Transmission Pricing Methodology (TPM)

Information related to how the Transmission Pricing Methodology (TPM) is developed.

TPM development information

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Information about our current development work.

Subscribe for regular updates as we progress our work on the TPM, and read past updates.
We're here to answer your questions throughout the development of our proposed TPM. Feel free to send questions to or read our existing answers here.

Past TPM development information

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Information related to past TPM reviews and submissions is below. See our Regulatory Submissions page for information on Transpower's responses to other entities' consultations, proposals and papers.

We commissioned Sapere Research Group to research and consider practical design aspects of an LRMC charge for New Zealand’s Transmission Pricing Methodology.
We recently asked for and received feedback on a consultation paper as part of a proposed operational review of the Transmission Pricing Methodology.
This page contains the submissions made in response to our two consultations as part of our TPM operational review.