Last updated: 10 Mar 2026
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Last updated: 20 Feb 2026
Battery owner's guide to the TPM
This guide explains how the Transmission Pricing Methodology applies to grid‑connected batteries, outlining key charges and concepts to help battery owners understand pricing impacts and plan projects
Last updated: 23 Feb 2026
Directly connected load consumer's guide to the TPM
This guide explains how the Transmission Pricing Methodology applies to grid‑connected consumers outlining key charges and concepts to help battery owners understand pricing impacts.
Last updated: 10 Mar 2026
Electricity generator's guide to the TPM
Last updated: 04 Jun 2025
Settlement Residue Allocation Methodology
How Transpower allocates settlement residue to customers from the Clearing Manager (NZX) under Part 14 of the Electricity Industry Participation Code 2010
Last updated: 02 Apr 2026
Grid prices
Information on current and historical grid prices
Last updated: 10 Dec 2025
Industry updates
Each month we release an e-newsletter with the latest information from Transpower.
Last updated: 27 Jan 2026
About the TPM
The TPM determines how Transpower recovers the annual cost of running the national transmission grid from transmission customers
Last updated: 28 Nov 2023
Supplier Information
We work with suppliers from around New Zealand and abroad to supply goods, services, and works.
Last updated: 25 Nov 2025