It gets worse.
Lets say they build the extra power stations to meet this imaginary demand.
The increase in demand for coal will push up the price of coal, which will of course make the 45% increases once again insubstantial.
Also, the costs of transferring the coal to the powerplants will increase as the BEE factor kicks in.
The BEE factor is where competition is eliminated because of government BEE regulation. The BEE companies collude, and buy startup BEE companies out on a daily basis.
Eskom has already made a BEE deal worth R10 billion to repair a small stretch of road they they have completely destroyed by transporting coal on it. Of course, Eskom has destroyed other roads, but, have for some reason chosen to pay for the repair of this specific road because of a "working relationship" between Eskom and a road construction company.
If we give them the money, they will waste it, enrich themselves and hold us hostage.