Energy is important in part of life and life cannot imaging without electricity. Due to environmental pollution, traditional thermal energy such as coal, oil power stations are planned to be reduced. Considering the demand, lot of research is started on renewable energy for commercial as well home applications. When it comes to renewable energy, solar energy is easier to harvest when compared to renewable energy. In this study, a different source of energy is studied and depth study related to solar energy. It is discussed how the energy is created from the source, SUN. Method of harvesting solar energy and different kind of solar panels are discussed. There is also a comparison for each panel and special features of each kind of panel are discussed.