The focus of our sources of energy is shifting from non-renewable to renewable resources because of the hazardous effects of conventional energy sources on the environment. Bioenergy is a renewable source of energy that is produced from woodwaste, straw and animal waste. Bioenergy is stored in biomass in the form of chemical energy. This book delves into the fundamental concepts and theories related to the field of bioenergy while also discussing a number of modern techniques and methods that have been developed due to the rapid technological advancement. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.