Thousands of Wearside homes were left without electricity after power cut.
Approximately 2,400 homes in Roker suffered a power cut earlier today after Northern Powergrid's mains tripped.
Engineers then re-routed the supply and power was restored at 2.08pm.
Investigations are now underway.
A spokesman said: "Approximately 2,400 homes were affected by a trip-out of the high voltage mains.
"Engineers then re-routed the supply."