This book, now in its Second Edition, is an introductory text on renewable energy sources, technologies and their applications—a subject which is becoming increasingly important worldwide. This edition includes two new chapters that introduce contemporary practices in renewable technologies. It also discusses issues on environmental degradation and its reasons and remedies. Besides this, a large number of numerical problems to correlate theory with typical values and chapter-end review questions are also given to reinforce the understanding of the subject matter. Written in an accessible style, this text is designed to serve the needs of undergraduate students in electrical, mechanical and civil engineering disciplines. It will also be useful for all higher-level courses in energy programmes and multi-disciplinary postgraduate courses in science and engineering. NEW TO THIS EDITION Inclusion of two new chapters—‘Hybrid Systems’ and ‘Environment, Energy and Global Climate Change’. A new section on Distributed Energy System and Dispersed Generation. Appendices on Smart grid and grid system in India Remote village electrification with renewable energy sources Indian Electricity Act 2003, which supports exploration of Renewable Energy.