The regulatory problems you'll get aren't necessarily with generating your own power. The government might object to your buying a Toshiba mini-nuclear power station, which will cost R21 million and provide 200kVA for 40 years without refuelling or producing waste, but it won't object to solar, diesel or other power, subject to building code restrictions for things like windmills.

The real problem comes when you want to sell power to your neighbours or your block of flats or your cluster complex. Though co-generation deals could be struck between large industrial producers of power and Eskom, I doubt they're going to let small-scale operators into the market, even if they remain entirely off-grid.

I don't know the details of the laws on this subject, though. I guess they're suddenly well worth investigating.