Map of Wallumbilla Gladstone Pipeline

APA owns the Wallumbilla Gladstone Pipeline.


The 543-kilometre (mainline) Wallumbilla Gladstone Pipeline (WGP) is a 42-inch (1.05-metre) diameter, high pressure transmission pipeline connecting gas fields in Queensland's Surat Basin and APA’s East Coast Grid to the Queensland Curtis LNG (QCLNG) export facility on Curtis Island, near Gladstone.

A diagram of the WGP can be found here, showing:

  • Pipeline capacity.
  • Details of receipt and delivery points.
  • Key facilities connected to the pipeline.
  • Technical and physical characteristics of the pipeline.
APA Ownership



The WGP is a non-scheme pipeline

Capacity and Services

The following standard services are offered on the WGP, subject to available capacity:

  • Firm Transport
  • Interruptible Transport
  • Firm Park
  • Interruptible Park
  • Firm Loan
  • Interruptible Loan
  • Redirection
  • In Pipe Trade
  • Operational Capacity Transfer

A description of these services, including the Standard Gas Transportation Agreement (SGTA) can be found on the gas transmission services page. Further contract terms relevant to the WGP are contained in the Pipeline System Rules.

Relevant tariffs for these standard services can be found on the tariffs and terms page.

Non-standard services or alternative terms may be available by negotiation. 

Notes on services

Firm services are available over varying terms as set out on the gas transmission services page.    

Interruptible services are only available while the pipeline is fully contracted in respect of the corresponding firm service.

Service Usage Information

Service Usage Information Report

Service Availability Information 36-month uncontracted capacity outlook
12-month capacity outlook

Notes on available capacity

The amount of firm park or loan capacity available may be different to the amount of firm transport capacity on the pipeline that is reported in the 36-month uncontracted capacity outlook.

Policies, Procedures and Requirements

Metering and Measurement

Metering and Measurement obligations are outlined in APA’s SGTA (East and Central) and the Pipeline System Rules.

Gas Specification

The required Gas Specification for the WGP is available in the Pipeline System Rules. APA will measure and/or monitor gas quality in accordance with its relevant obligations under contract. Quality obligations are outlined in APA’s SGTA (East and Central).

Credit support

APA has minimum credit support requirements that are a pre-condition to gaining access to pipeline services. APA’s credit support requirements are set out here.


If you are interested in acquiring services for this pipeline, you can contact us on 07 3323 6110 to discuss your requirements. Alternatively, you may wish to email us at [email protected].

We encourage potential customers to contact APA early when considering their gas supply and transport needs. Early discussion of needs improves the likelihood that APA can tailor services to meet them.

Formal Access Request

Potential customers do not have to submit a Formal Access Request to gain access to an APA pipeline. If you are interested in acquiring services for this pipeline, you can contact us at the contact details above to discuss your requirements.

For APA's non-scheme pipelines, you have a right to make a Formal Access Request pursuant to Rule 559 of the National Gas Rules. Lodging a Formal Access Request triggers a formal process of Access Offer and information exchange between APA and the potential customer. Details are in APA’s User Access Guide.

You may also make a Formal Access Request pursuant to Rule 559 of the National Gas Rules by completing in full the relevant User Access Request Form for this pipeline and emailing it to [email protected].

APA Financial Information Disclosure – Part 23 National Gas Rules

APA is reporting financial information for its non-scheme pipelines — that is, pipelines that are not subject to full or light regulation, according to AER’s Financial Reporting Guideline for non-Scheme Pipelines. The financial information for the six months to 30 June 2018 and the years ending 30 June 2019 - 2021 includes Pipeline Financial Statements based on Australian Accounting Standards, the weighted average price for services on each of these pipelines, and the number derived using the AER recovered capital method (RCM).

Interested parties should read APA’s Basis of Preparation together with the completed financial information template that was developed by the AER.

In addition, APA advises in relation to RCM:

  1. The assumed initial capital structure is 40% equity and 60% debt. The level of equity will increase in circumstances where there is a shortfall in annual revenue.
  2. The return on equity is a commercial return applicable in a workably competitive market. Historically, this return for an established pipeline was in the range of 9-11%, depending on factors such as risk, terms and counterparty.
  3. The cost of debt is based on a 10-year rolling average of a market rate applicable for an entity whose business is solely the ownership and operatorship of the particular pipeline.

Basis of Preparation
WGP 2021 Part 23 Financial Reporting
WGP 2020 Part 23 Financial Reporting
WGP 2019 Part 23 Financial Reporting (Revised)
WGP 2018 Part 23 Financial Reporting

 Standard OTSA – Part 24 National Gas Rules

Standard OTSA
WGP Specific Terms
Facility Details referred to in clause 2 of the Facility Specific Terms