JOHANNESBURG - President Cyril Ramaphosa said the prospect of more power cuts by Eskom was "most worrying".
"That comes as quite a shock. It is reported that there are six units that are down, that is most worrying, most disturbing," Ramaphosa said at the 32nd Ordinary Session of the Assembly of Heads of State and Government of the African Union.
He will get a report when he returns from the summit.
The power utility unexpectedly announced an unprecedented stage of load-shedding on Monday after six additional generating units went offline.
Ramaphosa announced a plan last week to split Eskom into three separate entities in an effort to make it more efficient.
Eskom says contractors are partly to blame for the poor performance of Medupi and Kusile power stations.
The power utility implemented Stage 4 load-shedding from 1pm to 10pm on Monday.
Eskom says customers can expect power outages until April.
- Additional reporting Reuters