Hi all, I have an ESS system (Quattro, 20kwh batteries, Solar PV) and am trying to understand Grid setpoint and the quite large instantaneous fluctuations around it.
e.g when set to 20W, i'm seeing a range of 150W draw from grid to 100W feed in to grid (presumably driven by the variations in load and PV generation). I don't understand why these variations are so large.
Ideally I would like my grid setpoint to be 0 with little variation. If i set up in 'off-grid' mode then there would, by definition, be no draw or feed in from the grid (with the same loads and PV generation) so it is possible.
Does running off grid introduce inefficiencies in the system that the grid setpoint addresses/helps address when connected to grid?