Johannesburg - Eskom has asked large industrial customers to reduce their electricity usage by 10 percent as it seeks to avert a second evening of rolling blackouts.
“Eskom declares an emergency as the power system remains severely constrained,” Eskom said in an e-mailed statement today.
“Any extra load or faults in the system are likely to result in load-shedding.”
Eskom last night started rolling power cuts for the second time this year as generators at two plants failed.
The utility has struggled to satisfy demand for power in South Africa in the past decade, with a lack of working generating capacity forcing Eskom to schedule blackouts for the first time in six years in March to prevent the collapse of the grid.