Quantum DC has paused the planning approvals programme for its proposed Tungkillo Compute and Energy Hub, a hyperscale data centre of approximately 1,200 MW about 55 kilometres east of Adelaide, the developer said on its project page on 12 November. It says it will not apply for Crown Sponsorship or lodge a development application this year, after more than 350 people contacted it and community members compiled 432 questions.
By our arithmetic, the paused hub is about 13 times the size of the 90 MW Project Mars data centre that Goodman Group withdrew in Sydney’s Lane Cove in September. Bloomberg ran the news under the headline “Another Data Center Halts in Australia as Public Backlash Rises”; only its headline was readable.
Business Pill · Grid Cost Allocation
An evergreen Business Engineer explainer on who pays when new grid capacity is built for large loads such as data centres. It teaches the general idea only and does not discuss Quantum DC or Tungkillo.
The key insight: Quantum DC says it has paused the planning approvals programme for its approximately 1,200 MW Tungkillo hub near Adelaide and will not apply for Crown Sponsorship or lodge a development application this year; by our arithmetic the hub is about 13 times the 90 MW Project Mars that Goodman withdrew in Sydney in September.
The company wrote: “We misread the strength of feeling about this proposal, and we acknowledge that the first weeks of our early engagement created more questions than answers.” It cancelled the community information sessions set for 20 and 21 November at the Mannum Leisure Centre.
A longer-term engagement programme will replace them, the page says, with the offer of a Community Advisory Group. The company also intends to convene a panel of experts independent of the company to review its specialist studies, and says the panel’s findings will be made public.
Chief executive Alby Tomassi told ABC News the company had not ruled out progressing the project in the future. The page says no development application has been lodged and nothing has been approved.
Australian data-centre setbacks in FourWeekMBA coverage, 28 September to 12 November 2026, with circle area proportional to the stated capacity: Goodman’s 90 MW Project Mars (BBC), Jemena’s suspension of NEXTDC’s M3 power works, Stockland’s Cooks River data centre (ABC News) and Quantum DC’s approximately 1,200 MW Tungkillo hub (Quantum DC). The count and the 13.3x ratio are our arithmetic; it covers only stories we reported.
The Proposal
The page describes the hub at 312 Collins Road, Tungkillo, as a hyperscale data centre with on-site gas-fired generation, two new substations and a connection to the existing ElectraNet 275 kV transmission line that crosses the site. It would be delivered in three stages.
The company says the project is designed so that wind and solar supply around 80% of the electricity the data centre uses, with on-site gas supplying around 20%. It gives water demand of around 20 megalitres a year once fully operational, using closed-loop, direct-to-chip liquid cooling.
About 120 hectares of the 220-hectare site would be developed, about 55% by our arithmetic; the rest would stay in grazing. The Australian Financial Review described the project as 1.2 gigawatts.
The Objections
The page lists the concerns it has heard, among them water use and supply, the proposed on-site gas generation, farming land, the River Murray International Dark Sky Reserve, noise, traffic, bushfire risk and Aboriginal cultural heritage.
Mid Murray Council Mayor Simone Bailey told ABC News the council had “big concerns” about the location, its proximity to the dark sky reserve, the distance from a Country Fire Service station, access on unsealed roads, noise and the water table.
South Australian Premier Peter Malinauskas told ABC News the state needed “a strong and strict regulatory framework to ensure that data centres aren’t being built, or even being proposed, in places they shouldn’t be.”
Our Numbers
By our count of our own coverage, Tungkillo is the fourth Australian data-centre setback in 45 days. Goodman withdrew the A$1.2 billion, 90 MW Project Mars in Lane Cove on 28 September, the BBC reported. On 21 October NEXTDC said Jemena had suspended power works for its M3 Melbourne campus.
On 8 November ABC News reported that Stockland and John Boyd Properties had dropped the data centre from their A$3.5 billion Cooks River plan. Where a capacity was given, the two withdrawn or paused projects add up to 1,290 MW, by our arithmetic; no figure was given for Cooks River.
As we read the page, the developer has not withdrawn the proposal: it describes a reset of how the project is tested, with an independent expert panel and a Community Advisory Group, and says nothing in the design is off the table.
As we read our own coverage, the Australian setbacks since September have come through different gates: a withdrawn application in Lane Cove, suspended power works at M3, a dropped data centre at Cooks River, and now a paused approvals programme at Tungkillo.
Quantum DC, Tungkillo project page, 12 November 2026
“We misread the strength of feeling about this proposal, and we acknowledge that the first weeks of our early engagement created more questions than answers.”
Three Implications
FOR THE DEVELOPER Quantum DC says it will not apply for Crown Sponsorship or lodge a development application this year, and the 20 and 21 November sessions are cancelled.
FOR THE STATE Premier Peter Malinauskas told ABC News the state needed a strict regulatory framework for where data centres are built or proposed.
FOR THE COUNT By our count, Tungkillo is the fourth Australian data-centre setback in our coverage in 45 days, and the largest where a capacity was given.
The analysis says: “Big Tech’s hyperscalers are racing to build gigawatt-scale AI data centers, with five facilities set to exceed 1GW by 2026, each requiring a nuclear reactor’s worth of power.”
As we read it, Tungkillo was proposed at that gigawatt scale, and its pause turned on local consent for the site rather than on chips. The analysis predates the pause and does not discuss Tungkillo or Quantum DC.
What Is Not Established
In the material we read, Quantum DC gives no capital cost for the hub and names no customer or operator. The page describes the assessment that would follow if it applies for Crown Sponsorship in the future; whether it will, and when, is not stated.
Bloomberg’s article was behind a paywall, so we could not see which earlier halt its headline refers to. Our count of four setbacks covers only stories we reported; it is not a census of Australian projects.
This Week In The AI Supercycle
The Great Convergence of Capital, Power, and Geopolitics
This week’s issue: for two years the AI build-out was priced as a supply story, and last week as a credit story. This week it was priced as a permission story, and the answer arrived as a cost, not a ban.
Quantum DC says it has paused its approximately 1,200 MW Tungkillo hub and will not seek approval this year, after 432 questions from the community. By our arithmetic it is about 13 times the 90 MW Sydney project Goodman withdrew in September, and the fourth Australian setback in our coverage in 45 days.
A note on sourcing. Quantum DC’s figures and statements are from its Tungkillo Compute and Energy Hub project page, updated 12 November 2026. The remarks by the mayor and the premier, and the chief executive’s comment on the project’s future, are from ABC News; the 1.2-gigawatt description is from the Australian Financial Review. Bloomberg’s article was paywalled and only its headline is cited. The earlier Australian setbacks are restated from our own pieces, which cite the BBC, ABC News, NEXTDC and Reuters. The count of setbacks, the ratios and the sums are our arithmetic.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
