This inverter is a new technology product. It has two MPPT inputs, one is for wind turbine, and the other is for solar panel. A battery bank can be connected on the inverter to store the energy produced by the energy source (wind and solar). The energy will be stored in the battery firstly, then power the load. Extra energy will be transmited to the state grid.
If there is no wind in cloudy days, the inverter will converter the energy from battery bank for powering the backup equipments.