Ausgrid has replaced 132,000 volt transmission cables between Earlwood and Matraville (Canterbury and Bunnerong subtransmission substations) with two new 132,000 Volt cables from Kurnell, including a submarine cable crossing of Botany Bay. The project also included associated substation works at the Kurnell and Bunnerong substations.
The cables have now been laid and most work at the substations now complete. Remaining activities at the Kurnell substation are to decommission the old equipment.
Ausgrid's application to construct the Botany Bay Cable Project was approved by the NSW Minister for Planning on 19th December 2007, under section 75J of the Environmental Planning and Assessment Act 1979.