Solar-Hydrogen Energy Systems is a collection of papers that discusses the advancements in the research of alternative energy technologies that utilizes solar-hydrogen energy systems. The text first introduces the concept of solar-hydrogen energy system, and then proceeds to covering the technical topics in the subsequent chapters. The next chapters talks about the thermodynamics of water-splitting and water electrolysis. Next, the selection details direct thermal decomposition of water. The selection also discusses different processes to produce hydrogen, such as thermochemical, photochemical, and biochemical. The ninth chapter talks about solar energy storage by metal hydride, and the last chapter deals with direct solar energy conversion at sea. The book will be of great interest to scientists, engineers, and technicians involved in the research, development, and implementation of alternative energy technology.