I'm really happy with my 2 year old I-Pace that came with 1500km on the clock with every option under the sun for less than 50% retail. As far as I care its a fantastic car at a great price. For 300Kw of power I'd be paying 50% more for an ICE car and I wouldn't be able to fuel it for free...
Worse than that if you have a modern meter you paying the municipality to give your neighbours free electricity as the charge in both directions.
If you have one of those old spinning disk meters you may be able to run it backwards but don't get caught.
For my system I used an external meter...
It will target a voltage for charging but use the SOC as a target for discharge, the bit difference between Axpert type and Victron/ Sunsynk. The SOC target discharge is a huge tool in SA with load shedding.
Arn't all complex systems a collection os simple concepts working in concert. Yes...