Upcoming Planned Outages
Last updated: 03 Oct 2025
Sometimes Transpower needs to turn the power off to work on its equipment. Upcoming outages are listed here.
Last updated: 03 Oct 2025
Sometimes Transpower needs to turn the power off to work on its equipment. Upcoming outages are listed here.
Last updated: 30 Sep 2025
We're making investments to manage voltage stability in the Waikato and Upper North Island regions.
Last updated: 29 Sep 2025
Transpower is replacing cable joints on an underground electricity cable in Auckland between our Brownhill and Pakūranga substations.
Last updated: 02 Oct 2025
This project is about increasing the capacity of the 220 kV grid between Bunnythorpe and Whakamaru.
Last updated: 22 Sep 2025
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.
Last updated: 09 Sep 2025
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.
Last updated: 27 Aug 2025
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.
Last updated: 13 Aug 2025
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.
Last updated: 27 Aug 2025
We have identified that 31km of conductor (wire) on the Flatbush to Hūnua section of the Ōtāhuhu–Whakamaru transmission lines in Auckland needs replacing.
Last updated: 27 Jun 2025
This Transpower project provides information on the transition from a two block load shedding scheme to a four block load shedding scheme. The four block scheme is planned to be operational by 2025.
Last updated: 19 Jun 2025
Information about planning for increased electricity capacity in the western Bay of Plenty
Last updated: 22 Apr 2025
Transpower regularly flies its transmission lines to survey for slips and/or assess conductor (wire) condition.