Grid-connected PV generation system connects the power grid and transmits power to the grid, during which the solar components are employed to transform the received solar energy into DC energy, and then transmit to the grid the simple sinusoidal alternating current with the same frequency and phase as the grid voltage after conversion. We have achieved ISO9001, ISO14001, OHSAS18001, CE, German VDE, TUV, UL/C-UL, MCS,IEC61215/61730, CEC,CSA.