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Access Arrangement for Period commencing 2025

The Goldfields Gas Pipeline (GGP) is a 1,378-kilometre transmission pipeline extending from Yarraloola to Kalgoorlie and is operated by Goldfields Gas Transmission (GGT). Part of the GGP is a scheme (regulated) pipeline that must have an access arrangement approved by the ERA (the other portion of the pipeline is a non-scheme pipeline).

The process for gas access arrangement reviews has changed since the ERA’s last review of GGT’s access arrangement for the GGP 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, GGT must submit a reference service proposal to the ERA 12 months before the access arrangement proposal.

On 21 December 2022, GGT submitted a reference service proposal for the GGP. The ERA published GGT’s proposal for consultation on 10 February 2023. On 21 June 2023, the ERA made a decision approve GGT’s proposal to retain the firm transportation service as the single reference service for the GGP.

On 21 December 2023 (ahead of the required submission date of 1 January 2024), GGT submitted its access arrangement proposal for the fifth access arrangement period (AA5): 1 January 2025 to 31 December 2029. The ERA published GGT’s proposal and related documents for public consultation on 29 January 2024.

The ERA published an issues paper on 12 March 2024 to assist interested parties in making submissions. The ERA received one submission from Alinta Energy.

On 25 July 2024, the ERA published its draft decision.  GGT submitted a revised proposal in response to the draft decision on 5 September 2024. Interested parties had until 8 October 2024 to make submissions on the ERA’s draft decision and GGT's revised proposal. No submissions were received.

Further information about the access arrangement framework and decision making process can be found in the ERA’s gas access arrangement guideline.

GGT AA5 Revised Access Arrangement and Access Arrangement Information

Date Documents
File type
09-Sep-2024 GGP AA5 - Revised access arrangement
Adobe PDF 723 kB
09-Sep-2024 GGP AA5 - Revised access arrangement (tracked)
Adobe PDF 787 kB
09-Sep-2024 GGP AA5 - Revised access arrangement information
Adobe PDF 406 kB

GGT AA5 Revised Access Arrangement and Access Arrangement Information

Date Documents
File type
09-Sep-2024 GGP AA5 - Revised proposal overview - Summary for customers
Adobe PDF 1.3 MB
09-Sep-2024 GGP AA5 - Revised proposal overview
Adobe PDF 1.9 MB
09-Sep-2024 GGP AA5 - Tariff model - Public
Microsoft Excel 7.0 MB
09-Sep-2024 GGP AA5 - Attachment 3.1 - Demand forecast report - Public
Adobe PDF 567 kB
09-Sep-2024 GGP AA5 - Attachment 3.3 - Demand forecast model - revised - Public
Microsoft Excel 39 kB
09-Sep-2024 GGP AA5 - Attachment 5.1 - Opex model - revised - Public
Microsoft Excel 78 kB
09-Sep-2024 GGP AA5 - Claim for confidentiality
Adobe PDF 144 kB
09-Sep-2024 GGP AA5 - Document index
Adobe PDF 106 kB

Draft Decision

Date Documents File type
25-Jul-24 Draft Decision - Overview
Adobe PDF 598 kB

Description: Draft Decision - Overview
25-Jul-24 Draft Decision – Attachment 1: Access arrangement and services
Adobe PDF 327 kB

Description: Draft Decision – Attachment 1: Access arrangement and services
25-Jul-24 Draft Decision – Attachment 2: Demand
Adobe PDF 404 kB

Description: Draft Decision – Attachment 2: Demand
25-Jul-24 Draft Decision – Attachment 3: Revenue and tariffs
Adobe PDF 446 kB

Description: Draft Decision – Attachment 3: Revenue and tariffs
25-Jul-24 Draft Decision – Attachment 4: Regulatory capital base
Adobe PDF 665 kB

Description: Draft Decision – Attachment 4: Regulatory capital base
25-Jul-24 Draft Decision – Attachment 5: Operating expenditure
Adobe PDF 444 kB

Description: Draft Decision – Attachment 5: Operating expenditure
25-Jul-24 Draft Decision – Attachment 6: Depreciation
Adobe PDF 596 kB

Description: Draft Decision – Attachment 6: Depreciation
25-Jul-24 Draft Decision – Attachment 7: Return on capital, taxation, incentives
Adobe PDF 600 kB

Description: Draft Decision – Attachment 7: Return on capital, taxation, incentives
25-Jul-24 Draft Decision – Attachment 8: Other access arrangement provisions
Adobe PDF 369 kB

Description: Draft Decision – Attachment 8: Other access arrangement provisions
25-Jul-24 Draft Decision – Attachment 9: Service terms and conditions
Adobe PDF 275 kB

Description: Draft Decision – Attachment 9: Service terms and conditions
25-Jul-24 Draft Decision – Tariff Model (public)
Microsoft Excel 6 MB

Description: Draft Decision – Tariff Model (public)
25-Jul-24 Report – EMCa: Technical review of GGT access arrangement proposal 2025-29
Adobe PDF 1 MB

Description: Report – EMCa: Technical review of GGT access arrangement proposal 2025-29

Public submission in response to Issues Paper

Date Documents File type
20-May-24 Alinta Energy
Adobe PDF 167 kB

Description: Alinta Energy

Issues Paper

Date Documents File type
12-Mar-24 GGP - GGT - AA5 - Issues Paper
Adobe PDF 908 kB

Description: GGP - GGT - AA5 - Issues Paper

GGT AA5: Proposed Access Arrangement and Access Arrangement Information

Date Documents File type
29-Jan-24 GGP AA5 – Proposed revised access arrangement
Adobe PDF 1 MB

Description: GGP AA5 – Proposed revised access arrangement
29-Jan-24 GGP AA5 – Proposed revised access arrangement (tracked)
Adobe PDF 1 MB

Description: GGP AA5 – Proposed revised access arrangement (tracked)
29-Jan-24 GGP AA5 – Access arrangement information
Adobe PDF 1 MB

Description: GGP AA5 – Access arrangement information

GGT AA5: Proposed supporting information

Date Documents File type
29-Jan-24 GGP AA5 – Proposal overview
Adobe PDF 3 MB

Description: GGP AA5 – Proposal overview
29-Jan-24 GGP AA5 – Proposal overview (summary for customers)
Adobe PDF 2 MB

Description: GGP AA5 – Proposal overview (summary for customers)
29-Jan-24 GGP AA5 – Proposal factsheet
Adobe PDF 265 kB

Description: GGP AA5 – Proposal factsheet
29-Jan-24 GGP AA5 – Document index
Adobe PDF 71 kB

Description: GGP AA5 – Document index
29-Jan-24 GGP AA5 – Claim for confidentiality
Adobe PDF 265 kB

Description: GGP AA5 – Claim for confidentiality
29-Jan-24 GGP AA5 – Compliance checklist
Adobe PDF 225 kB

29-Jan-24 GGP AA5 – Tariff model
Microsoft Excel 7 MB

Description: GGP AA5 – Tariff model
29-Jan-24 GGP AA5 Attachment 5.1 – Demand forecast report
Adobe PDF 560 kB

Description: GGP AA5 Attachment 5.1 – Demand forecast report
29-Jan-24 GGP AA5 Attachment 5.2 – Demand forecast model
Microsoft Excel 39 kB

Description: GGP AA5 Attachment 5.2 – Demand forecast model
29-Jan-24 GGP AA5 Attachment 6.1 – Cost allocation method
Adobe PDF 589 kB

29-Jan-24 GGP AA5 Attachment 10.1 – Capital expenditure overview
Adobe PDF 2 MB

Description: GGP AA5 Attachment 10.1 – Capital expenditure overview
29-Jan-24 GGP AA5 Attachment 10.2 – Capital expenditure model
Microsoft Excel 644 kB

Description: GGP AA5 Attachment 10.2 – Capital expenditure model
29-Jan-24 GGP AA5 Attachment 10.4 – Information technology and operational technology plan
Adobe PDF 7 MB

Description: GGP AA5 Attachment 10.4 – Information technology and operational technology plan
29-Jan-24 GGP AA5 Attachment 10.8 – Asset performance and lifecycle plan
Adobe PDF 3 MB

Description: GGP AA5 Attachment 10.8 – Asset performance and lifecycle plan
29-Jan-24 GGP AA5 Attachment 10.10 – SIB business case (in-line inspection)
Adobe PDF 1 MB

Description: GGP AA5 Attachment 10.10 – SIB business case (in-line inspection)
29-Jan-24 GGP AA5 Attachment 10.11 – SIB business case (rotating equipment major maintenance)
Adobe PDF 4 MB

Description: GGP AA5 Attachment 10.11 – SIB business case (rotating equipment major maintenance)
29-Jan-24 GGP AA5 Attachment 10.11.1 – SIB business case (rotating equipment major maintenance) – NPV model
Microsoft Excel 59 kB

Description: GGP AA5 Attachment 10.11.1 – SIB business case (rotating equipment major maintenance) – NPV model
29-Jan-24 GGP AA5 Attachment 10.12 – SIB business case (end of equipment life)
Adobe PDF 3 MB

Description: GGP AA5 Attachment 10.12 – SIB business case (end of equipment life)
29-Jan-24 GGP AA5 Attachment 10.12.1 – SIB business case (end of life equipment) – NPV model
Microsoft Excel 54 kB

Description: GGP AA5 Attachment 10.12.1 – SIB business case (end of life equipment) – NPV model
29-Jan-24 GGP AA5 Attachment 10.13 – SIB business case (Wiluna wet seals)
Adobe PDF 1,017 kB

Description: GGP AA5 Attachment 10.13 – SIB business case (Wiluna wet seals)
29-Jan-24 GGP AA5 Attachment 10.15 – SIB business case (GEA replacement program)
Adobe PDF 1 MB

Description: GGP AA5 Attachment 10.15 – SIB business case (GEA replacement program)
29-Jan-24 GGP AA5 Attachment 10.15.1 – SIB business case (GEA replacement program) – NPV model
Microsoft Excel 40 kB

Description: GGP AA5 Attachment 10.15.1 – SIB business case (GEA replacement program) – NPV model
29-Jan-24 GGP AA5 Attachment 10.16 – SIB business case (buried services)
Adobe PDF 1 MB

Description: GGP AA5 Attachment 10.16 – SIB business case (buried services)
29-Jan-24 GGP AA5 Attachment 10.16.1 – SIB business case (buried services) – NPV model
Microsoft Excel 46 kB

Description: GGP AA5 Attachment 10.16.1 – SIB business case (buried services) – NPV model
29-Jan-24 GGP AA5 Attachment 11.1 – Operating expenditure model
Microsoft Excel 71 kB

Description: GGP AA5 Attachment 11.1 – Operating expenditure model

Decision on GGT’s Reference Service Proposal

Date Documents File type
21-Jun-23 Decision on Reference Service Proposal
Adobe PDF 396 kB

ERA Consultation on GGT’s Reference Service Proposal

Date Documents File type
17-Mar-23 GGT submission on Reference Service Proposal
Adobe PDF 111 kB

GGT Reference Service Proposal

Date Documents File type
10-Feb-23 GGT’s Reference Service Proposal
Adobe PDF 488 kB

Page last updated: 10 Oct 2024