Developing our future plans for the South Australian network - July 2026 to June 2031

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We are a critical part of the energy supply chain here in South Australia by delivering natural gas to more than 480,000 homes and businesses through the Australian Gas Networks distribution network. Through an extensive engagement process with stakeholders and our customers, we have been developing our plans for the 2026/27 – 2030/31 Access Arrangement (AA) period, setting out how we plan to invest in our South Australian networks to deliver for our current and future customers.

We submitted our Final Plan for the five-year period from 1 July 2026 - 30 June 2031 to the Australian Energy Regulator (AER) on 1 July 2025. The AER published its Draft Decision on our proposals on 14 November 2025. We responded to this in our Revised Final Plan on 14 January 2026.

Some key highlights of our Revised Final Plan are:

Prices remain stable, with a proposed 1.5% nominal increase from July 2026 (a reduction of 1.1% in real terms), helping keep gas affordable and competitive for customers,

We have included $70 million of additional depreciation, which we see as the minimum required to mitigate risk and support smoother price outcomes over time,

We have accepted the AER’s move to a flatter residential tariff structure, while maintaining our position that similar changes for large business customers would result in inefficient cost shifting,

We have reinstated critical investment in IT transition, cyber security, meter replacement and safety, supported by further evidence requested by the AER, and

Overall net capital expenditure is materially lower than our original Final Plan, largely due to new rules requiring customers to directly fund new connections.


On this page, you will find links to information that we have prepared throughout our engagement process, including:

  • Customer workshop materials,
  • SA Reference Group meeting materials and summaries, and
  • Independent reports on our customer engagement by KPMG.


In order to increase the breadth and depth of engagement during this process, we also partnered with Orbviz to present the information in our documents in an interactive way, allowing our stakeholders and customers to choose which topics they wanted to spend more time understanding, as well as how deeply they wanted to understand them. We are in the process of updating Orbviz in-line with the proposals in our Revised Final Plan.


Next steps:

The AER published its Draft Decision on our proposals on 28 November 2025. Click here to read more.

We responded to the Draft Decision on 14 January 2026.

The AER will run a public consultation process on our Revised Final Plan until 13 February 2026.

The AER will publish its Final Decision before the next AA period commences.


We are a critical part of the energy supply chain here in South Australia by delivering natural gas to more than 480,000 homes and businesses through the Australian Gas Networks distribution network. Through an extensive engagement process with stakeholders and our customers, we have been developing our plans for the 2026/27 – 2030/31 Access Arrangement (AA) period, setting out how we plan to invest in our South Australian networks to deliver for our current and future customers.

We submitted our Final Plan for the five-year period from 1 July 2026 - 30 June 2031 to the Australian Energy Regulator (AER) on 1 July 2025. The AER published its Draft Decision on our proposals on 14 November 2025. We responded to this in our Revised Final Plan on 14 January 2026.

Some key highlights of our Revised Final Plan are:

Prices remain stable, with a proposed 1.5% nominal increase from July 2026 (a reduction of 1.1% in real terms), helping keep gas affordable and competitive for customers,

We have included $70 million of additional depreciation, which we see as the minimum required to mitigate risk and support smoother price outcomes over time,

We have accepted the AER’s move to a flatter residential tariff structure, while maintaining our position that similar changes for large business customers would result in inefficient cost shifting,

We have reinstated critical investment in IT transition, cyber security, meter replacement and safety, supported by further evidence requested by the AER, and

Overall net capital expenditure is materially lower than our original Final Plan, largely due to new rules requiring customers to directly fund new connections.


On this page, you will find links to information that we have prepared throughout our engagement process, including:

  • Customer workshop materials,
  • SA Reference Group meeting materials and summaries, and
  • Independent reports on our customer engagement by KPMG.


In order to increase the breadth and depth of engagement during this process, we also partnered with Orbviz to present the information in our documents in an interactive way, allowing our stakeholders and customers to choose which topics they wanted to spend more time understanding, as well as how deeply they wanted to understand them. We are in the process of updating Orbviz in-line with the proposals in our Revised Final Plan.


Next steps:

The AER published its Draft Decision on our proposals on 28 November 2025. Click here to read more.

We responded to the Draft Decision on 14 January 2026.

The AER will run a public consultation process on our Revised Final Plan until 13 February 2026.

The AER will publish its Final Decision before the next AA period commences.


Page last updated: 19 Jan 2026, 03:57 PM