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Transpower Issues Grid Emergency Amid G4 Geomagnetic Storm

11/13/2025

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Summary

Story summary

Transpower New Zealand (the national grid operator) issued a grid emergency on November 12 due to a G4-class geomagnetic storm over the South Island.
The company removed transmission lines as a precaution to protect critical electrical infrastructure.
The action does not affect consumer electricity supply.
Transpower monitors space weather and may switch off parts of the grid during severe storms to minimize risks.
Further updates will follow.

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Story summary

Transpower New Zealand (the national grid operator) issued a grid emergency on November 12 due to a G4-class geomagnetic storm over the South Island.
The company removed transmission lines as a precaution to protect critical electrical infrastructure.
The action does not affect consumer electricity supply.
Transpower monitors space weather and may switch off parts of the grid during severe storms to minimize risks.
Further updates will follow.