Last updated: 30 Jun 2025
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Last updated: 09 Sep 2025
HVDC link upgrade programme - media resources
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: 20 Feb 2026
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: 27 Mar 2026
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: 08 Apr 2026