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Access Arrangement for Period commencing 2026

The Dampier to Bunbury Natural Gas Pipeline (DBNGP) is one of the largest capacity natural gas transmission pipelines in Australia, spanning 1,600 kilometres starting near the township of Dampier, running parallel to the coast of Western Australia, and finishing near Bunbury, south of Perth. It connects the gas fields located in the state’s northwest directly to mining, industrial and commercial customers. The pipeline is owned and operated by Dampier Bunbury Pipeline (DBP) and is part of the Australian Gas Infrastructure Group (AGIG).

The process for gas access arrangement reviews has changed since the ERA’s last review of DBP’s access arrangement for the DBNGP in 2021. 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, DBP must submit a reference service proposal to the ERA 12 months before submitting an access arrangement proposal.

On 8 December 2023, DBP submitted its reference service proposal. The ERA published DBP’s proposal for consultation on 9 February 2024 and on 1 July 2024 made the decision to not approve it. The ERA subsequently published its own reference service proposal, which retains the current three reference services (Full Haul, Part Haul and Back Haul) and specification of data and storage services as pipeline services that can reasonably be provided.

On 2 January 2025, DBP submitted its access arrangement proposal for the sixth access arrangement period (AA6): 1 January 2026 to 31 December 2030. The ERA published DBP’s proposal and related documents for public consultation on 23 January 2025.  The ERA will publish an issues paper in due course to assist interested parties in making submissions.

The submission period on DBP’s proposal is due to close 1 April 2025.

DBP AA6 Proposed Access Arrangement and Access Arrangement Information

Date Documents File type
23-Jan-25 DBNGP Access Arrangement 2026-2030
Adobe PDF 888 kB

Description: DBNGP Access Arrangement 2026-2030
23-Jan-25 DBNGP Access Arrangement 2026-2030 (marked up)
Adobe PDF 1,023 kB

Description: DBNGP Access Arrangement 2026-2030 (marked up)
23-Jan-25 DBNGP AA Attachment 1 - Description of the DBNGP 1 January 2025
Adobe PDF 540 kB

Description: DBNGP AA Attachment 1 - Description of the DBNGP 1 January 2025
23-Jan-25 DBNGP AA Attachment 2 - T1 Full Haul Reference Service Terms and Conditions
Adobe PDF 2 MB

Description: DBNGP AA Attachment 2 - T1 Full Haul Reference Service Terms and Conditions
23-Jan-25 DBNGP AA Attachment 3 - P1 Part Haul Reference Service Terms and Conditions
Adobe PDF 2 MB

Description: DBNGP AA Attachment 3 - P1 Part Haul Reference Service Terms and Conditions
23-Jan-25 DBNGP AA Attachment 4 - B1 Back Haul Reference Service Terms and Conditions
Adobe PDF 2 MB

Description: DBNGP AA Attachment 4 - B1 Back Haul Reference Service Terms and Conditions
23-Jan-25 DBNGP Access Arrangement Information (Final Plan 2026-2030)
Adobe PDF 8 MB

Description: DBNGP Access Arrangement Information (Final Plan 2026-2030)

DBP AA6 Proposed Access Arrangement Supporting Information

Date Documents File type
23-Jan-25 Final Plan 2026-2030 - Attachment 1.1 Regulatory Framework
Adobe PDF 502 kB

Description: Final Plan 2026-2030 - Attachment 1.1 Regulatory Framework
23-Jan-25 Final Plan 2026-2030 - Attachment 1.2 Draft Plan DBNGP AA6
Adobe PDF 12 MB

Description: Final Plan 2026-2030 - Attachment 1.2 Draft Plan DBNGP AA6
23-Jan-25 Final Plan 2026-2030 - Attachment 1.3 Final Plan Document Map
Adobe PDF 1 MB

Description: Final Plan 2026-2030 - Attachment 1.3 Final Plan Document Map
23-Jan-25 Final Plan 2026-2030 - Attachment 1.4 Confidentiality Claims
Adobe PDF 157 kB

Description: Final Plan 2026-2030 - Attachment 1.4 Confidentiality Claims
23-Jan-25 Final Plan 2026-2030 - Attachment 2.1 Environmental, Social and Governance Report 2023
Adobe PDF 29 MB

Description: Final Plan 2026-2030 - Attachment 2.1 Environmental, Social and Governance Report 2023
23-Jan-25 Final Plan 2026-2030 - Attachment 5.1 Draft Engagement Plan June 2023
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 5.1 Draft Engagement Plan June 2023
23-Jan-25 Final Plan 2026-2030 - Attachment 5.2 Final Engagement Plan August 2023
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 5.2 Final Engagement Plan August 2023
23-Jan-25 Final Plan 2026-2030 - Attachment 5.3 Draft Plan Feedback
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 5.3 Draft Plan Feedback
23-Jan-25 Final Plan 2026-2030 - Attachment 5.4 Customer Engagement Report December 2024
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 5.4 Customer Engagement Report December 2024
23-Jan-25 Final Plan 2026-2030 - Attachment 6.1 Future of Gas Rationale and Modelling Approach
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 6.1 Future of Gas Rationale and Modelling Approach
23-Jan-25 Final Plan 2026-2030 - Attachment 8.1 OPEX Model 2026-30
Microsoft Excel 1 MB

Description: Final Plan 2026-2030 - Attachment 8.1 OPEX Model 2026-30
23-Jan-25 Final Plan 2026-2030 - Attachment 8.2 OPEX Business Cases
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 8.2 OPEX Business Cases
23-Jan-25 Final Plan 2026-2030 - Attachment 8.3 Review of Labour Cost Rate Update
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 8.3 Review of Labour Cost Rate Update
23-Jan-25 Final Plan 2026-2030 - Attachment 9.4 IT Investment Plan
Adobe PDF 6 MB

Description: Final Plan 2026-2030 - Attachment 9.4 IT Investment Plan
23-Jan-25 Final Plan 2026-2030 - Attachment 9.5 CAPEX Business Cases
Adobe PDF 115 MB

Description: Final Plan 2026-2030 - Attachment 9.5 CAPEX Business Cases
23-Jan-25 Final Plan 2026-2030 - Attachment 9.6 CAPEX Model 2026-30
Microsoft Excel 708 kB

Description: Final Plan 2026-2030 - Attachment 9.6 CAPEX Model 2026-30
23-Jan-25 Final Plan 2026-2030 - Attachment 9.7 Cost Estimation Methodology 2026-30
Adobe PDF 7 MB

Description: Final Plan 2026-2030 - Attachment 9.7 Cost Estimation Methodology 2026-30
23-Jan-25 Final Plan 2026-2030 - Attachment 9.8 Operational Risk Management Framework
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 9.8 Operational Risk Management Framework
23-Jan-25 Final Plan 2026-2030 - Attachment 9.9 AGIG Contracts and Procurement Policy
Adobe PDF 1 MB

Description: Final Plan 2026-2030 - Attachment 9.9 AGIG Contracts and Procurement Policy
23-Jan-25 Final Plan 2026-2030 - Attachment 9.10 AGIG Purchasing Procedure
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 9.10 AGIG Purchasing Procedure
23-Jan-25 Final Plan 2026-2030 - Attachment 12.1 E-Factor Calculation Model
Microsoft Excel 527 kB

Description: Final Plan 2026-2030 - Attachment 12.1 E-Factor Calculation Model
23-Jan-25 Final Plan 2026-2030 - Attachment 14.1 Tariff Model (public)
Microsoft Excel 8 MB

Description: Final Plan 2026-2030 - Attachment 14.1 Tariff Model (public)
23-Jan-25 Final Plan 2026-2030 - Attachment 15.1 Submissions for changes to AA6 Reference Service Contract
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 15.1 Submissions for changes to AA6 Reference Service Contract
23-Jan-25 Final Plan 2026-2030 - Attachment 15.2 T1 Service Terms and Conditions AA6 Proposed Changes (clean)
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 15.2 T1 Service Terms and Conditions AA6 Proposed Changes (clean)
23-Jan-25 Final Plan 2026-2030 - Attachment 15.2 T1 Service Terms and Conditions AA6 Proposed Changes (marked up)
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 15.2 T1 Service Terms and Conditions AA6 Proposed Changes (marked up)
23-Jan-25 Final Plan 2026-2030 - Attachment 15.3 P1 Service Terms and Conditions AA6 Proposed Changes (clean)
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 15.3 P1 Service Terms and Conditions AA6 Proposed Changes (clean)
23-Jan-25 Final Plan 2026-2030 - Attachment 15.3 P1 Service Terms and Conditions AA6 Proposed Changes (marked up)
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 15.3 P1 Service Terms and Conditions AA6 Proposed Changes (marked up)
23-Jan-25 Final Plan 2026-2030 - Attachment 15.4 B1 Service Terms and Conditions AA6 Proposed Changes (clean)
Adobe PDF 3 MB

Description: Final Plan 2026-2030 - Attachment 15.4 B1 Service Terms and Conditions AA6 Proposed Changes (clean)
23-Jan-25 Final Plan 2026-2030 - Attachment 15.4 B1 Service Terms and Conditions AA6 Proposed Changes (marked up)
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 15.4 B1 Service Terms and Conditions AA6 Proposed Changes (marked up)
23-Jan-25 Final Plan 2026-2030 - Attachment 15.5 Submissions on Proposed AA6 Document Changes
Adobe PDF 2 MB

Description: Final Plan 2026-2030 - Attachment 15.5 Submissions on Proposed AA6 Document Changes

Decision on DBP’s Reference Service Proposal

Date Documents File type
01-Jul-24 Decision on Reference Service Proposal
Adobe PDF 410 kB

01-Jul-24 ERA’s revised Reference Service Proposal
Adobe PDF 236 kB

Description: ERA’s revised Reference Service Proposal

ERA Consultation on DBNGP’s Reference Service Proposal

Date Documents File type
20-May-24 DBP submission on Reference Service Proposal
Adobe PDF 648 kB

Description: DBP submission on Reference Service Proposal
20-May-24 South32 submission on Reference Service Proposal
Adobe PDF 924 kB

Description: South32 submission on Reference Service Proposal

Reference Service Proposal

Date Documents File type
09-Feb-24 DBP’s reference service proposal
Adobe PDF 913 kB

Description: DBP’s reference service proposal
Page last updated: 23 Jan 2025