South Africans will face 13 hours of stage 1 rotational load shedding on Saturday between 09:00 and 22:00, according to Eskom.
Stage 1 load shedding allows for 1 000 megawatts to be shed from the national grid.
Load shedding over weekends is rarer than during the week due to a routine decrease in electricity use on Saturdays and Sundays, especially by industry.
On Friday evening the power utility had warned of a high chance of weekend power cuts. It said some generating units were not working due to planned maintenance, while a “higher than expected” number were offline because of technical faults.