Eskom warned on Thursday that stage 2 load shedding for the evening would continue into Friday morning, adding that it was likely stage 2 would continue through throughout that day.
The statement was shared by the power utility on Thursday evening through social networking site, Twitter.
The statement said the system remained heavily constrained and unpredictable, with breakdowns of 13 476 MW as at 18:00, necessitating the implementation of stage 2 load shedding overnight and into Friday morning.
"Our teams will be working flat-out tonight to return units to service. However, we anticipate that there will be a need for continued load shedding throughout the day tomorrow," the statement said.
The statement said Eskom would update the country on Friday morning on the success of its efforts in restoring capacity to the system.