chimera:
Those posting solar usage graphs for November with large PV systems, I'd be curious to know how often your PV generation exceeded your load + your export to grid (I'm assuming) capped at 5kw. Eg: solar 9KWh, load 1kW, export 5kW. 3kW wasted at those points in time.
This is our system's performance on a high production day. 9.5kW of north facing panels into an 8.2kW single phase inverter. Consumption first thing is the Paladin HWC diverter, then a period throttled by export cap before the Evnex EVSE starts charging our Polestar2. A slight dip about 3:30 before the Leaf was plugged in to charge. On high input days it's a matter of scheduling consumption to avoid inverter throttling as this is the worst possible scenario as a total waste of potential generation though on the day of the data below it probably only amounts to 2kW average reduction for a couple of hours so 4kWh @ 17c FIT = 68c
Once our system got up and running in its present capacity it quickly became obvious to us that export lead devices that use only solar generation that would otherwise be exported are the key to maximising the economics of solar. Note the brief dip for the Evnex charging about 30 minutes in the charge. On a partly cloudy day those dips are filled by grid supply if the device isn't clever enough to throttle back consumption.
Bear in mind that the best strategy is to only consume enough to reduce export to 5kW or less. If you plug everything in to charge to gain total self consumption you will end up with everything charged before generation falls to 5Kw + background consumption and then be forced into inverter throttling due to your running out of things to charge.
Also our present grid excess voltage issues are restricting the inverter's output and export has been restricted to ~4kW which is frustrating.