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. 

On 1 September 2026, we published a consultation paper setting out our preliminary position on Transgrid’s application to reopen the 2023–28 transmission revenue determination for Project EnergyConnect. While this is not a legislated requirement for the reopener process, we consider that all stakeholders should have the opportunity to engage with our preliminary views. We invited stakeholders to make submissions on our consultation paper by 1 October 2026. 

Consultation paper

On 1 September, we published a consultation paper setting out our preliminary position on Transgrid’s application to reopen its 2023–28 transmission revenue determination for Project EnergyConnect.

Consultation paper - AER preliminary position on Transgrid’s application to reopen the 2023–28 transmission revenue determination for Project EnergyConnect

Authors
AER
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Document

Submissions on consultation paper

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We invited stakeholders to make submissions on our consultation paper. Submissions closed on 1 October 2026.

AGL Energy - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
AGL Energy
Content type
Document

AirTrunk - Submission - Project EnergyConnect reopener consultation paper - October 2026

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Alinta Energy - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
Alinta Energy
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APA - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
APA
Content type
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Cameron Lennie - Submission - Project EnergyConnect reopener consultation paper - October 2026

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Centre for Smart Power and Energy Research - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
Centre for Smart Power and Energy Research
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Clean Energy Investor Group - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
Clean Energy Investor Group (CEIG)
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Document

Energy Networks Australia - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
Energy Networks Australia (ENA)
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Document

Energy Users Association of Australia - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
Energy Users Association of Australia (EUAA)
Content type
Document

Justice and Equity Centre - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
Justice and Equity Centre
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Document

Matthew Brooks - Submission - Project EnergyConnect reopener consultation paper - October 2026

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Document

Save our Surroundings Riverina - Submission - Project EnergyConnect reopener consultation paper - October 2026

Authors
Save Our Surroundings Riverina
Content type
Document

Transgrid - Submission - Project EnergyConnect reopener consultation paper - October 2026 View details

Transgrid - Submission - Project EnergyConnect reopener consultation paper - October 2026.pdf
PDF (199.04KB)
Transgrid - Response to the AER information request and consultation paper - October 2026_3.pdf
PDF (853.22KB)
Transgrid - Attachment 1 (Ninian Stephen Chambers) - Opinion as to the proper construction of NER cl 6A.7.1(a) and responses to the AER’s questions - October 2026.pdf
PDF (759.29KB)
Transgrid - Attachment 2 (Charles Popple) - Application of NER Clause 6A.7.1(a)(6) to Project EnergyConnect Reopener - October 2026.pdf
PDF (231.08KB)
Transgrid - Attachment 3 (GHD) - AER consultation_ Transgrid’s Application to reopen the 2023-28 determination PEC - October 2026.pdf
PDF (174.92KB)
Authors
Transgrid
Content type
Document

Transgrid's application

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.

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

Authors
Transgrid
Content type
Document

Transgrid's supporting material

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

View documents

Submissions on Transgrid's application

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We invited energy consumers and other interested parties to make submissions on Transgrid’s reopener application. Submissions closed on 28 April 2026. 

View documents

AEMO correspondence

We sought advice from Australian Energy Market Operator (AEMO) on the implications of PEC on system security and reliability in New South Wales and South Australia.

AER letter to AEMO - advice on Project Energy Connect system security

Authors
AER
Content type
Document

AEMO letter to Clare Savage AER RE - System security and reliability in relation to Project EnergyConnect 2026.06.01

Authors
Australian Energy Market Operator (AEMO)
Content type
Document

AER letter to AEMO - follow up advice on Project EnergyConnect system security

Authors
AER
Content type
Document

AEMO letter to Clare Savage AER RE - follow up advice on system security and reliability in relation to Project EnergyConnect 2026.06.26

Authors
Australian Energy Market Operator (AEMO)
Content type
Document