This ‘Textbook of Renewable Energy’ summarises various aspects of renewable energy and is divided into 16 chapters. This edition discusses renewable energy, solar radiation and its measurement, solar thermal energy conversion system, solar photovoltaic systems, biogas, biomass, biofuels, wind energy, fuel cells, tidal energy, hydrogen energy, geothermal energy, ocean thermal energy conversion, renewable energy applications in developing smart cities, environmental aspects of electrical energy generation. A unique feature of the book is chapter on magneto hydro dynamic power generation.