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AirTrunk SYD3 Western Sydney Data Center Campus

Western Sydney, New South Wales, AustraliaUnder construction
Evidence
Planned critical IT
400 MW
Updated
Oct 28, 2026

On October 27, 2026, AirTrunk announced an A$4.25 billion green loan for continued SYD3 development. Contractor reporting also confirms expanded construction with completion forecast for mid-2028; financing and construction do not establish that the campus's full planned capacity is operating. AirTrunk is developing SYD3 as a 400-plus-MW hyperscale campus in Western Sydney. The nine-phase site remains under construction and is designed to extend the company's connected Western Sydney platform. AirTrunk is publicly identified in the project record for Western Sydney, NSW, AU. The disclosed development record includes more than 400 MW planned campus capacity; approximately 20.5 acres; 42 data halls; dedicated 132 kV high-voltage feed. Power and infrastructure include nine-phase campus with an onsite 132 kV substation and shared regional connectivity to SYD1. AirTrunk currently describes SYD3 as a 400-plus-MW hyperscale campus at full development.

Capacity

Reported capacity

Design

400 MW

Source

Operating IT capacity: Not established in published records

A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.

Development

Construction programUnder construction

Project-wide phase for AirTrunk SYD3 Western Sydney Data Center Campus; capacity remains classified as it load.

Milestones (2)
AirTrunk SYD3 project status and capacity disclosed

Nov 4, 2021 · Recorded actual event

Completed · Announced

Source not linked
Under development as a multi-phase hyperscale campus

Date not disclosed · Forecast / planned record

Forecast · Forecast completion

Source not linked

Participants

AirTrunk

Developer

Sources by role
Developer (1)

Site & development

Location context

Actual

SYD3 campus | Western Sydney | New South Wales

Source

Development scale

Actual

More than 400 MW planned campus capacity

Source

Development milestone

Actual

Approximately 20.5 acres

Source

Site configuration

Actual

Dedicated 132 kV high voltage feed.

Source

Technical specifications

Power arrangement

Actual

42 Data halls

Source

Additional project facts

Lifecycle status

Actual

Construction

Source

Capacity basis

Actual

AirTrunk currently describes SYD3 as a 400-plus-MW hyperscale campus at full development.

Source

Infrastructure & permits

Technical details (2)
Electric grid

Planned or represented

400 MW

AirTrunk currently describes SYD3 as a 400-plus-MW hyperscale campus at full development.

Site facility

Planned or represented

Nine-phase campus with an onsite 132 kV substation and shared regional connectivity to SYD1.

Public-source research. Plans may change. See Evidence for sources and qualifications.

Related projects (2)
AirTrunk SYD1 Western Sydney Data Center Campus

Partially operational · Western Sydney, New South Wales, Australia

Same locality: Western Sydney · Shared participant: AirTrunk

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AirTrunk SYD2 Sydney North Data Center Campus

Partially operational · Sydney, New South Wales, Australia

Shared participant: AirTrunk · Same market: New South Wales, Australia

Compare in a collection