Draft decision - Revenue proposal
On 12 September 2025, we released our draft decision on APA Group's transmission revenue proposal for the Basslink interconnector.
Invitation for submissions
We invite interested stakeholders to send submissions on our draft decision and APA's upcoming revised proposal by 12 December 2025. Submissions and requests to make a submission via alternative methods should be emailed to resetcoord
aer [dot] gov [dot] au (resetcoord[at]aer[dot]gov[dot]au).
Public forum
On Tuesday, 30 September 2025 at 10:00am (AEST) we will hold a public forum on our draft decision. You can register your interest on Eventbrite here. Please note registration via Eventbrite will close at 4:00 pm on 29 September 2025.
Commencement and Process Paper
Our final decision to accept APA Group's application to convert the Basslink interconnector requires us to recommence the revenue determination process.
On 12 September 2025, we released an updated Commencement and Process Paper that sets out the new timeline for the revenue determination.
On 26 June 2025, we published a Consultation Paper that sets out the proposed timeline for the revenue determination. Stakeholder submissions to our Consultation Paper closed on 11 July 2025 and are available on our website.
Revenue determination
In October 2024 APA Group provided a revised proposed opening regulatory asset base value and revised cost allocation methodology, available on our website.
On 10 November 2023, we released an Issues Paper for the Basslink interconnector conversion application and revenue determination. Submissions in response to the Issues Paper are available on our website.
Conversion
On 26 June 2025, we published our final decision on the application from APA Group to convert the service of the Basslink interconnector from a market network service to a prescribed transmission service.
On 17 December 2024, we published our draft decision on the application from APA Group to convert the services of the Basslink interconnector from a market network service to a prescribed transmission service.
Stakeholder submissions on our draft decision closed on 31 January 2025 and are available on our website.
On 30 August 2024, we released a Consultation Paper in respect to APA Group's application to convert the Basslink interconnector from a market network service to a prescribed transmission service.
The Consultation Paper is supported by ACIL Allen's modelling report, available on our website.
Background
Basslink is a 500 MW undersea transmission cable which links Loy Yang in Victoria to George Town in Tasmania. In 2022, APA Group acquired Basslink Pty Ltd, the owner and operator of Basslink.
In December 2022, the Australian Energy Market Commission (AEMC) implemented a rule change which allows us to make a transmission determination for a network service provider that has applied to us seeking to convert its network services to prescribed transmission services.
On 19 May 2023, APA Group lodged an application:
- to convert Basslink’s network services from market network services to prescribed transmission services
- requesting us to commence, and determine, the process of making a transmission determination for Basslink.
Lodging the request to convert means that Basslink is an ‘Intending TNSP’ under rule 6A.9 of the National Electricity Rules (NER). An Intending TNSP may ask us to commence the process of making a transmission determination.
On 14 July 2023, the AER published its decision to commence a transmission determination process for Basslink and the Commencement and Process Paper outlining the process that will apply for this determination.