Eskom will start with phase 1 load shedding on Thursday and later move to a higher level, he announced on Wednesday evening.
Eskom says in a statement that it will start at 09:00 on Thursday morning with phase 1 load shedding which will last until 14:00.
After that, he will move to phase 2 load shedding until 22:00.
He continues to attribute the need for load shedding to the colder weather across the country and says demand for electricity reached its highest levels yet this year on Wednesday.
The total demand for electricity on Wednesday afternoon was 33,000 megawatts (MW). Eskom is struggling to supply anything more than 31 000 MW out of its total generating capacity of about 47 000 MW.
Eskom says even though it has repaired a unit that shut down at the Tutuka power station, two units at Medupi and Kusile failed on Wednesday. This means that an enormous shortage of generating capacity has arisen.
Where Eskom uses its open-cycle gas turbines, or diesel generators, throughout the day to limit load shedding to phase 1, the demand for power becomes just too great during peak hours at night for the diesel generators to keep up. Diesel should rather be saved for the next day.
Eskom pleads with South Africans to consume less electricity despite the cold weather to help stabilize the power grid.