Australia's biggest single power user
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Grazing tracks and farm dams still crease a paddock beside the Western Sydney Aerotropolis at Kemps Creek. Amazon's regional warehouse sits on one side, with two schools close by. The site will soon host Australia's largest single energy load.[1]
The proposed Mamre Road campus carries a capacity of up to 1.2 gigawatts, bigger than the Tomago smelter. Investigations by Greenpeace Australia Pacific and the Climate Council reveal Australia's data centre boom is outpacing renewable energy delivery.
The gap is straining household budgets and national emissions targets.[2]
The New South Wales Government fast-tracked fifteen data centres this year through its Investment Delivery Authority process. Critics say the fast-track pathway compresses normal planning and community consultation timeframes.
Mamre Road ranks among the largest, spanning six four-storey buildings across fifty-two hectares at Kemps Creek.[1]
Developers value the project at roughly AU$5 billion, backed by AirTrunk and endorsed under fast-track planning powers. The precinct sits within the wider Western Sydney Employment Area, rezoned for industrial growth in 2020.
The site will include six data halls, nearly a thousand cooling units and hundreds of diesel back-up generators.[4]
An environmental impact statement projects the campus's peak grid emissions will reach almost 1.3 million tonnes by 2032. That single project could rival the emissions footprint of several mid-sized Australian industrial facilities combined.
Greenpeace Australia Pacific says this rivals the annual emissions of every domestic flight departing New South Wales.[2]
A separate proposal in the Northern Territory could double that jurisdiction's total emissions on its own. Both projects illustrate how gas-fired backup generation can undermine broader state and territory climate commitments.
Analysts warn a gas-fired project called Cloud Carrier could erase New South Wales's entire 2028 emissions target.[7]
Many operators describe their facilities as fully powered by renewable energy through certificates or long-term contracts. Renewable energy certificates can be traded separately from the physical electricity a facility actually consumes.
Greenpeace Australia Pacific calls these claims questionable at best, citing a lack of independent verification.[2]
Australia's data centre electricity use grew eighteen per cent in New South Wales over the year to mid-2026. Both states already host the bulk of Australia's ninety operating and proposed data centre projects. Consumption nearly doubled in Victoria across the same period, according to Climate Council analysis.[4]
Modelling for the Australian Energy Market Operator shows data centres consumed 3.9 terawatt-hours nationally in 2024-25. Oxford Economics prepared the modelling for AEMO's Integrated System Plan and Electricity Statement of Opportunities. That share is forecast to triple to twelve terawatt-hours within the National Electricity Market by 2030.[3]
The Net Zero Commission projects New South Wales electricity demand climbing from 64 to 81 terawatt-hours by 2035. The Commission warns this acceleration coincides precisely with the period renewable construction must also ramp up.
Data centres alone add nearly two percentage points to the state's annual growth rate this decade.[8]
The Climate Council warns unmanaged growth could lift wholesale prices more than twenty per cent by 2035. The increases stem largely from continued reliance on expensive and polluting gas-fired generation. New South Wales could face a rise as steep as twenty-six per cent, Victoria twenty-three per cent.[4]
Wholesale costs already make up around forty per cent of a typical household power bill. Network and retail charges make up most of the remaining share of household bills. Rising gas reliance to meet data centre demand threatens to push those costs even higher.[4]
New South Wales legislation introduced in August 2026 seeks a causer-pays model for network upgrades. The reform follows years of debate over who should fund network expansions triggered by new loads. Under the bill, large new loads including data centres would fund the infrastructure their connections require.[6]
Consumer advocates argue ordinary households in growth corridors like Western Sydney carry disproportionate exposure to these costs. Campaigners want dedicated consumer representation in the regulatory proceedings that set these cost allocations.
Small businesses in regional data hubs face similarly rising overheads as demand accelerates.[2]
Sydney's data centres currently draw about 0.7 per cent of the city's water supply. Both figures remain modest today, though most large projects remain in early construction or planning stages. Melbourne's facilities use a smaller share, near 0.2 per cent, Climate Council figures show.[4]
Sydney Water has told a state parliamentary inquiry cumulative demand could reach 250 megalitres daily by 2035. Sydney's drinking water already relies on a single dam and one desalination plant. That volume could claim as much as a quarter of the city's available water within a decade.[5]
Mamre Road alone plans nearly a thousand cooling units alongside more than eight hundred diesel back-up generators. Concrete and steel production for such large structures carries a substantial upfront carbon cost.
Construction of six four-storey buildings adds a considerable embodied carbon burden before any server switches on.[4]
Western Sydney's water security already sits under strain from drought cycles and rapid population growth. Local farmers near Kemps Creek already recall restrictions on irrigation during the 2019 drought. Environmental scientists caution that concentrated cooling demand could worsen shortages during future dry periods.[5]
The federal government now expects data centre operators to underwrite new renewable power supply themselves. The expectations also call on hyperscale operators to share compute capacity with local start-ups. Canberra also wants operators to pay the full cost of new grid connections.[9]
State and federal energy ministers agreed in 2026 that data centres must fully offset new demand with renewable generation. The Australian Energy Market Commission is now drafting detailed rules to implement the policy.
Every jurisdiction except Queensland and the Northern Territory backed the measure.[6]
New South Wales moved to legislate grid access powers and cost-recovery rules for large loads in August 2026. Energy Minister Chris Bowen says the goal is treating data centres as grid assets. The framework gives the state minister direct authority over new connections.[6]
Greenpeace Australia Pacific continues to call for a moratorium on new approvals until stronger safeguards exist. The organisation wants full public disclosure of emissions, energy and water use per project.
Campaigners argue fast-track planning powers have outpaced genuine environmental and community scrutiny.[2]
Australia's data centre boom is racing ahead of the renewable capacity meant to power it. Mamre Road symbolises a wider pattern across the sector, where scale outpaces scrutiny and untested green claims go unchecked. Emissions targets and household budgets both carry the strain.
New national rules promise fully offset renewable supply, firmed capacity and fairer cost recovery for households. State and federal regulators have finally moved after years of warnings from climate and consumer groups. Whether enforcement keeps pace with the industry's growth remains the open question.
Communities in Western Sydney and regional Victoria carry the greatest exposure to rising bills and strained water supplies. Their neighbourhoods host the infrastructure while distant boardrooms capture the benefit. Australia's climate goals and its social contract now depend on the same outcome.
1. Concern over Australia's most power-hungry data centre. Information Age reports on planning documents and community submissions for the Mamre Road campus.
2. Energy Vampires: the AI data centres draining Australia. Greenpeace Australia Pacific's report on emissions, water and additionality risks across the sector.
3. Data Centre Energy Demand, Final Report. Oxford Economics Australia modelling prepared for the Australian Energy Market Operator.
4. Seizing the opportunity to do data centres right. Climate Council analysis of demand growth, wholesale price and water impacts.
5. What AI data centres really mean for Australia's water supply. University of Melbourne's Pursuit examines Sydney Water's demand projections.
6. Big day for data centres. MinterEllison legal analysis of new renewable offset and cost-recovery rules.
7. 'Energy vampires': Calls to pause data centre frenzy. Information Age summarises the Greenpeace report's findings on emissions across projects.
8. Submission to Inquiry into Data Centres. The NSW Net Zero Commission's demand and emissions modelling for the state.
9. An Australian approach to AI: Expectations for data centres that deliver for Australians. The federal government's stated expectations for renewable investment and cost recovery.