chapter 1 Energy resources and their utilisation -- chapter 2 Solar radiations -- chapter 3 Solar devices -- chapter 4 Solar thermal energy -- chapter 5 Solar photovoltaic systems -- chapter 6 Energy consuming and converting equipments -- chapter 7 Nanotechnology and solar power -- chapter 8 Wind energy -- chapter 9 Status of wind energy in India -- chapter 10 Hydroelectric power -- chapter 11 Small hydroelectric plants -- chapter 12 Hydropower development in India -- chapter 13 Tide, wave and ocean energy -- chapter 14 Geothermal power generation -- chapter 15 Geothermal energy resources and its potential in India -- chapter 16 Biofuels: A review -- chapter 17 Biogas -- chapter 18 Biomass gasification -- chapter 19 Cogeneration -- chapter 20 Photosynthesis -- chapter 21 Ethanol -- chapter 22 Biodiesel -- chapter 23 Biohydrogen -- chapter 24 Algae fuel for future -- chapter 25 Nanotech biofuels and fuel additives -- chapter 26 Issues relating to biofuels.