50KW/100kWh integrated IP54 off grid hybrid solar energy storage system uses lithium iron phosphate (LiFePO4) batteries, integrates hybrid inverters, MPPT controllers, generator interfaces, and BMS/PCS/EMS systems. It also has multi-level fire protection and air conditioning cooling functions, supports off grid, grid connected, and UPS modes, and can accommodate up to 5 units in parallel. The AC rated power is 50KW, the PV maximum power is 70KW, and the working temperature range is -10~55 ℃. It is suitable for commercial, farm, industrial and other scenarios.