Stage 2 loadshedding will continue to be implemented on Wednesday and Thursday at 16:00 to 00:00 and be reduced to Stage 1 on Friday, from 16:00 until 00:00, Eskom announced on Wednesday.
Eskom said this was due to the persistent shortage of generation capacity.
"To the extent possible, Eskom will endeavour to limit loadshedding to night-time to have minimal impact on the economy and population," it said in a statement.
Eskom said it would publish a further update on Friday afternoon, or as soon as any significant changes occur.
"Since Tuesday a generation unit each at Camden, Kriel, Kusile, Matla and Medupi power stations were returned to service. Two generating units at Majuba and one at Tutuka power stations were taken offline for repairs.
"We currently have 5 021MW on planned maintenance, while another 14 760MW of capacity is unavailable due to breakdowns," it said.