Data centres have shifted from obscure industrial facilities to front-page news across the country. When researchers invited the public to submit questions about these buildings, nearly 350 responses arrived within days—so many that the survey had to close early. That level of interest reflects a genuine tension: Australia wants the investment, jobs, and technological capability that data centres promise, while communities increasingly question what these facilities mean for their water, electricity, neighbourhoods, and personal information.
This article draws on expert commentary contributed to by Professor Amir Karton of The University of Western Australia and originally published in The Conversation, alongside perspectives from researchers at Australian universities nationwide. It addresses the nine most common questions the public asked about data centres in Australia—from regulation and data ownership to environmental impacts and national security.
Why Data Centres in Australia Are Attracting Record Investment and Scrutiny
The scale of development is difficult to overstate. In New South Wales alone, investment in the sector has grown roughly 75 per cent each year over the past three years, with more than 60 facilities operating or under construction and a further A$50 billion in the pipeline. Victoria’s data centre action plan could deliver projects worth more than $25 billion. Nationally, approved developments will require a reported six gigawatts of power—enough to supply about three million homes—compared with the 100 megawatts consumed by the existing generation of facilities.
This growth is driven by the rapid uptake of AI services in Australia and worldwide. Companies like Microsoft, Amazon, Google, and Anthropic are spending billions to expand computing capacity, and governments view the construction boom as an opportunity to build sovereign capability and help fund the renewable energy transition. But with opportunity comes scrutiny, and the public has legitimate questions about who benefits and who bears the costs.
Want to understand the technology and policy debates shaping Australia’s digital future? Explore research programs and courses at The University of Western Australia and other leading institutions to build expertise in this fast-moving field.
Data Ownership in Australia: Who Controls Your Information?
A useful way to think about a data centre is as a modern library. It stores data in many formats, organises it for fast retrieval, and keeps archives and backups—while servers inside process requests and deliver the right information to your device. The largest facilities, known as hyperscale data centres, are optimised for AI workloads and equipped with specialised chips capable of performing millions of calculations in parallel.
It helps to distinguish between operators and tenants. The operator runs the facility; tenants rent space or server racks inside. Companies like NextDC, CDC, and Airtrunk operate major facilities across the country, often serving multiple tenants under commercial agreements that are rarely disclosed publicly.
On the question of data ownership in Australia, the general principle is that a data centre acts as a custodian, not an owner. Data remains the property of the individual or the service provider that created it. However, ownership is complicated by overlapping laws and jurisdictions. Data stored onshore is not automatically protected from offshore access: the US Cloud Act, for example, allows American authorities to request data held by US companies even when it sits on servers outside the United States. A prompt submitted to an AI chatbot from Sydney may touch servers in several countries before a response arrives.
Some categories are strictly protected—Australians’ My Health records cannot be held or processed overseas—but most data enjoys no such blanket guarantee. As AI becomes central to the economy, questions of who genuinely controls what will only intensify.
The Regulation Gap: How Are Data Centres Governed?
Perhaps surprisingly, there is no consistent national framework regulating data centres in Australia. The only laws that currently apply are the standard planning processes used for most infrastructure projects. States and territories have varying, largely non-binding requirements: Victoria has a data centre action plan, New South Wales offers fast-tracked approvals for developers who meet its guidelines, and Tasmania and South Australia have strategies under review. Queensland, Western Australia, and the Northern Territory have no dedicated policy at all, meaning applications are often assessed as ordinary warehouses or general industrial uses.
The federal government has announced it will work with states and territories to develop consistent mandatory standards covering energy, water, and land use. It has also released non-binding guidelines addressing environmental impacts, cultural heritage, and the expectation that high energy consumption should not raise costs for households. A proposed “causer pays” principle would require operators to offset their energy use with new renewable generation—but this would apply only to future projects, not the more than 200 centres already moving through planning. Enforcement arrangements, powers, and resourcing remain undefined.
Community Engagement in Australia: Do Residents Get a Say?
The short answer from researchers is: not really. Data centre locations are determined mainly by developers and state planning departments, with local councils and communities holding limited influence. Developers select land based on four criteria: sufficient space for the facility and future expansion; access to energy and water infrastructure; proximity to urban users and submarine cable networks; and a supportive regulatory environment.
In New South Wales, data centres are classified as State Significant Developments, assessed by the state government rather than councils. Victorian laws can similarly allow projects to bypass local planning controls. Once a site is chosen, communities generally cannot determine location—but they can influence design. Through written submissions and developer engagement processes, residents have pushed for reduced building heights, tree retention, and measures to limit overshadowing. In one recent case, a proposal in Lane Cove West attracted more than 374 submissions, triggering referral to the Independent Planning Commission.
Researchers recommend two improvements to community engagement in Australia: classifying data centres more precisely within planning systems rather than defaulting to industrial zones near homes and schools, and involving councils and residents earlier—before sites are purchased and designs are locked in. Early engagement tends to produce outcomes that serve both developers and the communities hosting these facilities.
Have you experienced a data centre proposal in your area? Share your experiences in the comments below and add your perspective to this national conversation.
Why AI Services in Australia Are Pulling Data Centres Into Cities
Not all data centres need to be near people. The world’s largest AI training facilities are built where energy is abundant, not where populations cluster. But circumstances are changing. Most existing Australian data centres were designed for an earlier era—streaming and cloud hosting—which kept popular content cached close to users while heavy processing happened elsewhere.
AI breaks that model. Every time someone uses a chatbot or an AI-powered application, the model must generate a fresh response through a process called inference, which cannot be cached in advance. As AI services in Australia spread across business and consumer applications, more inference capacity is needed close to where people live. Add to this the fact that connecting new sites to the electricity grid can take years, and operators naturally favour locations where high-voltage transmission and substation capacity already exist—concentrated in and around the major cities that state governments are keen to fast-track.
The Economics: Where Do the Profits Go?
Think of data centres less as technology companies and more as commercial landlords that charge rent based on power consumption rather than floor space. Of the billions being invested, up to 65 per cent goes toward computer equipment—and almost all of that money flows overseas to chipmakers like Nvidia, which enjoys gross margins of around 70 per cent on its AI processors.
Money more likely to stay in Australia covers land, construction, engineering, and grid upgrades—roughly five per cent goes to power capacity alone. Once operational, facilities generate high margins of around 50 per cent, driven by a 97 per cent global occupancy rate and long-term leases where tenants pay for their own power. Ownership is diverse: global investment funds, foreign pension funds, Australia’s largest superannuation funds, the Future Fund, and listed companies all hold stakes. The primary economic contribution domestically is the short-term boost during construction; beyond that, most profits ultimately flow to overseas chip companies and investors.
Water and Energy: Managing the Environmental Costs
Data centres require constant cooling to prevent overheating. A common approach circulates a water-glycol mix through server banks, then dissipates the heat in external cooling towers using mains water and forced air—much like the way the human body sweats. The strain is measurable: within a decade, data centres are expected to consume 25 per cent of Sydney’s daily water demand, up from one per cent today.
Solutions are emerging. Amazon Web Services is building a facility in Melbourne’s west cooled with recycled wastewater supplied by a treatment plant—the first such arrangement in Victoria and part of a broader state ambition. Seawater cooling, used by Google in Finland, is another option, though it poses corrosion challenges. And with governments expecting operators to offset energy demands through new renewable generation or storage, well-designed projects could help fund the energy transition rather than strain the grid.
What Happens if the AI Bubble Bursts?
Data centres would not become empty shells. The underlying demand for data storage and processing will persist regardless of fluctuations in AI markets. The most vulnerable projects would be those without confirmed customers, reliable power, or strong connectivity—some would be cancelled, delayed, or sold. Expensive computer chips face the greatest risk of becoming outdated, though newer ones could shift toward cloud computing, medical research, or weather forecasting. The buildings themselves—power connections, fibre networks, cooling systems, and serviced land—retain value for years, serving banks, hospitals, government agencies, and universities.
History offers reassurance: the dot-com crash of the early 2000s left companies with too many fibre-optic networks and heavy losses, yet the internet kept growing on that same infrastructure. Even under the International Energy Agency’s slow-growth scenario, global data centre electricity use rises roughly 70 per cent by 2035. The lesson for Australia is to build carefully—in stages, with real customers secured and developers funding the infrastructure their projects require.
Are Data Centres Military Targets?
They already are. When conflict erupted involving the US, Israel, and Iran, Tehran’s retaliation struck data centres in the United Arab Emirates and Bahrain—experts described the moment as a sea change in warfare. Physical protection of critical data infrastructure is now a serious concern, and threats extend beyond missiles and drones to cascading failures: an attack on a power grid or undersea cable could take out data centres too, as the 2024 CrowdStrike outage demonstrated unintentionally. Australia’s preparedness for these scenarios remains poorly understood, and researchers argue that fortification, data backup strategies, and critical infrastructure protection deserve far greater priority than a fence and locked doors.
Key Takeaways for Australians Watching This Space
- Ask about data ownership: Storing data onshore does not guarantee protection from foreign access. Understand where your information travels and which laws apply.
- Get involved early: Community influence is strongest during design consultation, not after sites are chosen. Attend council sessions and submit feedback on exhibited applications.
- Demand sustainable design: Recycled water cooling and renewable energy offsets are proven approaches that are increasingly expected.
- Support selective development: The question is not whether Australia hosts data centres, but which ones serve national interests.
The Road Ahead for Data Centres in Australia
Data centres are where the digital economy physically resides, and the decisions made now—about regulation, location, ownership, and sustainability—will shape Australia’s technological sovereignty for decades. The expertise needed to navigate these questions spans law, engineering, ethics, urban planning, and computer science, and Australian universities are at the centre of that research effort.
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