Stage 2 load shedding will be suspended at 05:00 on Tuesday, but energy supply is expected to remain constrained all week, with the possibility of further load shedding, Eskom said on Monday night.
The power utility implemented Stage 2 load shedding on Monday afternoon, after Unit 5 of Medupi Power Station tripped, taking some 700 MW capacity with it.
"Regretfully, Stage 2 load shedding has been implemented immediately. A full statement will be published in due course," said Eskom spokesperson Sikonathi Mantshantsha.
The announcement followed an earlier warning that load shedding may have to be implemented at short notice after a number of generating breakdowns.
Four generation units - at Matla, Kriel and Camden power stations – broke down earlier on Monday, while a generating unit each at Tutuka and Matla power stations have been delayed from returning to service.
The unplanned breakdowns had - before the Medupi unit tripped - removed 15 514 MW of capacity from the system, while almost 5 000 MW was out due to planned maintenance.