goldfields gas pipeline

The Goldfields Gas Pipeline (GGP) is a 1,378-kilometre transmission pipeline that extends from Yarraloola, in the Pilbara region of Western Australia, to Kalgoorlie, in the Goldfields-Esperance region. The 47-kilometre Newman lateral is also part of the GGP.

The 8-kilometre Wiluna Lateral, and laterals to Mt Keith (8-kilometre), Leinster (5-kilometre) and Kalgoorlie Power Station (8-kilometre) are owned and operated by APA and interconnect with the GGP. The GGP also interconnects with the Eastern Goldfields Pipeline System at Leonora. At its southern extremity, the GGP connects with the Kalgoorlie to Kambalda Pipeline.

A diagram of the GGP and interconnected pipelines can be found here, showing:

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

GGP and Newman Lateral — 100%.
Wiluna, Murrin Murrin, Mt Keith, Leinster and Parkeston (Kalgoorlie Power Station) Laterals — 100%.

Some of the assets composing the GGP are covered for the purposes of the access regulatory regime of the National Gas (Western Australia) Act 2009, and are a scheme pipeline. However, some of the assets forming part of the GGP are not covered by the access regime, and are considered to be a non-scheme pipeline.

The following assets form that part of the GGP that is a scheme pipeline:

• The GGP mainline between the receipt points at the Yarraloola Compressor Station and the inlet to the Newman Lateral.
• Compressor Units 1 and 2 at Yarraloola, and Compressor Unit 1 at Paraburdoo.
• The GGP mainline between the inlet to the Newman Lateral and the delivery point at Kalgoorlie South.
• The compressor stations at Ilgarari and Wiluna.
• The pipeline between the Apache Energy meter station and the Yarraloola Compressor Station (Apache-GGP Interconnect Pipeline).
• Part of the DBNGP-GGP Interconnect Pipeline upstream of the Yarraloola Compressor Station.
• The Newman Lateral.

The following assets are not covered for the purposes of the access regulatory regime of the National Gas (Western Australia) Act. They make up part of the GGP, which is a non-scheme pipeline:

• Paraburdoo Compressor Station (Unit 2).
• Wyloo West Compressor Station.
• Ned’s Creek Compressor Station.
• Yarraloola Compressor Station, Unit 3, and Paraburdoo Compressor Station, Unit 3.
• Turee Creek Compressor Station.
• Custody transfer meter stations at Boonamich Well and Yarnima. 

The wholly owned APA laterals listed above are also non-scheme pipelines.

The Wiluna, Mt Keith, Leinster and Parkeston laterals have been granted exemptions from reporting requirements under Part 23 of the National Gas Rules.

Economic Regulation Authority Western Australia

1 January 2025

Revisions to the access arrangement for the 2025-29 regulatory period have commenced. Click here for more information.

The current Access Arrangement, including terms and conditions for the Reference Service, can be found here. It applies to covered capacity.

The Access Arrangement is supported by the Access Arrangement Information.

The approved Reference Tariff can be found here.

Further services, including variations to the Reference Service, and services involving uncovered capacity, may be available on the Goldfields Gas Pipeline by negotiation, subject to available capacity. Potential further services include:

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

A description of these non-reference services can be found on the gas transmission services page.

Relevant tariffs for these non-reference 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.

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 Report

Pilbara Pipeline System, Goldfields Gas Pipeline and Northern Goldfields Interconnect (Deed Poll)

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.

Metering and Measurement 

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

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.

Potential customers do not have to submit a Formal Access Request to gain access to non-scheme capacity on the Goldfields Gas 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]. Complete this User Access Request Form for the Goldfields Gas Pipeline, and this User Access Request Form for laterals connecting to the GGP.

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

Supplier Curtailment Methodology:

This Supplier Curtailment Methodology is established in accordance with Rule 101B(2)(f) of the National Gas Rules.

Conditions for Curtailment of Covered Gas Injected at Receipt Points:

For the Goldfields Gas Pipeline, the service provider may curtail the injection of covered gas at a receipt point if it fails to conform with the gas specification requirements.

For a more detailed overview of the gas specification requirements, please refer to: APA Group | Gas Specifications

Protocol for the Curtailment of Covered Gas Injected at Receipt Points:

For a more comprehensive overview of the curtailment process, please refer to Section 10 of APA Precedent SGTA | West Coast Grid Sample , which pertains to our West Coast Grid.