The generated electricity will be fed into the grid, and the grid is used as an energy storage device. When the electricity load is large and the solar power is insufficient, electricity is purchased from the national grid. When the load is small or the electricity cannot be used up, the excess electricity will be sold to the national grid.

On grid photovoltaic systems have a connection to the public electricity grid via a suitable inverter, the direct current output by the solar array is transformed into alternating current of the same amplitude, same frequency and same phase with the power grid voltage, and realizes the connection with the power grid and the transmission of electric energy to the power grid.

On Grid Solar Panel

Residential PV generation is a model of using PV power stations as consumer goods, residents buy them at home and install them on the roofs for "spontaneous use, and surplus electricity is connected to the Internet". Photovoltaic power plants can be connected to the grid, and the excess electricity is sold to the national grid, and then used by residents themselves. Industrial and commercial PV power generation refers to suitable installation in enterprises, institutions, schools, hospitals, commercial buildings, office buildings, hotels, shopping malls, industrial plants, and other large-scale electricity consumers. The distributed grid-connected system can be consumed locally, offsetting part of the electricity consumption of online purchases and saving energy. The user's electricity bill, or the full Internet access, is exchanged for income.