EO1 is a transmission pipeline located in central Queensland. The pipeline is owned by the Queensland Gas Company (QGC).

The EO1 pipeline connects the Windibri central processing plant (CPP) with the Roma to Brisbane Pipeline (RBP).

EO1 is currently a non-scheme pipeline, and is subject to the access regime for non-scheme pipelines under Part 10 of the National Gas Rules (NGR). It was previously subject to the access regime for non-scheme pipelines under the former Part 23 of the NGR, which was replaced by Part 10.

On 30 November 2022, the AER granted a five year Category 1 and Category 2 exemption under Part 23 of the NGR for the EO1 pipeline. Due to reforms to the NGR, the exemptions transitioned to a Category 1 exemption under Part 10 of the NGR.