Projects

Transpower regularly flies its transmission lines to survey for slips and/or assess conductor (wire) condition.

Transpower is investigating a new 110 kV transmission line between Cromwell and a new substation in the Arrow Junction area.

Sometimes Transpower needs to turn the power off to work on its equipment. Upcoming outages are listed here.

We are investigating potential electricity infrastructure upgrades in the Tararua and Wairarapa region, to resolve transmission constraints and enable connection of significant new renewable generation.

We have identified that two of the southern sections of conductor (wire) on the Huntly–Ōtāhuhu A line need replacing.

We have identified that 31km of conductor (wire) on the Flatbush to Hūnua section of the Ōtāhuhu–Whakamaru transmission lines in Auckland needs replacing.

Transpower is renewing the ageing electricity cables that cross Cook Strait at the end of the decade and will also increase the capacity of the HVDC link at the same time.

We're making investments to manage voltage stability in the Waikato and upper North Island regions.

Information about planning for increased electricity capacity in the Western Bay of Plenty

Transpower is working to improve the resilience of the Hawke’s Bay’s electricity supply by strengthening our Redclyffe substation. The substation was severely damaged during Cyclone Gabrielle in 2023.