This book is designed for students and professionals who specialize in energy technologies and power plant engineering. It covers the mathematics and physics of both current conversion, such as solar cells, fuel cells, MHD, thermoelectric, and thermionic power generation, but also discusses emerging conversion technologies such as solar thermal, nuclear fusion, and hydrogen energy. Features: Covers both current conversion technologies as well as emerging technologies, such as solar thermal, nuclear fusion, and hydrogen energy Written in simple language, illustrated by diagrams, mathematical analysis, and numerical examples