NEXTDC S3 Artarmon

Artarmon, New South Wales, AustraliaPartially operational

Planned critical IT: 80 MW
Updated: Oct 29, 2026

NEXTDC S3 is an operating data centre with continuing expansion at 2 Broadcast Way, Artarmon, New South Wales. Its published target is 80 MW of IT capacity, not a measurement of current operating load. Planning approval was reported in December 2019, and stage one opened in September 2022. FY26 results released on August 27, 2026 report 68 MW built and 12 MW in progress, with 16 MW delivered during FY26. Built means fitted-out hall design power, not occupancy or metered IT load; 16 MW is not additional to 68 MW. Earlier first-half progress remains historical. The operator describes whole-site UPS backup, resilient cooling and diverse fibre links to S1 and S2. S3 is separate from S6 across the road. Project-specific debt, the latest approval variations and a current occupied-capacity measurement were not established.

Capacity

Target IT capacity MW

Planned / design or future potential

80 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

Milestones (4)

Planning approval received in December 2019

Dec 2019 · Recorded actual event

Completed · Announced

Sources (1)

NEXTDC FY20 Half-Year Results · Primary

Stage one opened in September 2022

Sep 2022 · Recorded actual event

Completed · Announced

Sources (1)

Our History · Primary

Investor presentation reported ongoing S3 fit-out; not a current occupied-capacity measurement

Apr 20, 2026 · Recorded actual event

Completed · Announced

Sources (1)

Record Contracted Utilisation and A$2.2bn Capital Plan · Apr 20, 2026 · Primary

FY26 results report S3 fit-out progress

Aug 27, 2026 · Recorded actual event

Issuer reports 68 MW built and 12 MW in progress, with 16 MW delivered during FY26; built denotes fitted-out hall design power, not measured operating load. The 16 MW delivery figure must not be added to the 68 MW built total.

Completed · Announced

Sources (1)

NEXTDC FY26 results presentation, August 27, 2026 · Aug 27, 2026 · Primary

Participants

NEXTDC Limited

Developer · Operator

Sources by role

Developer / Operator (1)

Record Contracted Utilisation and A$2.2bn Capital Plan · Apr 20, 2026 · Primary

Capital & incentives

Capital claims

Land and site control context

Reported rounded

Issuer reported S3 land held for development carrying value of A$93 million at December 31, 2019. Not a current valuation or total project investment.

Source

Site & development

Site location

Reported rounded

2 Broadcast Way, Artarmon, New South Wales 2064, Australia. S6 across the road is separate.

Source

Additional project facts

Fy26 s3 fitout progress context

Reported rounded

NEXTDC FY26 results released August 27, 2026 report S3 at approximately 80 MW planned, 68 MW built and 12 MW in progress. Built means designed power of fitted out data halls; further customer specific infrastructure may still be required. These are issuer reported hall fit out metrics, not occupied, billed or metered IT load. S6 is a different facility.

Source

Fy26 s3 delivery context

Reported rounded

NEXTDC reports 16 MW delivered at S3 during FY26. This is a period progress measure, not a day specific commissioning or occupancy statement. The FY26 delivery figure must not be added to the reported built capacity total.

Source

Infrastructure & permits

Technical details (5)

Electric grid

Reported context

2.7 MW Piller rotary UPS modules with MTU engines, whole-site UPS backup including mechanical systems, and minimum 24-hour on-site fuel. Module size is not site load.

Cooling system

Reported context

Hot-aisle containment, Vertiv indirect free-cooling CRACs, modular cooling towers, N+1 independent cooling and minimum 24-hour water storage. Conflicting PUE figures across pages omitted.

Fiber

Reported context

Dual geodiverse managed and dark-fibre interconnects to S1 and S2; cloud connections are connectivity options, not evidence of tenants.

Water supply

Planned or represented

Minimum 24-hour on-site water storage in operator specification; not a water-right allocation or annual usage figure.

Onsite generation

Planned or represented

MTU backup engines with at least 24 hours of on-site fuel; module rating is not campus IT capacity.

Other · Documented

NEXTDC S3 Artarmon

Sources (1)

NEXTDC FY20 Half-Year Results · Primary

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

Related projects (1)

NEXTDC S7 Sydney

Preconstruction · Eastern Creek / Blacktown, New South Wales, Australia

Shared participant: NEXTDC Limited · Same market: New South Wales, Australia

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