Eskom said on Monday that their power grid was under pressure again.
They said in a statement posted on Twitter that although they do not expect load shedding, the network will be “severely” under pressure until Thursday.
The power supply says some of its units “failed” over the weekend and this is the reason for the renewed pressure.
Unplanned units are currently exceeding the critical level of 9,500 MW and thus necessitate the “extensive use” of emergency resources such as water and diesel.
Eskom asks people to use electricity sparingly.
The warning follows shortly after the five days of load shedding that plagued the country in October. Then five of their units broke.