Hydrogen Production, Transportation, Storage, and Utilization: Theoretical and Practical Aspects is a comprehensive introduction to the theoretical and practical aspects of hydrogen as an energy vector. The book walks the reader through the upstream, midstream, and downstream at each stage, explaining concepts, methods, applications, and economics to provide a broad understanding of hydrogen energy. It explains each of the key aspects of hydrogen energy in dedicated chapters, guiding readers through the fundamentals of hydrogen as an energy vector to economic, safety, and environmental considerations. Chapters analyze the methods for hydrogen production and provide a review of the fundamental, technological, and environmental aspects of these methods while also examining physical, chemical, and material methods for hydrogen storage and explaining the corresponding, underlying theory and concepts. Other sections explore the downstream aspects of hydrogen in transportation, power generation, energy supply in industry, and as a feedstock in refineries and the chemical industry.