The GoodWe ES series is a bi-directional energy storage inverter that is compatible with both on-grid and off-grid PV systems. It intelligently controls the flow of energy such that during the day, solar energy can power loads, feed into the grid, or charge batteries, and stored energy can power loads at night. Additionally, the grid can charge storage devices via the inverter. It has a fanless, low-noise and IP65 dust/waterproof design capable of operating at 45°C and integrates charging/inverting functions with battery management.