Mid West Pipeline



The 353-kilometre Mid West Pipeline (MWP) and 11-kilometre Mt Magnet Pipeline (MMP) are transmission pipelines that transport gas from the Dampier to Bunbury Natural Gas Pipeline near Geraldton (Eradu Road) to power generation for power providers and mining customers.

A diagram of the MWP and MMP 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.
APA Ownership


Regulatory Status

The MWP and MMP are non-scheme pipelines.

Both pipelines have been granted a category 3 exemption (average throughput less than 10TJ/day) from aspects of Part 23 information disclosure.

Capacity and Services

The following standard services are offered on the MWP and MMP, 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 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.

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.

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 MWP and MMP are prescribed clause 1 pipelines under the West Australia Gas Supply (Gas Quality Specifications) Regulations 2010. The reference specifications for the MWP and MMP are set out in clause 1 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.


The MWP is currently being managed by an Independent Manager Mark Cooper. If you are interested in acquiring gas transmission services for this pipeline, you can contact Mark Cooper on 0417 809 027 to discuss your requirements. Alternatively, you may wish to make an enquiry by emailing Mark at [email protected].

We encourage potential customers to contact Mark Cooper early when considering their gas supply and transport needs. Early discussion of needs improves the likelihood that services can be tailored 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 make contact 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 Details are in APA's User Access Guide.

You can make a Formal Access Request by completing in-full the relevant User Access Request Form for this pipeline and emailing it to [email protected].