About the TPM

On 12 April 2022, the Electricity Authority (Authority) announced its decision to adopt a new Transmission Pricing Methodology (TPM). Transpower is now working to implement the new TPM into prices that will take effect from 1 April 2023. The Authority's decision paper and the new TPM are available on the Authority's website

The TPM determines how Transpower recovers the annual cost of running the national transmission grid from transmission customers.

 

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Old v New TPM

Useful information

Document Download
Guide to the TPM v2 (NEW) View
Overview of the TPM View
Transitioning to a new TPM View
Information sheet on prudent discounts (NEW) View
Information sheet on connection charges under the new TPM v2 (NEW) View
Information sheet on connection charges: FAC mechanism to address Type 1 FMD v2 (NEW) View
Information sheet on connection charges: Anticipatory investment and Type 2 FMD v2 (NEW) View
Information sheet on residual charges v3 (NEW) View
Information sheet on benefit-based charges: Simple method v2 View
Information sheet on benefit-based charges: Standard method View
Information sheet on benefit-based charges: Appendix A BBI View
Information sheet on benefit-based charges: Adjustments v2 (NEW) View
Information sheet on benefit-based charges: Covered cost View
Information sheet on transitional price cap View

 

To help people understand the new TPM we have prepared the above resources. Over time, and as we work to implement the new TPM into prices, we intend to develop and share more information about how it will work in practice.

You can find our updated consultation schedule on our TPM current consultations page. All decision documents, consultation documents, submissions and cross-submissions for past consultation are on our TPM decisions page. 

View our Grid Pricing page for 2023/24 customer pricing (total charges per customer). Prior indicative pricing updates are here.

 

Questions?

Please email [email protected] if you have any questions about the implementation of the new TPM. 

 

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