Yes, SRNE specifies parallel expansion up to six units, so six 20kW inverters can provide 120kW of rated inverter capacity when configured. The difficult part is not simply multiplying the kW. A large ASP 16–20kW three phase off grid inverter system needs a battery bank capable of very high aggregate current, appropriately divided PV input, synchronized communications, large AC distribution equipment and coordinated protection. If that scale is anticipated, the initial project should be engineered for expansion from the beginning.
