An Aurora Energy spokeswoman said it experienced a low voltage cable fault on Sunday night.
Crews from fellow Dunedin City Council-owned company Delta responded that day and brought in four generators to supply power to all affected customers while the fault was located, she said.
The fault had been located and repairs were expected to be finished in time for normal power to be restored by this morning.
''Affected customers will experience a brief interruption while crews switch the power supply from the generators to the cable,'' the spokeswoman said.
The work and the fault was not associated with Aurora's fast-track pole programme.
Owner of St Andrew St business The Cloakroom, Shelley Ormandy, said contractors working on the street was a little frustrating as it affected parking outside her store and foot traffic.
However, she was not angry at Aurora and was happy with how quickly it had brought in generators and the way it was dealing with the fault.
There had been no power interruption for her as she was not open on Sunday. By the time she got in on Monday morning the generators were operating.
She had spoken to shop owners nearby, who were also largely happy with how Aurora had dealt with the situation.
