Hyarion

I've bought a house recently which has an Axpert inverter, solar panels and batteries. I've programmed one of my raspberry pi's to monitor the stats on the inverter and have been watching the graphs with interest. So obviously there are times where the inverter decides to stay on Eskom or switch back to Eskom (e.g. morning sun rising, clouds, sun setting). What I'm curious about is whether it's possible to calculate how much power the panels could be outputting when it's running off Eskom. To give an example: Between 12:00 and 13:00 the PV Voltage was around 114V, PV Current was 24A and everything was running off Solar. Approx. 1.2kW load. At 13:00 the inverter switched back to Eskom and continued to 14:00. PV Voltage was around 136V, current was 1A. Approx. 1.2kW load During that time period of 13:00-14:00, is there a way I could calculate how much the panels could have produced? Or worded another way, could I calculate what load would have been supported?