Draft decision

On 12 September 2025 we published our draft decision on APA Group's transmission revenue proposal for Basslink for the 2026–30 regulatory control period. 

AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Overview - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 1 - Opening regulatory asset base - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 2 - Capital expenditure - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 3 - Operating expenditure - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 4 - Efficiency benefit sharing scheme - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 5 - Capital expenditure sharing scheme - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 6 - Service target performance incentive scheme - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 7 - Transmission pricing methodology - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 8 - Negotiated services - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Attachment 9 - Pass through events - September 2025

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Models

Our models relating to the Basslink draft decision.

AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - PTRM - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Capex Model - September 2025

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 to 2030 - Basslink - Opex Model

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 - 2030 - Basslink RFM

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 - 2030 - Basslink Opening RAB RFM 2001-06

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 - 2030 - Basslink Opening RAB RFM 2007-15

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AER - Draft Decision - Basslink Electricity Transmission Determination 2026 - 2030 - Basslink Opening RAB RFM 2016-25

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Predetermination conference

On 30 September 2025, we hosted a predetermination conference to provide stakeholders the opportunity to ask questions about our draft decision.  The presentation slides are available below.

 

AER - Predetermination Conference - Basslink draft decision - September 2025

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Submissions

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We value stakeholder input and invite stakeholders to make submissions on our draft decision.

Submissions should be sent to: resetcoordataer [dot] gov [dot] au (resetcoord[at]aer[dot]gov[dot]au) and will close on 12 December 2025.