“Eskom will implement Stage 2 load shedding from 8am on Saturday 21 February 2015, this is likely to continue until 10pm in the evening,” the power utility tweeted on Friday.
“Eskom understands the impact this will have on the retail industry in particular and on South Africa in general.”
Earlier, Eskom announced there was a medium to high risk of blackouts on Friday.
“There is a medium to high risk of load shedding today,” it said.
“Any unexpected changes on the already constrained power system may necessitate the need to load shed.”