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Home/Deal Room/NEXTDC S7 shows 612 MW Sydney Stargate plan

Data centers · Evidence brief

NEXTDC S7 shows 612 MW Sydney Stargate plan

NEXTDC + OpenAI + New South Wales Department of Planning

Primary sourcePermit / utility filing2026-07-02
Deal structureState Significant Development planning-stage AI data-center campus / OpenAI infrastructure MoU
GeographyEastern Creek, Western Sydney, New South Wales, Australia
Infrastructure layersData centers + cloud capacity + cooling
Disclosed scaleOfficial New South Wales planning portal entry for NEXTDC S7 describes a 612 MW operational-capacity data center in Eastern Creek with three two-storey data storage buildings, 340 backup diesel generators and an onsite substation; NEXTDC and OpenAI signed an MoU for a hyperscale AI campus and large-scale GPU supercluster at S7, while DCD reported earlier S7 project framing around AU$7B / US$4.5B and July 2026 planning documents tying the campus to Australian Stargate

Why it matters

The strategic read

Adds an official planning-stage receipt for OpenAI-linked sovereign AI infrastructure in Australia. The scarce inputs are bundled together: a 612 MW Sydney campus application, onsite substation, liquid-cooling design language from NEXTDC, a hyperscale GPU-supercluster MoU with OpenAI, and State Significant Development review under New South Wales rather than only local approval. It expands the Australia lane beside Energy North, Firmus, SharonAI, IREN and CDC, showing the country becoming a repeat geography for AI-factory siting, power, cooling and sovereign-cloud execution.

Source-supported terms

What was disclosed

  1. 01

    The New South Wales Planning Portal lists NEXTDC S7 Data Centre, Eastern Creek as State Significant Development application SSD-113934740 in the Prepare EIS stage.

  2. 02

    The official project description says the proposal covers construction and operation of a data centre with operational capacity of 612 MW.

  3. 03

    The official project description says the campus comprises three two-storey data storage buildings, 340 backup diesel generators, diesel fuel storage, an onsite substation, site works and car parking.

  4. 04

    The project is in the Blacktown local government area and is being assessed by the New South Wales planning system as State Significant Development.

  5. 05

    NEXTDC announced in December 2025 that it agreed a Memorandum of Understanding with OpenAI, enabling Australia to become a regional infrastructure partner under OpenAI for Countries.

  6. 06

    NEXTDC said OpenAI and NEXTDC will collaborate on planning, development and operation of a next-generation hyperscale AI campus and large-scale GPU supercluster at NEXTDC's S7 site in Eastern Creek, Sydney.

  7. 07

    NEXTDC described S7 as a sovereign AI facility aligned to Australia's SOCI framework and engineered for closed-loop high-density liquid cooling for ultra-high-density GPU clusters.

  8. 08

    NEXTDC said the cooling systems will not require ongoing potable drinking water for cooling operations.

  9. 09

    NEXTDC said the first S7 phase is expected to be delivered in the second half of calendar 2027, subject to necessary approvals.

  10. 10

    NEXTDC's S7 site page lists S7 Eastern Creek as a future 550+ MW Sydney data center.

  11. 11

    DCD reported on July 2, 2026 that Australian Stargate data center planning documents show 612 MW of capacity and that OpenAI Stargate is planned as a customer.

  12. 12

    DCD reported the proposal is currently preparing an Environmental Impact Statement and shows nine data-center buildings across three blocks plus a substation.

  13. 13

    DCD previously reported the Eastern Creek S7 site as an AU$7B / US$4.5B project site with up to 550 MW at full build-out when covering the OpenAI / NEXTDC MoU.

  14. 14

    DCD reported NEXTDC acquired the roughly 255,000 square meter Eastern Creek parcel for AU$353M in October 2024.

Disclosure boundary

What is known—and what is not

Primary NSW Planning Portal project record and NEXTDC ASX/news release, with DCD same-day and prior reporting. Public materials disclose the S7 project name, Eastern Creek / Western Sydney location, State Significant Development status, Prepare EIS stage, 612 MW operational-capacity planning description, three data-storage buildings, 340 backup diesel generators, onsite substation, NEXTDC / OpenAI MoU, hyperscale AI campus and GPU-supercluster language, sovereign-AI / SOCI framing, closed-loop liquid-cooling design, no ongoing potable drinking water for cooling operations, subject-to-approvals first-phase timing in second-half 2027, earlier 550+ MW NEXTDC site framing, DCD-reported AU$7B / US$4.5B project context and AU$353M land acquisition. Public materials do not disclose a binding OpenAI lease or cloud-services contract, final offtake amount, final investment decision, total financed capex, debt/equity sources, power procurement, grid connection terms, diesel runtime limits, generator vendor, liquid-cooling vendors, EPC package, GPU counts, final EIS, planning approval, construction-start date, phase-by-phase MW schedule, customer remedies, termination rights or whether every future capacity phase is binding today.