TPM proposal to the Electricity Authority

On 30 June 2021, we delivered a proposed new Transmission Pricing Methodology (TPM) for the Electricity Authority (Authority). This was in accordance with the Authority's new TPM Guidelines, published June 2020, and the Electricity Industry Participation Code 2010.

Below are links to each aspect of our TPM proposal:

  1. Letter from Transpower to the Authority TPM Full Proposal
  2. Proposed TPM (legal drafting)
  3. Proposed TPM 30 June 2021 compared TPM Preliminary Drafting 3 May 2021 [ docx 3.1 MB ]
  4. TPM Proposal Reasons Paper 30 June 2021
  5. Supporting Information for APP B Covered Costs Model [ xlsx 556.79 KB ]
  6. Supporting Information for APP B Indicative Pricing Model [ xlsx 1.46 MB ]
  7. Supporting Information for APP B Indicative Pricing Stakeholder Information [ xlsx 183.84 KB ]
  8. Supporting Information for APP B Simple BBI customer and regional allocations [ xlsx 362.74 KB ]
  9. Supporting Information for APP E and D CUWLP Data Processing Guide
  10. Supporting Information for APP E and D CUWLP allocation processing [ xlsx 324.14 KB ]
  11. Supporting Information for APP E and D WUNIVM individual customer allocations and indicative prices [ xlsx 41.52 KB ]
  12. Supporting Information for APP F TPM Adjustments and PDP Worked Example Spreadsheet [ xlsx 416.7 KB ]
  13. Assurance Chapman Tripp
  14. Assurance Deloitte
  15. Assurance Ernst Young
  16. Assurance KPMG

 

Part one refer back proposal - non-Benefit Based Charge (BBC) aspects

We received a letter from the Authority (28 July), where it referred non-BBC aspects of the TPM proposal back to us for further consideration. On 25 August we resubmitted on these:

  1. Refer back letter from Electricity Authority to Transpower (part one - non-BBC)
  2. Transpower letter to the Electricity Authority re non-BBC TPM proposal referral [ pdf 173.06 KB ]
  3. Part 1 resubmitted proposed TPM (clean) [ pdf 2.54 MB ]
  4. Part 1 resubmitted proposed TPM (changes tracked with comments) [ pdf 2.32 MB ]
  5. TPM proposal refer back part 1 response [ pdf 1.13 MB ]
  6. TPM proposal refer back part 1 assurance letter [ pdf 150.83 KB ]

 

Part two refer back proposal - Benefit Based Charge (BBC) aspects

We received a letter from the Authority (18 August), where it referred BBC aspects of the TPM proposal back to us for further consideration. On 15 September we resubmitted on these:

  1. Refer back letter from Electricity Authority to Transpower (part two - BBC) [ pdf 148.67 KB ] 
  2. Transpower letter to the Electricity Authority re BBC TPM proposal referral [ pdf 186.82 KB ]
  3. Part 2 resubmitted proposed TPM (clean) [ pdf 2.6 MB ]
  4. Part 2 resubmitted proposed TPM (changes tracked with comments) [ pdf 2.42 MB ]
  5. TPM proposal refer back part 2 response [ pdf 1020.39 KB ]
  6. TPM proposal refer back part 2 assurance letter Chapman Tripp [ pdf 152.21 KB ]
  7. TPM proposal refer back part 2 assurance letter Ernst Young [ pdf 115.69 KB ]
  8. TPM proposal refer back part 2 assurance letter KPMG [ pdf 156.48 KB ]
  9. Supporting Information for APP A to this response - clause 52 and 53 methods [ xlsx 1.52 MB ]

 

Next steps

The Authority may make further changes to our proposed TPM. Once satisfied it complies with the Code, it will consult on a full proposed TPM later in 2021. It aims for a new TPM to take effect for prices from 1 April 2023. You can view the Authority's TPM webpages here. Look out for the Authority's Market Brief for further information.