The Second Edition of the book incorporates information on new energy delivering materials such as biofuels, high energy materials like hydrogen, direct energy conversion techniques, fuel cells and energy audit. While retaining the basic structure of the earlier edition, the contents are improved based on feedback received from the teachers and student community. Features · Covers latest technologies and energy systems, with environmental perspectives. · Separate chapter on Direct Energy Conversion is added, along with preview of Energy Audit. · Additional Chapters on protected agricultural techniques are covered along with economics of Greenhouses.