Low Pressure Mains Program

We're focused on maintaining a safe and reliable network so our customers can be gas ready during peak periods, such as winter. One of the ways we do this is by upgrading older gas mains.

Where are we upgrading gas mains?

Over the next 12 months, we’ll be replacing 74kms of older cast iron, PVC and galvanised low-pressure mains with new high-pressure polyethylene pipes (poly pipes).

From June 2024, our crews will be working in:

  • Viewpoint St, Ararat (replacing over 7kms of mains)
  • Aberdeen St, Geelong West (10.7kms)
  • Lynott St, Horsham (13.3kms)
  • Fisher St, Stawell (11.6kms)
  • Cramer St, Warrnambool (20.5kms)
  • High St, Ararat (10.6kms)

Why are we doing this?

At AusNet, we take safety seriously. Upgrading outdated sections of the gas network helps us manage any safety risks associated with older low-pressure networks. See Our safety commitment

Gas leaks and blockages, although rare, can also cause outages. High-pressure gas means better supply reliability and less chance of interruptions, especially during those chilly winter mornings!

We prioritise works in regions and towns with higher gas leakage rates.

How does it work?

We use a specific insertion method where the new poly pipes get inserted into the existing carrier pipes. This method means we don’t need to excavate footpaths, roads and vegetation when future maintenance and repairs are carried out.

We’re aiming to convert all of our low-pressure mains network to high pressure by 2028, which means upgrading over 273km of mains within the next 5 years.

Read more about the gas projects we’ve completed in Completed Projects.