South African state power utility Eskom said it was extending scheduled power cuts until Saturday because of a shortage of generation capacity.
It had warned on Sunday of power cuts planned for the nights of Monday and Tuesday.
“While Eskom teams have successfully returned a unit each at the Kusile, Matimba and Arnot power stations during the early hours of this morning, further delays in returning other units to service have exacerbated the capacity constraints,” the company said in Tuesday’s statement.
In a statement, Eskom said it would cut up to 2,000 megawatts from the national grid in what it calls “Stage 2 load shedding”, from 9 a.m. on Tuesday until 5 a.m. local time on Saturday.
The state utility in a briefing on the state of the power system said Africa’s most industrialised nation needs an extra 4,000 to 6,000 megawatts (MW) of generation capacity to eliminate the risk of scheduled power cuts and ensure system stability.
“This will ensure the space for generation to continue with the planned reliability maintenance and refurbishment programme” it added.
Eskom regularly enforces outages over faults at its coal-fired power stations supplies over 90% of the electricity in South Africa regularly implements outages because of faults at its coal-fired power stations that hold back economic growth.
As of March, Eskom had nominal generation capacity of around 46,000 MW.