Amendments to correct minor TPM issues

We're seeking industry stakeholder feedback on our consultation paper - Amendments to correct issues in the new Transmission Pricing Methodology (TPM).

These amendments are technical and non-controversial in nature and we are interested in stakeholder and industry feedback on these amendments as part of our commitment to transparency and collaboration in our policy development.

We are looking to address the following ten issues:

1. Minor changes to the TPM (such as typographical errors).
2. Resolve a workability problem with the cap recovery charge calculation.
3. Clarify that Transpower can change the Benefit Based Charge (BBC) allocation method for post-2019 Benefit Based Investments (BBIs).
4. Apply the most appropriate benefit factors to calculate starting BBC allocations for new customers.
5. Allow Transpower more flexibility in the calculation of regional Net Private Benefit (NPB) under the price-quantity method for BBC allocation.
6. Change the treatment of non-asseted commissioned assets in calculation of BBC covered costs.
7. Ensure the most relevant information about the BBC simple method allocators is published.
8. Corrections to reduction event adjustment factor formula for the residual charge
9. Apply the BBC simple method to high-value transmission investments that change classification from interconnection to connection.
10. Clarify that assessment of prudent discounts requires consideration of settlement residual rebates.

You can read more in our consultation paper below.