Eskom is implementing Stage 2 load-shedding from 12:00 pm Thursday, 23:00 pm Sunday night.
The utility says due to unforeseen breakdowns, two-generation units at the Kusile Power Station and a unit each at the Kriel and Duvha stations tripped.
Eskom has urged the public to reduce electricity consumption to help minimize load-shedding.
Eskom to implement Stage 2 loadshedding from 12:00 today until 23:00 on Sunday pic.twitter.com/YV8ilj5o9r
— Eskom Hld SOC Ltd (@Eskom_SA) January 14, 2021