Last updated: 09 Sep 2025
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Last updated: 21 Jul 2025
HVDC cable replacement and enhancement August 2024 consultation
In August 2024 Transpower published an Information and Consultation paper about upgrading and enhancing the capacity of the submarine cables.
Last updated: 23 Oct 2025
Quarterly Security of Supply Outlook
Last updated: 04 Jun 2025
TPM development archive
Information relating to the development of, and transition to, the TPM
Last updated: 21 Aug 2025
Grid Pricing
The way Transpower recovers its revenue from its customers is set out in the Electricity Authority's Transmission Pricing Methodology (TPM)
Last updated: 02 Dec 2025
Previous Market Operations Weekly Reports/ Weekly Insights
Last updated: 27 Aug 2025
Further consultation on our short-list for upper South Island upgrades
09 Apr 2025
News from Transpower - April 2025
