Essential Energy says a power outage on Saturday December 2 was caused by a fault at the Rocks Ferry Zone substation.
The unplanned outage affected some 7600 customers across Kempsey, Crescent Head and west of the donut.
A spokesperson said the outage started at 5.45pm when safety equipment, on the high voltage network, detected a fault, automatically turning power off until the line could be patrolled for hazards.
“Crews patrolled the line while a second crew re-routed power around the network to get it back on for customers,” the spokesperson said.
“Power was restored to customers just before 7pm.
“Investigations of the line showed a fault near the Rocks Ferry Zone Substation at Wauchope which has since been repaired.”