The GOODWE EM inverters are hybrid solar inverters. They make the use of the conventional electrical network possible interacting with batteries, so they allow a self-consumption, grid zero installation. The GW5000EM allows upto 6,5kW of solar panels to be attached.
During the day the batteries accumulate the surplus energy that isn't used and is produced by the solar panels. This energy is available at the time of day when there is no solar production and can eliminate most of the electricity bill.