This Lithium battery based Energy Storage System (ESS) is a replacement of conventional Diesel Generating Set. This can be charged with Grid power as well as Solar panels. It also has grid export feature that enables it to export excess power generated from solar panels to grid. This system can power load up to 18 kW. It can be connected to 18kW of solar panels. The system has 50kWH of battery bank. This should give you a backup of approximately 5 hours at 10kW of the load in absence of both solar and grid power. In case the sunlight is available, (and grid is not available), the system would try to power load entirely from solar power and would touch battery only when solar power is not enough. In case there is some residual power available even after powering all load and charging the batteries, the same would be exported to the grid thereby saving on the power bills.