It contains. 36 pieces of 300 watt monocrystalline silicon solar panels can generate 43.2 kilowatt hours of electricity per day. It can store 20.48 kilowatt hours of electricity. There are 4 lithium iron phosphate batteries with a specification of 51.2 volts and 100 ampere hours. There is also an 11kW integrated inverter and controller that converts the voltage to 220V, which is not a problem. Plus the supporting wires and brackets, the effect is really good and worth buying.