Transgrid has published the Project Assessment Conclusions Report (PACR) for Maintaining reliable supply to North West Sydney. Publication of this PACR represents the last step in the RIT-T process and follows the Project Specification Consultation Report (PSCR) published in February 2025.
The Vineyard Precinct is part of the North West Priority Growth Area, an area identified by the NSW Government for new development. Stage 1 of the Vineyard area was rezoned in December 2017 and essential infrastructure such as roads, sewage and distribution infrastructure (provided by Endeavour Energy) has been delivered. Vineyard Precinct is now growing rapidly in line with the Stage 1 growth targets of 2,300 new homes and 7,000 residents.
Our power system studies show that this new development is resulting in rapid load growth to the area supplied by Transgrid’s Vineyard 330/132 kV Bulk Supply Point (BSP). This load growth is forecast to cause the reactive margin at Vineyard BSP to drop to below one percent of the maximum fault level at the Vineyard 330 kV and 132 kV busbars.
Transgrid published a PSCR for maintaining reliable supply to North West Sydney in February 2025. In the PSCR Transgrid presented two credible network options that would meet the identified need from a technical, commercial, and project delivery perspective.
No submissions received in response to the PSCR and no additional credible options have been identified.
The assessment in this PACR finds that Option 1 (Loop-in Line 26 to Vineyard BSP) remains the preferred option to meet the identified need. The estimated capital cost of Option 1 is $51m (2024-25).
In accordance with the requirements of the Rules, a summary of the Project Assessment Conclusions Report is made available on the AEMO website. A copy of the PACR can be obtained from Transgrid’s website or by emailing [email protected].