Bradfield North 132 kV Feeders
Trenching and duct installation for two underground 132kV feeders connecting Endeavour Energy's North Bradfield zone substation in Western Sydney.
Project overview
The North Bradfield zone substation supplies the growing Bradfield area of the Western Sydney Aerotropolis. Two underground 132kV feeders connect to the new substation, with the route running mostly beneath public roads.
Flomar delivered the underground civil works as a subcontractor between late 2024 and October 2025. The work included trenching and duct installation for the two 132kV feeders and the 22kV ducts in the Endeavour Energy easement, with backfill, testing and reinstatement. Selected shale crossings were completed with a specialist bed-bore partner.
Flomar's scope of works
- Non-destructive vacuum potholing to prove existing services
- Saw-cutting and removal of road pavement and subbase
- Trenching for the 132kV feeders, including shoring, trench stability reporting and temporary works
- Stabilised sand, concrete, thermally stable backfill, DGB20 and temporary asphalt
- Installation of power and communications conduits, spacers, cover strips, warning tape and markers
- Concrete encasement of existing service crossings
- Cable access holes with concrete base slabs and continuous conduits
- Bed bores in shale at selected crossings, with a specialist partner
- Trenching and duct installation for the 22kV and off-road 132kV sections within the easement
- Fibre pits and mandrel proving of conduits between joint bays
- Spoil tracking, compaction and thermal resistivity testing, and quality handover records
- Permanent reinstatement of grassed areas
Scope highlights
- Two 132kV feeder civil routes
- 22kV duct route within the easement
- Shale crossings with a specialist bed-bore partner
- Service proving and concrete protection at crossings
- Compaction and thermal resistivity testing
- Fibre pits and mandrel proving between joint bays
Project register
Value bands cover Flomar's own package only, never the whole-project figure, and are provided on request.
Project context
Working out who to put on your next tender?
Tell us the civil and electrical-enabling scope. We will tell you plainly what we self-perform and where we partner.
(02) 9550 0658