GoodWe SBP series AC-coupled battery storage retrofit solution is suitable for both single-phase and three-phase systems. During the day, the PV system generates electricity which will be provided to the loads initially. Then, the excess energy will charge the battery via the SBP energy storage inverter. Finally, the stored electricity can be released when the loads require it. The battery can also be charged by the grid to ensure uninterrupted supply in the event of a power cut.