The 20 kW off-grid solar system from Sigenergy, comprising 3 inverter/battery stacks, operates as independent systems paralleled at the AC output. This configuration allows for easy expansion to virtually any size. With 18kW of inverter capacity providing up to 27kW surge for heavy starts, the system also supports up to 36kW of solar panels. A key feature is its resilience; if any inverter/battery stack fails, the remaining stacks continue supplying power without interruption, ensuring reliable energy flow.