In CoCT they use the latest aerial photos, no, not Google, to see where building alterations happened with no plans, and where there are solar panels installed, and whether that install has been registered, same as i.e. building alterations.
SANS and NRS regulations are national aka South African regulations, that apply to all of us already, and sparkies are supposed to have the latest regulation book, it is all in there I’m told.
Whether the Munic enforces the regulations, that is a whole new discussion.
Ito Eskom connected homes, I’m not aware that they allow home-users to connect yet as they said a few years back, that they don’t have the “manpower” - WTF - to handle the registrations and all that, as CoCT is already doing but ONLY for connectiosn to their grid, not Eskom’s.