Fundamentals of Renewable Energy Sources discusses the importance of renewable energy sources which have become most important topics from both the economical and environment point of view. The book also provides a platform for teachers, researchers, manufacturers and students etc. to understand the basic fundamental principle, basic energy balances, modeling, economic analysis and applications of renewable energy sources. The renewable energy sources includes solar, photovoltaic, Biomass, Biofuels, Biogas, Hydro, Wind, Geothermal, Ocean, Tidal, Waves and Animal energy. The elements of heat transfer, thermodynamic cycles in biopower generation, environmental impact, embodied energy and life cycle cost analysis of renewable energy sources have also been discussed.