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.