Can Australia’s grid handle the AI data-centre boom?

With the release of new federal expectations for AI infrastructure developers, Australia’s data centre pipeline is accelerating into a full-scale infrastructure race — one that will test the limits of the energy system.

On 23 March, Minister for Climate Change and Energy Chris Bowen and Dr Andrew Charlton, Assistant Minister for Science, Technology and the Digital Economy, released Expectations of data centres and AI infrastructure developers under the Government’s National AI Plan. 

These include requirements for data centres to underwrite new renewable supply, fund their share of grid connectivity so costs are not passed to consumers or businesses, and support Australia’s energy transition through demand flexibility mechanisms.  

They also include an expectation to put Australian businesses interests ahead of foreign-owned companies.

At its core, the question is not whether Australia can build enough generation. It is whether the system can deliver timely, coordinated supply — at the right location, under the right market rules — without driving up costs or emissions.

But whether the system can deliver on that ambition remains an open question.

Bowen said on the release of the expectations: “Australia is an attractive investment destination for data centre technology. We’re really proud of our abundant renewable energy resources, our sunshine and wind has already helped us reach 51% renewables on our grid. 

“Data centres have great potential to support our grid and expand new renewable investment, but it’s important we work together across jurisdictions and with industry to get the investment settings right so that we can continue to keep our system secure and energy prices low for all consumers.”  

Demand surge meets system constraints

Data centres currently account for a relatively small share of electricity demand, but forecasts suggest a sharp increase over the next decade. The challenge is load profile, location, and timing.

According to Julia Hinwood, Head of Infrastructure at the Clean Energy Finance Corporation (CEFC), the system response will determine whether this growth becomes a cost burden or a catalyst.

“If new generation supply keeps pace with large-scale data centre demand, the impact on electricity prices can be minimised,” Hinwood told Energy Insights. “However if new generation falls short of the demand, there can be material upward pressure on wholesale prices.” 
CEFC modelling highlights the scale of that divergence. With coordinated investment — including 3.2 GW of renewables and 1.9 GW of storage — price impacts could remain contained to low single digits by 2035. Without it, wholesale prices could rise by up to 26% in NSW and 23% in Victoria, driven by increased reliance on gas peaking generation.

This aligns closely with the government’s expectation that data centres bring new supply into the system.

Keeping prices low

Even as renewables expand, gas continues to play a disproportionate role in determining electricity prices.

During peak demand periods — particularly winter evenings or extended low-wind events — gas-fired generation remains the marginal unit in the National Electricity Market (NEM). That means global fuel dynamics can still flow through to electricity prices, even in a grid with growing renewable penetration.

This presents a structural tension with the government’s objective of keeping energy prices low. As long as gas remains the marginal price setter, international fuel volatility will continue to influence domestic electricity costs.

Hinwood notes that under a “no mitigation” scenario, the system leans more heavily on gas — not just increasing costs, but also raising emissions across the NEM.

Can data centres fund the transition?

One of the more optimistic narratives is that data centres could act as anchor customers for new renewable generation — underwriting projects that might otherwise struggle to reach financial close.

Hinwood says the potential is real: "Large data centres can act as a long-dated, stable offtake ‘financing anchor’ for new clean energy, supported by strong credit counterparties able to use instruments like power purchase agreements (PPAs). They can underwrite additional projects, reducing developer risk and supporting projects to reach development.”  

This model directly supports the government’s expectation that data centres help bring forward new renewable supply — positioning them not just as energy consumers, but as drivers of new capacity.

But that outcome is not guaranteed.

A policy shift that could reshape the economics

At the same time as demand accelerates, changes to emissions accounting rules are introducing new uncertainty.

Proposed reforms to Scope 2 accounting under the Greenhouse Gas Protocol — including hourly time matching and stricter deliverability requirements — could significantly alter how data centres procure renewable energy.

Rhys Thomas, Policy Manager at the Australian Energy Council, warns that these changes could materially tighten supply.

“The economics of sourcing these certificates or agreements will be more difficult if the Scope 2 accounting changes go ahead as proposed,” Thomas told Energy Insights. 

For data centres concentrated in Sydney and Melbourne, restricting renewable procurement to state-based boundaries could shrink the available pool of clean energy — particularly when combined with time-matching requirements.

“Renewable certificates at certain times of the day are already quite scarce and will be even more expensive if those certificates must be new and restricted to the state boundary.”

This emerging framework sits uneasily alongside policy ambitions to accelerate renewable investment. While stricter accounting may improve integrity, it could also impact costs and reduce flexibility in how new supply is procured.

Distortion risk: Location, location, location

Thomas also highlights a second-order risk: distorted investment signals.

“Developers may look to build new renewable projects near data centres… even though these locations may not be optimal conditions for weather-dependent generation.” 

This runs counter to the design principles of the NEM, which was built to enable geographically efficient generation supported by interconnection.

The AEC’s position is clear that restricting deliverability to state boundaries is not consistent with that design and risks undermining system-wide efficiency.

A transition defined by coordination

The data centre boom is not inherently a threat to the energy transition. In fact, it could accelerate it — if managed well. 

But the margin for error is narrowing.

Policy settings, transmission build-out, renewable supply, and demand visibility must align. According to Hinwood, priorities now include locational coordination, clean energy enablement, system security, and improved transparency.

The government’s expectations set a clear direction: data centres must support system security, accelerate clean energy, and avoid adding costs to consumers.

The challenge now is implementation.

If policy, market design and infrastructure delivery remain aligned, the data centre boom could unlock a new wave of clean energy investment. If not, it risks reinforcing the very pressures the system is trying to solve.