during power fluctuations and assesses degradation mechanisms under different load conditions. Overall, this work provides valuable insights into the operational dynamics of PEM electrolyzers and fuel cells, emphasizing their adaptability and performance within renewable energy systems. By promoting the practical application of PEM technology for sustainable hydrogen production, this research contributes to the advancement of clean energy solutions in the evolving energy landscape.