This book, now in its Third Edition, is an introductory text on renewable energy sources, technologies and their applications—a subject that is becoming increasingly important worldwide. While technological development has improved the efficiency of Energy Conversion Systems (ECS) from renewable resources, Energy Conservation is also given due importance. The authors have tried to incorporate such changes in this thoroughly revised edition. Besides this, a large number of numerical problems to correlate theory with typical values, several case studies and chapter-wise review questions are also given to reinforce the understanding of the subject matter. Written in an accessible style, this textbook is intended to serve as an introductory text for the subject of energy and environment for all branches of Engineering and Environmental Sciences. It will also be useful for all higher-level courses in energy programmes and multi-disciplinary postgraduate courses in science and engineering. NEW TO THIRD EDITION • Inclusion of new topics such as – Supercritical Technology for coal-fired thermal generation – National Power Tariff Policy of India – Global Environmental Awareness – International Emission Trading (IET) – Paris Conference details with National Electricity Policy (NEP) of India-13th plan – Advancement in Solar Photo-Voltaic System (SPS) with several case studies • Appendices with recent data on – Smart grid and grid system in India – Remote village electrification with renewable energy sources – Indian Electricity Act 2003, which supports the exploration of Renewable Energy. SALIENT FEATURES • Provides a balanced introduction to all aspects of solar energy conversion, including PV technology. • Gives comprehensive coverage of all facets of wind power development. • Explains small hydropower projects with illustrative figures. • Emphasises the importance of the availability of biofuel from the Jatropha plant. • Special attention is given to 'gas hydrates' and 'hydrogen energy' sources. • Fuel cells are explained as per the latest technology available. • Harnessing of ocean energy is dealt with in detail. • Utilisation of biomass and solid waste for energy recovery is emphasised. TARGET AUDIENCE • B.E/B.Tech (Electrical/Mechanical engineering