Eastern Goldfields Pipeline



The Eastern Goldfields Pipeline System (EGPS) comprises the Murrin Murrin Lateral and four transmission pipelines extending from the Murrin Murrin Lateral:

  • The 85-kilometre Murrin Murrin Lateral (MML) is connected to the Goldfields Gas Pipeline and transports gas to the Murrin Murrin mine site approximately 69 kilometres east of Leonora, and to the Eastern Goldfields Pipeline.
  • The 293-kilometre Eastern Goldfields Pipeline (EGP) connects the Murrin Murrin Lateral Pipeline to the Sunrise Dam, Tropicana and Granny Smith Gold Mines in the Eastern Goldfields Region of Western Australia.
  • The 5.7-kilometre Gwalia Lateral delivers gas from the Murrin Murrin Lateral to the Gwalia mine site just south of Leonora.
  • The 5-kilometre Mount Morgans Gas Pipeline delivers gas from the Eastern Goldfields Pipeline to the Mt Morgan Gold Mine, approximately 20 kilometres west of Laverton.
  • The 198-kilometre Yamarna Gas Pipeline runs from the Eastern Goldfields Pipeline to the Gruyere Gold Mine Site in the eastern Yilgarn.

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

  • Pipeline capacities.
  • Details of receipt and delivery points.
  • Key facilities connected to the system.
  • Technical and physical characteristics of the pipelines.
APA Ownership


Regulatory Status

All pipelines that make up the EGPS are non-scheme pipelines.

The Gwalia, Mount Morgans and Yamarna gas pipelines have current exemptions from reporting requirements under Part 23 of the National Gas Rules, as they are single shipper pipelines.

Capacity and Services

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

  • Firm transport.
  • Interruptible transport.
  • In pipe trade.

A description of these services, including APA’s Standard Gas Transportation Agreement (SGTA) can be found on the gas transmission services page.

Relevant tariffs for standard services on the Murrin Murrin Lateral and Eastern Goldfields Pipeline 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.

APA is progressively rolling out In pipe trade service capability on all key pipelines. APA will prioritise this service rollout in accordance with shipper demand.

Service Usage Information

Service Usage Information Report

Service Availability Information

36-month uncontracted capacity outlook
12-month capacity outlook

Notes on capacity

The 12-month capacity outlook for the Eastern Goldfields Pipeline System is reported under the Goldfields Gas Pipeline facility on the West Australian Gas Bulletin Board.

Policies, Procedures and Requirements

Metering and Measurement

Metering and Measurement obligations are outlined in the SGTA (West) and for this pipeline are set out here.

Gas Specification

In Western Australia, transmission pipeline gas specifications are governed by state legislation — the Gas Supply (Gas Quality Specifications) Act 2009 (2009 Act) — and by regulations made under that Act. The 2009 Act provides for a Western Australian standard specification, which is set out in the regulations (with some variations for particular pipelines), and a reference specification for each pipeline. These specifications are necessary for the operation of the scheme of the legislation.

The EGPS is a prescribed 3A pipeline under the West Australia Gas Supply (Gas Quality Specifications) Regulations 2010. The reference specifications for the EGPS are set out in clause 3A of Schedule 2 to the Regulations.

APA will measure and/or monitor gas quality in accordance with relevant obligations under contract. Quality obligations are outlined in the SGTA (West) and the 2009 Act and underlying regulations, where applicable.

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 gas transmission services for this pipeline, you can contact us on 08 6189 4300 to discuss your requirements. Alternatively, you may wish to make an enquiry by emailing 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.

Potential customers can make a Formal Access Request by completing in full the relevant User Access Request Form 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 ERA’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 - 2023 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 ERA 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 ERA.

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
MML 2023 Part 23 Financial Reporting
MML 2022 Part 23 Financial Reporting
MML 2021 Part 23 Financial Reporting
MML 2020 Part 23 Financial Reporting
MML 2019 Part 23 Financial Reporting (Revised)
MML 2018 Part 23 Financial Reporting
EGP 2023 Part 23 Financial Reporting
EGP 2022 Part 23 Financial Reporting
EGP 2021 Part 23 Financial Reporting
EGP 2020 Part 23 Financial Reporting
EGP 2019 Part 23 Financial Reporting (Revised)
EGP 2018 Part 23 Financial Reporting