On 28 November 2025, we released our draft decision on AGN's (SA) access arrangement proposal for the 2026–31 period commencing 1 July 2025.
Draft decision
AER - Draft decision - AGN (SA) access arrangement 2026–31 - Overview - November 2025
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AER - Draft decision - AGN (SA) access arrangement 2026–31 - Attachment 1 – Capital base, Regulatory depreciation and Corporate income tax - November 2025
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AER - Draft decision - AGN (SA) access arrangement 2026–31 - Attachment 2 - Capital expenditure - November 2025
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AER - Draft decision - AGN (SA) access arrangement 2026–31 - Attachment 3 - Operating expenditure - November 2025
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AER - Draft decision - AGN (SA) access arrangement 2026–31 - Attachment 4 - Demand - November 2025
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AER - Draft decision - AGN (SA) access arrangement 2026–31 - Attachment 5 - Reference services, tariffs and non-tariff components - November 2025
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AER - Draft decision - AGN (SA) access arrangement 2026–31 - Attachment 6 - Capital expenditure sharing scheme - November 2025
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AER - Draft decision - AGN (SA) access arrangement 2026–31 - Attachment 7 - Efficiency carryover mechanism - November 2025
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Models
Our models relating to AGN's draft decision.
AER -Draft decision - AGN SA Access arrangement 2026–31- Post Tax Revenue Model - November 2025
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AER - Draft decision - AGN SA Access arrangement 2026–31 - Roll Forward Model - November 2025
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AER - Draft decision -AGN SA Access arrangement 2026–31 - Depreciation Model - November 2025
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AER - Draft decision - AGN (SA) Access arrangement 2026–31 - opex model - November 2025
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AER - Draft decision - AGN SA Access arrangement 2026–31 - CESS Model - November 2025
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AER - Draft decision - AGN (SA) Access arrangement 2026–31 - ECM model - November 2025
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Consultant reports
We commissioned the following reports, which we took into account when making our draft decision for AGN.
Deloitte Access Economics - Labour price growth forecasts - July 2025
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Frontier Economics - Review of gas demand forecasts for Australian Gas Network (SA) - November 2025
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Stakeholder submissions
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Interested stakeholders are invited to make a submission on both our draft decision and AGN’s revised proposal (due 14 January 2026).
Submissions will close on Friday, 13 February 2026 and can be emailed to aergasresets2026-31
aer [dot] gov [dot] au (aergasresets2026-31[at]aer[dot]gov[dot]au).
Public forum
We encourage you to participate in consultations to give us important insights, views and feedback that will inform our decision-making process.
On Monday, 8 December 2025 we will hold a public forum on our draft decisions for the 2026-31 gas access arrangements (AGN (SA), Evoenergy and the Amadeus Gas Pipeline).
Stakeholders interested in attending our public forum can register through Eventbrite [external link].