Today the attention of whole world is focused on preservation of environment. Non-conventional Energy Sources can provide clean energy, preserving environment, reducing pollution and deforestation. This book discusses the developments in the field of Non-conventional Energy Resources and their applications. The topics are fully covered so that the students of B.Tech. may use for their Elective courses such as Non-conventional Energy Resources, Renewable Energy and Solar Energy Engineering. The topics are: Solar Radiation, Solar Energy Collectors, Energy Resources, Solar Cell, MHD Power Generator, Wind Energy, Biomass, OTEC, Tidal and Wave Energy, Hydrogen Energy, Micro Hydel Power and Storage of Solar Energy.