Projects

Transpower is investigating possible electricity infrastructure investments for the upper South Island, to ensure a reliable power supply for the future as the region grows and more homes and businesses switch their energy use to electricity.

Huapai has an existing switching station which will need to develop into a substation to provide Northland more resilience and be available for demand growth in North Auckland.

This project is about increasing the capacity of the 220 kV grid between Bunnythorpe and Whakamaru.

Transpower is replacing cable joints on an underground electricity cable in Auckland between our Brownhill and Pakūranga substations.

Transpower plans to replace the ageing electricity cables that cross Cook Strait at the end of the decade and is considering whether to also increase the capacity of the cables at the same time.

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

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.

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

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