Johannesburg - Eskom said on Friday morning that it expects the power system to be constrained for the foreseeable future.
"The system is constrained, but stable today (Friday). We would like to thank customers for heeding our call to use electricity sparingly," said Eskom.
The forecast for the weekend and the coming week indicates that the system will remain extremely constrained.
Any extra load or faults in the system could make it necessary to go into load shedding.
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Eskom undertook to keep customers updated on the state of the electricity system.
It called on consumers to switch off geysers, air conditioners, pool pumps and all non-essential appliances throughout the day to reduce electricity demand.
"As workers leave office buildings in the evening we ask that they please switch off the lights, with the exception of security lighting and avoid leaving on air-conditioning overnight," Eskom said.
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"Commercial customers, particularly shopping centres and office blocks, can also make a big difference by switching off non-essential lights and not leaving office equipment such as photocopiers and computers in standby mode after hours."
Eskom customers can check load shedding schedules on the Eskom website or contact its customer call centre on 0860 037 566. Municipal customers are urged to contact their local authorities.
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