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 Rail 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 is proposed along the T8 Airport Line tunnel from Central to Wolli Creek Junction.

Wolli Creek substation upgrades

  • a new substation at Wolli Creek Junction
  • decommissioning of 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 invited from 27 November to 11 December 2019. We would like to thank the community for their feedback, which will help further develop the project.

Next steps

Feedback received in response to the REF will be considered in a Determination Report. The report will be prepared by Transport for NSW and we will let the community know as soon as it is available to view.

Construction will only start once all approvals have been finalised and a determination on the Project has been made by Transport for NSW.

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 Rail 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 is proposed along the T8 Airport Line tunnel from Central to Wolli Creek Junction.

Wolli Creek substation upgrades

  • a new substation at Wolli Creek Junction
  • decommissioning of 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 invited from 27 November to 11 December 2019. We would like to thank the community for their feedback, which will help further develop the project.

Next steps

Feedback received in response to the REF will be considered in a Determination Report. The report will be prepared by Transport for NSW and we will let the community know as soon as it is available to view.

Construction will only start once all approvals have been finalised and a determination on the Project has been made by Transport for NSW.