A grid-connected PV (photovoltaic power) system is an electric power system connected to the utility grid, which generates electricity by using solar power. It consists of solar panels, grid connection devices, and power controlling units along with DC-DC converter and inverters. The system arrangement ranges from commercial and industrial rooftop systems to small residential units to large utility-scale solar power energy stations. A grid-connected PV system installed at residential are connected to home appliances, meters, and the grid PV system has large potential to provide energy with minimal impact on the environment, as it is clean and pollution free. Grid connected PV systems across the globe account for about 99% of the installed capacity when compared to stand-alone systems that use batteries.