The power supplier said in a statement on Twitter that stage load shedding will resume at 7:00 on Sunday.
The Koeberg Unit 1 has been safely synchronized onto the grid, which has helped increase generation capacity and ease the scale of load shedding.
Unplanned breakdowns or outages were at 11041MW at 16:50 this afternoon and planned maintenance outages are at 5547MW the power supplier said in the statement.
Eskom reminded consumers to use electricity sparingly.