Stackable power inverter can be used in parallel as well as a single unit. The number of stackable power inverters in one paraller system can be composed freely in the range of 10 piece. At this way, the largest output power can be very larg after stacking. For example, if you use 10 units NE-2500P in paraller, the total output power can reach to 25,000W. This is the special technique of ours.