Scientific Approach to Renewable Energy through Solar Cells

The electricity requirement of the world including India is increasing at alarming rate and the power demand has been running ahead of supply. Generation of electrical power by cold based steam power plants or nuclear power plants causes pollution, which is likely to be more acute in future due to large generating capacity on one side and greater awareness of the people in this respect. The Magneto-hydro-dynamic (MHD) power generation is one of the examples of a new unique method of power generation. The other non-conventional methods of power generation may be such as solar cells, fuel cells, thermo electric generation, thermionic converter, solar power generation, wind power generation, geo-thermal energy generation, and tidal power generation. This paper elucidates about different energy sources, why we are going for non-conventional energy sources, different non-conventional energy sources and comparison between them.