This book elucidates the concepts and innovative models around prospective developments with respect to energy. It presents the importance and use of energy in the present environment. Energy in all its forms helps life, be it in kinetic form or thermal, electrical, potential, gravitational or even magnetic form. The aim of this book is to provide readers with a thorough understanding of this vast subject. It is a compilation of chapters that discuss the most vital concepts and emerging trends in the field of energy. Those with an interest in this field would find the book helpful.