Power has been restored after 1800 Auckland homes in Takanini and Papakura experienced an outage.
Network provider Vector reported an unplanned outage in the two Auckland suburbs around 3pm.
A spokesman for the company said about 1800 houses were without power.
The outage was not caused by a car crash, but the spokesman could not confirm the cause of the outage.
There was no power to the ASB Takanini branch and the bank would close early and restore usual trading hours of 10am to 6pm on Thursday, a ASB spokeswoman said.