The book covers the various components of undergraduate course on Non-Conventional Energy Resources (Alternative Energy Resources, Renewable Energy Resources) quite well. This edition is also pedagogically enhanced due to the addition of solved university questions, objective Questions Salient features: • Opening of chapters with Learning Objectives • All chapters are thoroughly revised; at places new topics are added and all data are updated to current level of development • New review questions from different universities are added (updated total 267 questions) • A number of new solved examples (updated total 75) and unsolved numerical problems are added