Solar on-grid power system consists of solar panels, a system controller and inverter. Solar panel will produce DC(Direct Current) electricity, and this electricity will be run though the converter and inverter to produce AC(Alternating Current) electricity. Then this energy is run into AC power panel back to the utility companies power grid. As on-grid solar power system enjoys the advantages of battery-free and low cost, which can make the system operation life longer. It also can remote monitoring during the operating. It has been become the main stream in solar power generation. The system brings benefits of pollution reduction, energy conservation and environment protection, all of which make remarkable social values.