About the TPM
Information on the TPM and sign up for updates
Transmission Pricing Methodology
TPM benefit-based investment allocations
This page includes our benefit-based charge (BBC) Assumptions Book and relevant benefit-based investment (BBI) decision documents and related consultation materials
TPM decisions
All (non BBI) decision documents and related closed consultation papers, submissions and cross-submissions.
TPM current consultations
Current consultations and our schedule for TPM consultations
TPM updates
Updates related to our work administering the TPM
TPM Q&As
We answer a series of questions sent to us by stakeholders related to implementing the new TPM.
TPM proposal to the Electricity Authority
In mid-2020 the Electricity Authority published new transmission pricing methodology (TPM) Guidelines and tasked Transpower with developing a proposed new TPM
TPM development process
We worked within a tight timeframe to develop a proposed new transmission pricing methodology for the Electricity Authority
TPM development engagement
We engaged with stakeholders, including through formal consultations, during the development phase of the new TPM