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Access arrangement 2025 to 2029

ATCO Gas Australia Pty Ltd (ATCO) operates the Mid-West and South-West Gas Distribution Systems (MWSW GDS). The MWSW GDS consists of natural gas distribution networks that service Geraldton, Bunbury, Busselton, Harvey, Pinjarra, Brunswick Junction, Capel and the Perth greater metropolitan area (including Mandurah).

The MWSW GDS is a regulated distribution network and requires an approved access arrangement. The current access arrangement for the GDS is valid until the next access arrangement is approved. 

The process for gas access arrangement reviews has changed since the ERA’s last review of ATCO’s access arrangement for the GDS in 2019. There are now two key stages involved in the ERA’s decision making process for an access arrangement: (a) Reference Service Proposal and (b) Access Arrangement Proposal. Under the National Gas Rules, ATCO must submit a reference service proposal to the ERA 12 months before the access arrangement proposal.

On 1 September 2022, ATCO submitted a reference service proposal for the MWSW GDS. The ERA published ATCO’s proposal for consultation on 15 September 2022 and received two submissions. On 14 November 2022, the ERA decided to approve the reference services set out in ATCO’s reference service proposal.

On 1 September 2023, ATCO submitted its access arrangement proposal for the sixth access arrangement period (AA6): 1 January 2025 to 31 December 2029. The ERA published an issues paper on 24 October 2023 to assist interested parties to make submissions on ATCO’s proposal. The ERA received 12 submissions, which were considered as part of the ERA’s draft decision process.

On 24 April 2024, the ERA published its draft decision. In response to the draft decision, ATCO submitted revisions to its proposal on 10 June 2024.

Interested parties were invited to make public submissions on the ERA's draft decision and ATCO's revised proposal. The ERA received seven submissions by the deadline of Tuesday, 9 July 2024.

On 8 November 2024, the ERA published its final decision on the proposed revised access arrangement for the Mid-West and South-West Gas Distribution Systems. The ERA did not approve ATCO's proposed changes to the access arrangement and published a revised access arrangement and access arrangement information.

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Access Arrangement

0.74 MB

08 Nov 2024

Annexure F - Template Service Agreement

1.03 MB

08 Nov 2024

Annexure G - Permanent Disconnection Contract

0.18 MB

08 Nov 2024

Revised Access Arrangement Information

0.65 MB

08 Nov 2024

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AGL

0.07 MB

12 Jul 2024

Alinta Energy

0.30 MB

12 Jul 2024

Chamber of Minerals and Energy

0.07 MB

12 Jul 2024

Expert Consumer Panel

1.22 MB

12 Jul 2024

Kleenheat

0.17 MB

12 Jul 2024

Synergy

0.11 MB

12 Jul 2024

WA Council of Social Service

0.21 MB

12 Jul 2024

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Draft Decision - Overview

0.73 MB

24 Apr 2024

Draft Decision - Attachment 2: Demand

0.60 MB

24 Apr 2024

Draft Decision - Attachment 6: Depreciation

0.68 MB

24 Apr 2024

Draft Decision - Tariff Model (public)

3.31 MB

24 Apr 2024

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AGL Energy

0.10 MB

05 Dec 2023

Alinta Energy

0.36 MB

05 Dec 2023

Chamber of Minerals and Energy

0.20 MB

05 Dec 2023

Expert Consumer Panel

0.54 MB

05 Dec 2023

Housing Industry Association

0.14 MB

05 Dec 2023

Kleenheat

0.61 MB

05 Dec 2023

Origin Energy

0.12 MB

05 Dec 2023

Stewart Lee (individual)

0.09 MB

05 Dec 2023

Synergy

0.16 MB

05 Dec 2023

Urban Development Institute of Australia

0.10 MB

05 Dec 2023

WA Council of Social Service

0.27 MB

05 Dec 2023

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Issues Paper

1.16 MB

24 Oct 2023

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03.005 - ATCO Demand Model v14 ED V12

4.69 MB

03 Nov 2023

03.006 - ATCO Demand Model v14 EH V6

4.64 MB

03 Nov 2023

03.007 - ATCO Demand Model v14 HFV6

4.69 MB

03 Nov 2023

03.008 - ATCO Demand Model v14 GR V6

4.64 MB

03 Nov 2023

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01.003 - AA6 Document Map Proposal.pptx

0.13 MB

18 Sep 2023

01.004 - Access Arrangement Proposal Checklist

0.30 MB

18 Sep 2023

01.006A - Regulatory Cost Allocation Method

1.19 MB

18 Sep 2023

03.002 - Future of Gas Report

2.37 MB

18 Sep 2023

03.004A - Renewable Gas Delivery Strategy

6.41 MB

18 Sep 2023

07.001 - Core Energy - Gas Demand Forecast

1.99 MB

18 Sep 2023

09.003 - Quantonomics - Benchmarking Report

3.42 MB

18 Sep 2023

09.008A - UAFG Strategy and Forecast

0.90 MB

18 Sep 2023

10.013 - MRP Tool Overview

1.46 MB

18 Sep 2023

11.001 - Regulatory depreciation for AA6

0.73 MB

18 Sep 2023

16.001A - ATCO Gas Tariff Model

3.38 MB

18 Sep 2023

16.002 - Tariff setting method

0.49 MB

18 Sep 2023

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Decision on Reference Service Proposal

0.42 MB

14 Nov 2022

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AGL submission

0.11 MB

20 Oct 2022

Alinta Energy submission

0.27 MB

20 Oct 2022

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ATCO's Reference Service Proposal

4.68 MB

15 Sep 2022