Yup. I stayed with a friend for a few days in a suburb nearish Johannesburg. His entire neighborhood was pretty much all off grid. We only noticed the (daily) power outages by the street lights going out.
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My view from my bedroom for $150 rent per month including food!
In some sense joburg is a libertarian paradise. No one expects anything from the government, and people have taken many practical measures for self sufficiency and security.
It's also really cheap, beautiful forrested suburbs, good restaurants, and many places accept Bitcoin e.g. Pick n Pay, one of the largest supermarket chains.