Eskom has announced that stage 2 load-shedding might be implemented for the next three days, starting on Tuesday evening.
Residents should expect power cuts during the evening peak hours of the day, said Eskom spokesperson Sikhonathi Mantshantsha.
Mantshantsha said stage 2 load-shedding will be implemented due to a shortage of generation capacity.
"The power cuts will be from 16:00 until midnight for the next three days," he said.
"Should there be any further loss of generation capacity over the next three days, or should some units fail to return to service as anticipated, load-shedding may be implemented at short notice."
He added that the power utility currently has 2 986MW on planned maintenance, while 15 513MW of capacity is unavailable due to breakdowns.
Mantshantsha said load-shedding is implemented only as a last resort to protect the national grid.
He urged residents to use electricity sparingly, especially during evening peak hours.