Johannesburg - The electricity supply is expected to be constrained during the week, Eskom said on Monday.
"There is no scheduled load shedding at this stage, but the second half of the week is expected to be very tight," said spokesperson Andrew Etzinger.
Eskom's diesel generators were under pressure because of a lack of fuel.
"Diesel supplies are a concern due to volumes received not meeting our requirements. We are working with suppliers to unlock the constraints," said Etzinger.
On Sunday, Eskom declared a power emergency with large industrial customers. It also implemented rolling blackouts at the weekend.
Eskom said the power system had experienced an increase in demand as a result of weather conditions and increased load losses as a result of multiple tripping of generating units at the Majuba and Matimba power stations.
The power utility had lost a total of 1700MW of generating power, it said on Sunday.
Etzinger said the risk of blackouts on Monday and Tuesday was medium to low.
"This is owing to steady progress made in building reserves to limit the risk of load shedding next week," he said.
Power outages experienced
Fin24 user Pretorius Willem told Fin24 that there were outages on Monday in Klerksdorp, while another user said there were outages in Jouberton.
Eskom said this could be a localised electricity problem and if people experienced outages they should check with their local municipality as Eskom was not currently load shedding.
Click here to see a list of websites that could help you in better preparing yourself for outages.
- Sapa and Fin24.