On 13 February 2026, Transgrid applied to the AER to revoke and substitute its electricity transmission revenue determination for the 2023–28 regulatory control period, to adjust total forecast capital expenditure (capex) approved for Project EnergyConnect (PEC) in our April 2023 final decision

We invite energy consumers and other interested parties to make submissions on Transgrid’s reopener application by Tuesday, 28 April 2026. 

Application

Transgrid has submitted the following materials in support of its reopener application.

Project EnergyConnect - An application to reopen the 2023-2028 Revenue Determination - Transgrid - 20260213

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Transgrid
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Project EnergyConnect confidentiality claims register - Transgrid - 20260320

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Transgrid
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Attachment 1 - Stakeholder engagement - Transgrid - 20260213

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Transgrid
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Attachment 2 - Project EnergyConnect and Contract Failure - Transgrid - 20260213

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Transgrid
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Attachment 3 - Rectification actions and options report - Transgrid - 20260213

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Transgrid
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Attachment 4 - New arrangements to deliver PEC - Transgrid - 20260213

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Transgrid
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Attachment 5 - Governance arrangements - Transgrid - 20260213

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Transgrid
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Attachment 6 - Rules Pre-conditions - Transgrid - 20260213

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Transgrid
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Attachment 7 - Reopener capex methodology - Transgrid - 20260213

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Transgrid
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Appendix 2a - Letter of support - Elecnor Australia - 20251113

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Transgrid
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Appendix 2b - Cost Estimation Reports - Fission - 20230814 and 20230817

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Transgrid
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Appendix 3a - Net market benefits assessment - Transgrid - 20250304

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Transgrid
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Appendix 3b - Net market benefits NPV model (forward looking) - Transgrid - 20250328

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Transgrid
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Appendix 3c - Net market benefits NPV model (total)- Transgrid - 20250328

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Transgrid
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Appendix 3d - Gross market benefits assessment - EY - 20250224

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Transgrid
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Supplementary Information 3di - Statement of Facts - Market benefits assessment and loop flows - GHD - 20250208

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Transgrid
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Supplementary Information 3dii - Technical Memo - Reduction of Minimum Synchronous Generators in SA - GHD - 20250208

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Transgrid
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Appendix 4a - Independent estimate to complete report - Turner & Townsend - 20250908

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Transgrid
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Appendix 4b - Project EnergyConnect new contract review - E3 Advisory - 20260304

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Transgrid
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Appendix 4c - Project EnergyConnect - Benchmark Report - KPMG - 20250601

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Transgrid
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Appendix 6a - Statement of facts - reliability and security impacts - GHD - 20251212

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Transgrid
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Appendix 6b - Letter of support - ElectraNet - 20250818

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Transgrid
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Appendix 7a - Capex forecast model - 20260213

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Transgrid
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Appendix 7b - Labour and Indirects model - 20260213

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Transgrid
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Appendix 7c - Post-tax revenue model - Transgrid - 20260213

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Transgrid
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Submissions

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We invite energy consumers and other interested parties to make submissions on Transgrid’s reopener application by Tuesday, 28 April 2026.

Written submissions should be sent electronically to ResetCoordataer [dot] gov [dot] au (ResetCoord[at]aer[dot]gov[dot]au) and addressed to Kami Kaur, Acting Executive General Manager, Network Regulation, Australian Energy Regulator. 

ResetCoordataer [dot] gov [dot] au (Email your submission)

Alternatively, submissions can be mailed to 

GPO Box 3131
Canberra ACT 
2601

Submissions should be in Microsoft Word or another text readable document format.

We prefer that all submissions be publicly available to facilitate an informed and transparent consultative process. We will treat submissions as public documents unless otherwise requested. 

Parties wishing to submit confidential information should:

  • clearly identify the information that is the subject of the confidentiality claim
  • provide a non-confidential version of the submission in a form suitable for publication.

All non-confidential submissions will be placed on the AER's website.