Moneyweb has an interview with Eskom CFO. For me, the point made about the reasons for differences between retail and industrial tariffs is worth highlighting. This is another example of where common perception is off.
(Incidentally, Eskom tariffs are currently 68 cents for residential, 28 cents for big industrial)
From the moneyweb interview:
PAUL O’FLAHERTY: What is one of the myths of this industry is that the key industrial user does subsidise the residential user – that’s a fact. And the reason for it, even though it seems on the tariff that you quoted, that can’t be – it is true because the cost of delivering electricity to someone living out in the sticks is a lot more than delivering it to a transmission station right next to a mine, for example. So there’s a significant cost differential in actually getting electricity out there, and therefore the key industrial users do actually subsidise the residential users.