Eskom’s online prepaid electricity vending system will be shut down from 8pm on Thursday, it said.
“Our vending system has been very slow and even offline for the last couple of days,” said Eskom spokeswoman Hillary Joffe.
“We are taking down the system from 8pm to look at it overnight.”
Eskom was doing this so that it could identify the root cause of the problem and fix it.
Joffe said the vending system would be switched on again on Friday morning.
“We are taking this very seriously and Eskom’s top management is looking at the problem. We regret the inconvenience and apologise to our customers.”
Eskom was looking at creating a system that was more stable, said Joffe.