Due to generation capacity constraints, stage 2 load shedding will be implemented from 9pm on Saturday until 5am on Monday morning.
Eskom said in a statement that should there be any further deterioration in the power system, load shedding might be required to be implemented earlier.
This load shedding is due to a failure of a generation unit each at Kusile, Medupi and Arnot power stations, as well as a delay of a unit returning to service at Tutuka power station.
The power utility added that in addition to the above, the failure of the coal conveyors at Medupi led to reduced output at the station.
While this has since been rectified, it will take some time to recover the full operations. Furthermore, there was a complete shutdown of the Kendal power station ash plant due to an electrical fault. This required the station’s output to be reduced to a minimum.
The ash plant has since returned to service, and the ash backlog recovery is in progress.
“These constraints, together with higher demand yesterday and today, have resulted in extensive usage of emergency generation reserves, which will have to be sufficiently recovered for the week ahead. Total breakdowns have increased to 14 727MW while planned maintenance is 6 711MW of capacity as we continue with the reliability maintenance.”
Eskom has appealed to all South Africans to help reduce the usage of electricity by switching off non-essential items in order to help it through these constraints.