Every household (and business for that matter) with Solar assisting Eskom (that Eskom is biting the hand that feeds), should turn off their solar system for a week or so and see how the Monopoly's state of affairs really is.... My guess is Diesel will get very expensive very quickly...
Grid-Tied system is an important point.
If it can't feed back into the grid then it can't be a "power plant" so then it is just a appliance, (think inverter trollies). So they can try as much as they want with their gorilla tactics, no merrit here.
However if you are grid tied (non-essentials...