ALMOST 10,000 Ipswich homes and businesses lost power on Monday, after a faulty piece of equipment on Energex's Ipswich South network caused the entire substation to trip.
Energex reported the unplanned outage at 11.20am on Monday via Twitter, but later adjusted the estimate of customers affected from 1251 to 9885.
Customers across the Ipswich City Council area, including in Amberley, Churchill, Deebing Heights, Eastern Heights, Flinders View, Goolman, One Mile, Purga, Raceview, Ripley and Yamanto, were affected. Traffic lights in these suburbs also went out.
Multiple Energex crews attended to investigate the outage and power was restored to all customers by noon, an Energex spokesman said.
Crews found the cause of the problem was a faulty piece of equipment connected to the network.
"There was a 33,000V piece of equipment that had a fault, and that fault on part of the network nearby caused the substation to trip," the spokesman said.
Energex received a lot of calls in relation to the large outage.
"We don't often get entire substations out; it's definitely rare," the spokesman said.
"A lot of customers were affected and we did take a considerable number of calls, but people who weren't at home may not have even noticed."
People affected by the outage turned to The QT - The Queensland Times Facebook page to vent frustrations and share updates.
"There was a bang and then it was gone in Raceview," one user reported.
"Hurry up I am cooking," another wrote.
Some users expressed anger at the outage, but most were happy with the speedy restoration of the network.
"Thanks to the Energex workers for restoring the power so quickly," another wrote.
The affected Ipswich South substation is located in Raceview.
The outage followed a reminder from Energex for households to conserve electricity.
Energex's last Peak Demand Report showed extreme levels of power usage in south-east Queensland.