This course summarizes Solar-thermal  energy,  solar  energy  collection  and  conversion  systems,  Stirling  cycle,  solar  towers/heliostats.  Photovoltaic  technology,  photovoltaic  cells,  wind  energy,  wind  turbine  design. Betz’s  theory, operating conditions of wind turbines, economics of  wind  energy, geothermal  and  ocean  current  energy,  biomass  and  waste  to  energy,  thermal,  chemical  and bio-chemical conversion process of biomass, syngas and liquid fuel production.