A large-scale power outage over Pt Chevalier, Westmere and Ponsonby tonight was caused by a fault from excess water caused by the weather.
Vector estimated power would be back on to most houses around 2.30am and had brought in extra crews to assist with power restoration.
"The objective of our crews is to do this as quickly as possible while ensuring the safety of our crews and the public," a spokeswoman said.
"People can keep up to date with restoration work relevant to their specific address through the Vector Outage Centre, available on vector.co.nz/outages"
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The Auckland Music Theatre company was forced to cancel a performance following the power cut.
The 100 Years of Song concert, a showcase of a century of Auckland Music Theatre productions, was being staged at the Westpoint Performing Arts Centre.
In a post on Facebook, the company said health and safety for both audience and cast is paramount.
Refunds are available through iTicket.
Meanwhile, several well-known Aucklanders posted photos of fireplaces, rugs, wine and candle-lit dinners soon after 7.30pm.