Based on presentations at a national seminar on power generation from renewable energy sources, the volume presents papers that focus on the need of renewable and alternative energy sources for clean fuel technologies and their role in power generation. A systematic presentation presenting the latest data and discussion of recent technologies including latest advancement in solar photovoltaic cell technology and recent developments in biomass energy technology, the papers delve into prospects of use of solar energy and its status and potential in Gujarat and Rajasthan. It probes the concept of green energy, wind power development and recent challenges in this context, wind energy conversion systems and energy storage options for them. With reference to specific areas like milk processing, it deals with utilisation of agricultural wastes and pine needles for fuel production especially biogas. It also focuses on energy conservation in agricultural and manufacturing industries through renewable energy.