On 10 February 2026, we published a final decision for the Roma North (Mimas) Gas Pipeline (RNMGP) classification.
We have decided to classify the RNMGP as a transmission pipeline following stakeholder consultation on the draft decision in January and February 2026. We did not receive written submissions on the draft decision.
Background
All scheme and non-scheme pipelines must be either classified as a transmission or distribution pipeline.
Following reforms to the gas pipeline regulatory framework in 2023, the AER is responsible for determining the classification of pipelines which are not yet classified and for making decisions about the reclassification of pipelines.
Under section 117 of the National Gas Law, pipeline service providers are required to make a classification application to the AER within 20 business days after the commissioning of a pipeline, which is not yet classified as a distribution or transmission pipeline.
More information on the AER’s classification and reclassification powers can be found in Chapter 6 of the AER’s Regulatory Determinations and Elections Guide.