The extent of the outage.

The extent of the outage.
Photo: Supplied

The Far North has been plunged into another massive power cut, with more than 23,000 homes and businesses without electricity.

The power went out just after 5.20pm with the outage covering the entire southern part of the district, including the Bay of Islands, Kaikohe, South Hokianga and Whangaroa.

According to Top Energy’s outage centre, the fault is on a sub-transmission feeder but the cause is not yet known.

Fire crews were called to help them enter the building.

FENZ initially sent two crews from Kaikohe and Ōkaihau.

There are no reports of fire and would be leaving the scene.

It’s exactly the same area that was affected by a huge outage last Friday, just six days ago.

In that case the cause was a tree falling on a 33-kilovolt line near Mount Pokaka, south of Kerikeri, but it was not clear why that caused the Kaikohe substation to shut down, cutting power to more than half the district.

The northern part of the district, including Doubtless Bay, Kaitaia, the Aupouri Peninsula and North Hokianga, still has power, in an apparent re-run of last week’s outage.

More to come…

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