The Hexham to Tomago Pipeline is a transmission pipeline on the central coast of NSW. The pipeline is owned by AGL.

The Hexham to Tomago Pipeline is 95 km in length. The pipeline ships gas from Jemena Gas Networks’ gas distribution network at Hexham to AGL’s Newcastle Storage Facility in Tomago.

The Hexham to Tomago Pipeline 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). They were previously subject to the access regime for non-scheme pipelines under the former Part 23 of the NGR, which was replaced by Part 10.

The AER has granted the following exemptions for the Hexham to Tomago Pipeline:

• On 3 January 2018, a five year Category 1 and Category 2 exemption under Part 23 of the NGR.
• On 30 November 2022, a five year Category 1 and Category 2 exemption under Part 23 of the NGR. Due to reforms to the NGR, the exemption transitioned to a Category 1 exemption under Part 10 of the NGR.