This book on renewable energy engineering consolidates the most recent research on current technologies, concepts and commercial developments in the field. it provides an overview of renewable energy engineering practices and technologies and details important concepts like designing of solar photovoltaic system, solar thermal systems, solar water pumping system, solar greenhouse, fuel cell technology, hydro power, wind energy technology, bioenergy, geothermal energy, etc. the subject matter is designed keeping in view the course curricula prescribed by central and state universities in india and abroad, and this book is aimed at students, researchers, academicians, scientists, teachers, policy makers, entrepreneurs, extension workers professionals and experts. print edition not for sale in south asia (india, sri lanka, nepal, bangladesh, pakistan or bhutan)