Cape Town - Eskom will start with phase 2 load shedding at 11:00 on Friday morning until 22:00 on Friday night, spokesperson Andrew Etzinger told Fin24. This is because the electricity grid remains constrained.
Read: Tripped coal stations add to load shedding burden
Read: Stage 3 load shedding taking its toll
Update at 12:45: eThekwini Municipality has announced Stage 3 load shedding for its area, "which includes all of Durban with the exclusion of strategic national resources", it said on Twitter.
On Thursday Eskom announced that it had taken a decision to load shed over the weekend in order to build up reserves for the week ahead.
It blamed unforeseen technical problems at certain power stations, depleted water reserves and logistical issues relating to diesel supplies.
Fin24 reported earlier that the majority of South African CEOs are expecting a material effect on their bottom lines in 2015 due to the constrained power supply from Eskom, according to the latest Merchantec CEO Confidence Index.
READ: CEOs fear impact of Eskom power cuts
Etzinger referred the public to the Eskom website for load shedding schedules.