The power system will be severely strapped on Monday evening, with the ability to lighten the load at short notice in the event of unit failure, Eskom warned on Monday.
On Saturday, the load shedding was suspended and the electricity system recovered sufficiently to meet demand during the day.
“(But) Eskom would like to warn the public that short notice load shedding may be required during evening peaks in the event of further disruption to currently available capacity,” the utility said.
Eskom plans to return to serving one generation unit each at the Kusile and Kendal power plants before Monday evening.
“If one of these units did not return as expected, the power system would be severely constrained, presenting a greater likelihood of load shedding at short notice.”
The return to service of one generation unit each in Matimba and Lethabo, as well as two units each in Hendrina and three at the Tutuka plants were delayed, increasing constraints in the evening.
“The beginning of winter saw an increase in demand and this will lead to a captive system, particularly during the morning and evening peaks, throughout the winter.”
Eskom urged South Africans to use electricity sparingly, particularly from 05:00 to 09:00 in the morning and from 16:00 to 22:00 in the evening.
Approximately 3 049 MW of Eskom’s capacity is offline due to scheduled maintenance, while a further 14 985 MW of capacity is unavailable due to failures.