APOLLO G-300 series is high performance grid connected inverter or grid tie inverter which is designed, tested according to standards IEC 61727, IEC 62116, AS 4777 and AS 3100. With high efficiency microprocessor, it has capability to check electrical environment accurately in order to produce the highest energy to utility grid and stop generating energy when utility grid fails for preventing back-feeding electricity and hazardous situation to service personnel. This grid connected inverter suits for grid connected solar power system or solar grid tie system for residence house, building, store or factory.