This would see household electricity prices rising from 60c per kilowatt hour to 112c.
Household electricity is in the region of R1.21/kWh.
Hence it's likely to increase to R2.42/kWh.
As a comparison the average cost of household electricity (what the consumer pays, not metro),
in the USA is $0.125c = R1.08 (R8.67=$1)
Average Residential in Wyoming USA is USD0.097178/kWh => ZAR0.84/kWh
That's the end user cost including network fees, connection fees, etc.
(A bit of googling will get you the details)
In 2011/2012, CoJ/CityPower payed 47.7c/kWh and charged end users R1.22kWh.
There was a time when ZA has the cheapest electricity, but that's not longer the case.
With the new rates, ZA will have the highest cost in the world - despite having an abundance of coal.