I saw an interesting YouTube video shot in SA by tourist who was a power system engineer on vacation. It showed high voltage transmission line towers that had been stripped of supporting structure by scrap metal harvesters. As the videographer commented - one stiff wind and these are coming down.
You have nuclear power generators along the coasts that are managed with the help of foreign consultants. The staff include large doses of diversity hires who have no idea what they are doing. Thus you have increased the risk of accidents and system failures, and the transmission network has become far more precarious due to the perverse incentives in the economy.
My thoughts are that at some point in the not to distant future there will be genocidal threats to the whites who remain in SA. Then it will be a test of the United States and the original meaning and purpose of an asylum program. Something tells me if the crisis comes soon enough that Biden will invent a distinction to allow him to reject South African whites, while continuing to apply asylum in wide open form to those who arrive from Mexico by foot.