Off-grid Solar Systems are consist of off-grid inverter,solar panel module,combiner box,solar energy storage liithium batteries, PV cable etc, TAKUM commercial power systems are designed for high-power demand industrial and commerical building spot. Off-grid soalr system can convert solar energy into electricity that shares the same save and frequency as your grid power,and solar panels can last up to 25years, which can help you save a lot of money on electricity bill in the long run.