Kingsford to Randwick cable project

 An example of an underground cable project in construction

Ausgrid is planning to lay a new 132,000 volt underground cable and spare conduits between Kingsford and Randwick to replace existing cables that are nearing the end of their service life. 

Project need

Our substation in Randwick is serviced by 132,000 volt underground cables from substations in Waterloo and Double Bay. The cables from Waterloo are nearing the end of their service life and need to be replaced to maintain a reliable electricity supply to customers.

Ausgrid is planning to retire the Waterloo substation in the next few years so the new cables would be connected to our Kingsford substation. One new 132,000 volt cable will be installed and a set of spare ducts for a future second cable. We are planning to retire the existing cables from Double Bay in the mid-2020’s.

The project is part of a program to retire fluid filled cables across our network.

Planning cable projects

There are a number of considerations to factor in while planning cable routes. These include:

  • community impacts
  • availability of space around existing utility services
  • environmental and heritage impacts
  • cost (minimising the impact on electricity bills)
  • technical feasibility
  • traffic impacts.

Project status


Project approval process

Under the Environmental Planning and Assessment Act 1979, Ausgrid is the nominated determining authority for assessing and approving works for the Kingsford to Randwick cable project. 

As part of this process, an environmental assessment (known as a Review of Environmental Factors or REF) will be prepared. The REF will investigate the potential environmental impacts associated with the construction and operation of the new cables and will include a range of specialist studies and feedback from the community, councils and other authorities.

The REF is being prepared and is expected to be on public exhibition in mid-2018. Community feedback will be considered prior to the project being assessed for construction approval.

Community engagement

Ausgrid started engaging with key stakeholders, such as Randwick City Council earlier this year to obtain early feedback on the preferred cable route.
Engagement with residents and businesses along and around the preferred cable route started in late March 2018 when the first project newsletter was distributed. A copy of the newsletter can be found on the right hand side of this page. 

Ausgrid is seeking input from the community on the preferred cable route.  Community feedback will help inform the planning process and will also help us mitigate or avoid impacts during construction.

 

Ausgrid is holding two information sessions about the project, see details below:


Community information session 1

Date: Thursday 5 April, 2018

Venue: The Juniors Kingsford, level 2 meeting room, 558A Anzac Parade, Kingsford

Time: 6pm to 8pm (presentation from 6.15pm)

 

Community information session 2

Date:  Tuesday 10 April, 2018

Venue: The Randwick Club, Terrace Room, 135 Alison Road, Randwick

Time: 6pm to 8pm (presentation from 6.15pm)

 

There is no need to book, just drop in. At the beginning of each session, members of the project team will give a short presentation on why the project is needed and what to expect during construction. A copy of the presentation will be posted on this page after the information sessions. Please contact us if you can't attend the sessions and want more information.

We will continue to engage with the community and stakeholders during each stage of the project.  Ausgrid welcomes questions or comments about the project at any time (see project contacts top right). Community feedback assists us to identify potential issues and address them in our construction plans to minimise impacts.

Construction

This project would involve installing the new 132,000 volt cable and spare conduits through streets in Randwick and Kingsford. Retiring the existing cables between our substations in Waterloo and Randwick would involve some work at various locations along that cable route and at the substations themselves.
As with any construction work, there would be some noise and dust, and temporary traffic, access and parking disruptions, but we would make every effort to keep these to a minimum.

Click here to view an information graphic showing the different stages of cable laying.

Work to install the new cables would generally include:

 
  • digging trenches in roads to lay conduits (plastic pipes) to accommodate the new cables
  • backfilling trenches and temporary resurfacing of impacted areas (trenching and temporary resurfacing takes about three days outside each property depending on ground and weather conditions)
  • excavating underground joint bays at various locations along the cable route
  • feeding in and joining sections of cable at the joint bay locations permanently restoring impacted areas, in consultation with Council once the overall project is complete.

The project would also involve horizontal drilling (boring) under Alison Road in Randwick, at the St Marks Road intersection. 

Work to retire the existing 132,000 volt cables from Waterloo would involve:

  • Excavating existing joint bays along the cable route
  • Removing cable equipment
  • Disconnecting the cables.