Cape Town - Eskom will implement stage 2 load shedding from 08:00 on Sunday morning, which is likely to continue until 22:00 this evening.
Load shedding planner: GridWatch
"This is due to increased electricity demand as a result of the cold front that is currently sweeping through parts of the country as well as a shortage of generation capacity resulting from technical faults at some of our power station units," Eskom said in a statement.
"We will also be using the day to build up our reserves in order to prepare for the week ahead."
Eskom urged electricity users to consider energy efficient ways of keeping warm during the cold winter weather.
Any unexpected changes on the vulnerable and constrained power system could lead to a change in the load shedding stage at short notice, the company said.