Contents: Preface. 1. Characterization and quantification of Gas-hydrates - future sources of energy in India/Kalachand Sain. 2. Geothermal energy/Sukanta Roy and Prafulla B. Sarolkar. 3 . Ocean energy/M. Ravindran and G A Ramadass. 4. Solar Energy/Juzer Vasi. 5. Coalbed Methane (CBM) and Underground Coal Gasification (UCG) in the evolving energy landscape of India/Amalendu Sinha and Debadutta Mohanty. 6. The emerging energy shale gas resources: an Indian prospective/Veluri Keshav Rao. 7. Hydrogen production technologies/Shikha Wadhwa and Devesh Kumar Avasthi. 8. Bioenergy generation: processes and technologies/Anjan Ray, Ojasvi, Sudhakara Reddy Yenumala and Sunil Kumar.