Transpower to spend $1.1b on Cook Strait link upgrade

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Tue, 09 Sep 2025

Transpower plans to spend $1.1 billion on upgrading the electricity link between the North and South Islands.The state-owned power grid operator said it had applied to the Commerce Commission for approval to invest in the High Voltage Direct Current (HVDC) link.The proposal included the replacement of three submarine electricity cables, the addition of a fourth cable to boost electricity transfer capacity, and new cable termination stations on either side of the Cook Strait.An application for additional related work expected to be carried out a...

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