Essentials of Sustainable Energy Systems provides a concise and up-to-date look at energy sources, ecoonomics, and engineering applications for a sustainable future. Written by leading experts, and taking a global perspective, this textbook concentrates on the practical applications for achieving energy efficiency and a cleaner environment. Each source of clean energy - wind, solar, biomass, and ocean/tidal - is examined from both the engineering and the economic points of view. Methods for forecasting, evaluating and trnsitioning energy production and usage are integrated, so that the book will be more than just a topical survey of energy sources.