Replacement submarine cable off Cronulla

May 30, 2018

Ausgrid is carrying out offshore testing to help identify the best option to replace an existing 11,000 volt submarine cable under Port Hacking River between Cronulla and Bundeena in Sydney’s south.

Chief Operating Officer Trevor Armstrong said the cable is 55 years old. “This section of cable was commissioned back in 1963 and needs to be replaced as it has reached the end of its working life. “Replacing it will help improve reliability for residents in the area.

“Geotechnical contractors have completed an initial assessment and will now be carrying out offshore tests on the strength of the rock under the Port Hacking River’, Mr Armstrong said.

Residents may notice a barge operating in the Port Hacking River between Wednesday 30 May and Friday 22 June. It will be working between Bass and Flinders Point and the Bundeena Ferry Wharf.

Contractors will be testing rock under the river using a drilling rig on the barge. The work will be carried out between 7am and 7pm depending on weather conditions. It will require two five-day periods to complete. There will be minimal impacts to vessels navigating the river.