Western Sydney Supply Project

The Western Sydney Supply Project (WSSP) is part of TransGrid’s plan to secure Sydney’s power supply for the future. 

The project was necessary to ensure a continued reliable supply of electricity to the city and the greater Sydney area.

The WSSP included:

  • Construction of a new Holroyd Substation at Greystanes
  • An upgrade to the existing overhead transmission line between Sydney West
  • Substation at Eastern Creek and the new Holroyd Substation
  • Construction of the new Rookwood Road Substation at Potts Hill
  • Construction of a new underground electricity cable between the two new substations.