The South East Australia Gas Pipeline System (SEA Gas) comprises a system of transmission pipelines that transport natural gas from Port Campbell and Iona in Victoria to a variety of offtakes and interconnected pipelines in South Australia and Victoria. SEA Gas delivers around 50 per cent of Adelaide’s natural gas demand.

SEA Gas is primarily comprised of three pipelines:

  • The Port Campbell to Adelaide (PCA) mainline, including the WUGS lateral, is approximately 680km in length. The PCA connects Port Campbell in SW Victoria to Pelican Point in South Australia. The WUGS lateral connects the PCA to the Iona Gas Plant and the Otway Gas Production Facility.
  • The Port Campbell to Iona lateral pipeline (PCI) is approximately 11km long and traverses the Minerva gas plant and the Victorian Declared Transmission System, where it connects to the South West Pipeline. It also connects to the Otway Gas Production Facility and the Mortlake Pipeline.
  • The Mortlake Pipeline is approximately 83km long and delivers gas from the PCI to Mortlake Power Station.

SEA Gas is also connected to the South East South Australia (SESA) pipeline in SA, and the Moomba to Adelaide Pipeline System (MAPS). The gas transported by SEA Gas is sourced from the offshore Otway basin gas fields near Port Campbell and the Underground Gas Storage (UGS) facility at Iona.

SEA Gas owns and operates the SEA Gas Pipeline System. The SEA Gas business is jointly owned by APA Group (50 per cent) and REST (Retail Employees Superannuation Trust) (50 per cent).

SEA Gas is a non-scheme pipeline under Part 23 of the National Gas Rules.

General information about the SEA Gas Pipeline System.

Commercial contact information
Contact the Head of Commercial on 08 8236 6800 or via email.

Information categories

Pipeline Schematic
Standing prices
Scroll down to NGR Part 23 – Service Listing on the linked page.
Service usage information (monthly)
Capacity outlook next 12 to 36 months
Financial information
Weighted average price information
There is a Weighted Average Prices table (Tab 5) in each Reporting Template attached to the linked page.
User access guide
Scroll down to end of NGR Part 23 – Service Listing section of the linked page. Link to User Access Guide provided.
Standard OTSA for each Part 24 facility
Scroll down to NGR Part 24 – Standard OTSA heading on linked page.