August 22, 20206 yr What criteria is used by the inverter decide on how much power to draw from the grid and how much from the battery
August 22, 20206 yr 33 minutes ago, Tariq said: What criteria is used by the inverter decide on how much power to draw from the grid and how much from the battery The inverter size. Your inverter is a 3kva/2400watt. In this case your load seems to be a resistive load, so the 3000va will apply. It will take from the panels what it can and add from the batteries to make up the 3000va (Rating of inverter) - losses. The balance then has to come from the grid. 3289 (Load) -2267 (PV Production) -445 (Battery) -837 (Grid) = -260Watt (conversion losses). If you had a 5kva unit, everything in this case would have come from panels and battery, nothing from the grid..
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