Solar energy is a renewable and green energy. Solar energy can be used in places that are not connected to power or it is hard to connect them. Power is produced by photovoltaic cells in panels with temperature of 60 to 95 °C. It is also possible to use a battery to store power in day and use it in night. Photovoltaic panels can be used in solar farms to produce power in appropriate environments (long days with high level of solar energy).