The increasing demand of electric power and shortage of present energy resources lead today engineers and scientists to think about the alternative sources of energy, the sunlight is a potential sources for generating electric power. In recent years, it is increasingly used to generated power .The use of solar energy is attractive for solar home system application also. Solar home systems are quite needing no fuel and require very little maintenance. Other advantage of a PV system are free energy, reliable power, flexibility and quick installation. Author discussed Solar Photo-voltaic based Renewable energy system in Bangladesh. Finally, author try to analyze solar home system per unit cost. The government institute is "Infrastructure development companylimited"(IDCOL) established from 2003 to 2013 solar home system 20lakh and produce100 MW electricity. We know that 70% people lived in rural area. So, this project is not sufficient for development in rural area. Sun is the source of all energy available in the world. The initial cost of the solar energy would be much higher but the experts believe that it would be a cost effective alternative to other source of energy. So, we can take initiative to increase solar energy in our house hold system and able to find an alternate way of renewable energy.