Off-grid PV generation system is a type of independent solar generation system (e.g. remote countryside power system, solar energy system, communication signal power, cathodic protection and solar street lighting) supported by accumulator. The biggest difference between above two systems is that off-grid solar generation system comprises an energy storage device. We have achieved ISO9001, ISO14001, OHSAS18001, CE, German VDE, TUV, UL/C-UL, MCS, IEC61215/61730, CEC, CSA.