Home » About


Hunter Gas Pipeline

The Hunter Gas Pipeline (HGP) Pty Ltd is now a wholly owned subsidiary of Santos. The proposed underground pipeline route passes close to Santos’ Narrabri Gas Project (NGP). The goal is to work with infrastructure developers and landholders to construct a pipeline that will deliver much-needed gas to the east coast domestic market in the shortest timeframe possible.

The 833-kilometre pipeline already has planning approval from the NSW and Queensland governments. Once constructed, it will potentially connect the Wallumbilla Gas Supply Hub in Queensland to NSW, providing a second route to southern markets for Queensland gas and adding competition to the domestic market.

The HGP has been designed with offtake points at various regional towns along the route, and the corridor was selected to ensure minimum impact on communities, landowners, and the environment. The pipeline will also be designed to transport hydrogen as customer demand evolves during the energy transition.

Project facts

Km of underground pipeline


of Narrabri gas will go to domestic market

TJs/day of Narrabri gas delivered to power the community

construction jobs

Length Stage 1 – Commencement of early works
Stage 2 – Construction and operation of the Narrabri to Newcastle section of pipeline
Stage 3 – Construction and operation of the Wallumbilla to Narrabri section of the pipeline
Material Epoxy coated high strength steel line pipe
Size Nominally 20″ or ~508mm diameter
Depth Generally 900mm
Minimum 750mm
Maximum 1800mm
Design Strictly in accordance with the latest version of Australia Standard (AS) AS2885 Pipelines Gas and Liquid Petroleum.
Pipeline easement Nominally 30m wide


Santos is a global energy company with operations across Australia, Papua New Guinea, Timor-Leste and the United States. For 70 years, Santos has been working in partnership with local communities, providing jobs and business opportunities, safely developing natural gas resources and from there powering industries and households.

Narrabri Gas Project

Santos’ NSW assets include the Narrabri Gas Project (NGP), with 100 per cent of Narrabri gas committed to the domestic market. Locally, the project is expected to provide up to 1,300 jobs during construction and 200 ongoing local jobs and deliver significant economic benefits to the region.

Once fully operational, the NGP has the potential to deliver more than half of the natural gas that goes into the NSW market each day, ensuring people in NSW receive locally produced gas creating a more secure and affordable supply for families and businesses.

Project approvals

HGP has Development Approval from the NSW Government, the Queensland Government and the Federal Government.

NSW Government

Project approval under the Environmental Planning and Assessment Act 1979 was granted on 11 February 2009. An extension to project approval lapse date was approved on 17 October 2019, with the new lapse date now being 15 October 2024.

Queensland Government

HGP holds a pipeline licence from the Queensland Government.

Licence Number: PPL124
Environmental Authority: EPPG00611213
Date Granted 16/04/2007 (voluntarily suspended)

Federal Government

In December 2008, an Environment Protection and Biodiversity Conservation Act 1999 referral decision was made.