This comprehensive book consists of research-focused information in respect to energy conservation for understanding of energy fundamentals, design and applications. It encompasses topics of fundamental knowledge in energy conservation and its applications in some industries. This book is a compilation of coherent research analysis conducted by experts in the field of energy from all over the world. The topics covered in the book are energy basics from cosmic radiation, tidal waves and dams. It analyzes the potential of utilizing energy from sustainable resources and how energy consumption may be reduced using various new technologies. This book discusses space energy, barotropic and baroclinic tidal energy, understanding energy conservation in biological context, Earth shelters, hydro power, biofuel from groundnut oil and low energy consumption in industrial production. It targets students, educators, researchers, scientists, engineers and energy practitioners.