It seems to be quite different in the UK where there are good incentives to have solar. I should be paying very little for my electricity over the year, even with charging up an EV. There used to be some grants for installation and I think the feed-in tariffs have been better, but it's still good. It ought to reduce the need for building more power stations.
SA has more sun than us and a lot of people lacking good infrastructure. The government ought to be encouraging more solar to improve matters. I get that the companies can have a lot of influence to prevent this.
They had a grant system here and they stopped it after 6 months so there is no incentive besides the obvious monthly savings. My electricity bill will be cut in half so I guess around the 100 GBP mark. The other morning the batteries took around 90 minutes to be fully charged and from 0 to 100% in such a short time frame was good to see. The government do not want private solar as they cannot benefit from you with regard to revenues as they count on you to pay for the rest who do not pay. This is the opposite of what should be happening.