NEXTDC S4 Sydney
NEXTDC S4 is a data centre project at 16 Johnston Crescent, Horsley Park. The approved development includes a 294 MW power-consumption scope and two 330 kV underground circuits to Sydney West. Multiplex reports construction in progress.
Horsley Park, New South Wales, Australia
Evidence reviewed 5 Nov 2026
About NEXTDC S4 Sydney
NEXTDC Limited is developing NEXTDC S4 Sydney at 16 Johnston Crescent, Horsley Park, NSW. Multiplex identifies the project as under construction and lists 2027 as its target completion year. The published timetable refers to construction completion.
The NSW development consent for SSD-63741210, issued on 24 December 2025, covers a data centre with 294 MW of approved power consumption, electrical substations and associated infrastructure. The consent also covers the supporting electrical infrastructure.
How S4 is proposed to connect to the grid
The planning assessment describes a proposed connection to Sydney West Bulk Supply Point (BSP) using 2 underground 330 kV circuits. The planning documents describe an approximately 2.6 km cable route between the two sites.
Sydney West is identified as a bulk supply point for Endeavour Energy. The assessment includes two additional switching bays at the existing substation.
- Address
- 16 Johnston Crescent, Horsley Park NSW 2175
- Country
- Australia
- State / region
- New South Wales
- Developer
- NEXTDC Limited
- Planning reference
- SSD-63741210
- Proposed network connection
- Sydney West Transmission Substation
- Network route
- Approximately 2.6 km, as documented
Electrical work and project outlook
Probability not assessed. Builder, electrical contractor and current procurement availability are not confirmed in the published research.
Review the original sources below for the reported operator, project status and electricity infrastructure. A listed facility does not imply an open tender.
Documented proposed connection
Location and nearby places
Nearby Bulk Supply Points and substations
67 records within 15 km.
Show 62 more
Nearby mine sites
No mine records within 15 km.
Sources and dates
Research compiled by Elora Grid.
- 01NSW development consent
24 December 2025 · Schedule 1 · approval, address and 294 MW scope.
- 02HV route supplementary assessment
Aurecon revision D · 20 August 2025 · sections 2.1, 5.1 and 5.5.
- 03Multiplex project page
Undated participant page · construction status and target completion.
- 04Official application contact details
3 September 2025 · Applicant Details. Contacts may have changed.
- 05Original source
2026-10-21
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- 17Multiplex — NEXTDC S4 Sydney
Primary source reviewed 2026-11-05
Data notes
Distances use published location points. Nearby records may represent separate phases of one facility. Connection capacity and commissioning require current network information.