Wolli Creek Substation and T8 Airport Line Power Supply Upgrade

Image of Wolli Creek Station platform showing a train pulling into the station

Program overview

Over the next ten years the More Trains, More Services program will simplify and modernise the rail network, creating turn up and go services for many customers. The current stage of the program will deliver improvements for the T4 Eastern Suburbs & Illawarra Line, South Coast Line and T8 Airport & South Line customers.

What are we doing at Wolli Creek and on the T8 Airport Line?

Upgrading the power supply will support the introduction of the new fleet of trains operating along the T8 Airport Line. It will also future-proof the connection to the Sydney Trains network, allowing more trains and services to be available to customers.

Upgrades to the power supply are along the T8 Airport Line tunnel from Central to Wolli Creek Junction.

Wolli Creek substation upgrades

  • construction of a new substation at Wolli Creek Junction
  • decommissioning the Undercliffe Substation and Wolli Creek Sectioning Hut
  • upgrading an access way to the new substation and truck turning bay at the northern end of Lusty Street.

T8 Line infrastructure upgrades

  • installation and modification of new power supply cables throughout the T8 Line Airport tunnel from the Chalmers Street substation through to Green Square, Mascot and Wolli Creek stations.
  • installation of a new power supply cable between Chalmers Street Substation and the Rail Operations Centre at Green Square
  • 6km of upgraded overhead wiring in T8 Line Airport tunnel
  • signalling system upgrades in T8 Line Airport tunnel.

Project update

A Review of Environmental Factors (REF) was prepared and community feedback was invited during public consultation from 27 November to 11 December 2019. We would like to thank the community for their feedback which was taken into consideration as part of the planning approval process. All submissions received have been responded to in the Determination Report which outlines the issues raised and the conditions of approval which must be adhered to by the project.

Next steps

The construction work contract has been awarded and construction will start in late 2020. We will advise the community prior to the commencement of this construction.

Every effort will be made to minimise any construction impacts on the local community and we will continue to keep the community informed about upcoming activities through regular updates.

Program overview

Over the next ten years the More Trains, More Services program will simplify and modernise the rail network, creating turn up and go services for many customers. The current stage of the program will deliver improvements for the T4 Eastern Suburbs & Illawarra Line, South Coast Line and T8 Airport & South Line customers.

What are we doing at Wolli Creek and on the T8 Airport Line?

Upgrading the power supply will support the introduction of the new fleet of trains operating along the T8 Airport Line. It will also future-proof the connection to the Sydney Trains network, allowing more trains and services to be available to customers.

Upgrades to the power supply are along the T8 Airport Line tunnel from Central to Wolli Creek Junction.

Wolli Creek substation upgrades

  • construction of a new substation at Wolli Creek Junction
  • decommissioning the Undercliffe Substation and Wolli Creek Sectioning Hut
  • upgrading an access way to the new substation and truck turning bay at the northern end of Lusty Street.

T8 Line infrastructure upgrades

  • installation and modification of new power supply cables throughout the T8 Line Airport tunnel from the Chalmers Street substation through to Green Square, Mascot and Wolli Creek stations.
  • installation of a new power supply cable between Chalmers Street Substation and the Rail Operations Centre at Green Square
  • 6km of upgraded overhead wiring in T8 Line Airport tunnel
  • signalling system upgrades in T8 Line Airport tunnel.

Project update

A Review of Environmental Factors (REF) was prepared and community feedback was invited during public consultation from 27 November to 11 December 2019. We would like to thank the community for their feedback which was taken into consideration as part of the planning approval process. All submissions received have been responded to in the Determination Report which outlines the issues raised and the conditions of approval which must be adhered to by the project.

Next steps

The construction work contract has been awarded and construction will start in late 2020. We will advise the community prior to the commencement of this construction.

Every effort will be made to minimise any construction impacts on the local community and we will continue to keep the community informed about upcoming activities through regular updates.