Data centres and the grid: proposed reforms signal tighter connection rules

Australia’s rapidly expanding data-centre sector is coming under increasing scrutiny from energy market regulators, with proposed rule changes aimed at ensuring large electricity users do not threaten power system stability.

Draft reforms from the Australian Energy Market Commission (AEMC) would introduce new technical standards requiring large electricity users, including data centres, to remain connected during disturbances on the electricity grid and respond to instability.

The proposal reflects a growing recognition that hyperscale digital infrastructure, particularly facilities supporting artificial intelligence and cloud computing, can behave differently from traditional electricity users and may influence grid stability.

These reforms come as electricity demand from data centres is expected to grow rapidly, while the National Electricity Market (NEM) simultaneously transitions away from coal-fired generation toward renewable energy.

Key takeaways

• New technical standards are being proposed for large electricity users. Data centres may be required to remain connected and operate through grid disturbances.

• A formal 30 MW threshold is proposed. Facilities above this level would be classified as “large loads” subject to the new requirements.

• Connection processes may become more complex and costly. Developers may need advanced control systems and grid-support equipment.

• Infrastructure funding expectations are emerging globally. Policymakers are increasingly signalling that data-centre proponents may need to contribute to energy infrastructure costs.

Why the AEMC's proposed changes to current connection standards matter now

Data centres currently account for around 2% of Australia’s electricity consumption, but this share is expected to grow significantly as artificial intelligence and cloud infrastructure expand.

At the same time, the NEM is undergoing major structural change as coal-fired generators retire and renewable generation becomes more dominant.

Large electricity loads can influence how disturbances affect the grid. Data centres typically rely on power electronics similar to those used in solar and battery systems. During grid faults, such as voltage dips, these systems can rapidly reduce demand or disconnect from the grid. If multiple facilities respond simultaneously, the sudden loss of load can destabilise the power system and potentially contribute to cascading outages. AEMC points to recent grid incidents in the United States of America and in Ireland as to why Australia needs clear technical standards now.

These dynamics have prompted regulators to reconsider whether current connection standards adequately address the risks associated with rapidly growing large electricity loads.

Proposed “ride-through” requirements

The AEMC’s draft reforms would introduce disturbance “ride-through” requirements for large electricity users.

Under the proposal, large facilities would be expected to:

• remain connected during voltage and frequency disturbances;

• maintain stable operating behaviour during grid faults; and

• restore demand quickly once system conditions stabilise.

Meeting these standards may require more sophisticated control systems and grid-support equipment, increasing engineering complexity and connection costs for some projects.

The reforms would also introduce greater regulatory clarity. While network operators often treat loads above around 5 MW as “large”, this threshold sits outside the formal rules and has been applied inconsistently. The draft proposal would instead establish a formal 30 MW threshold for large loads subject to the new standards.

The changes form part of broader reforms to the NEM’s access standards, which are being reviewed in response to the projected growth of large inverter-based loads such as data centres and hydrogen electrolysers.

A broader policy trend: who pays for energy infrastructure?

Alongside technical connection requirements, policymakers are increasingly examining who should bear the cost of the infrastructure needed to support energy-intensive digital infrastructure.

This issue is being considered as part of the recently announced NSW inquiry into data centres, which includes a review of the energy, water and broader infrastructure impacts associated with large-scale digital developments.

Policymakers are increasingly exploring whether data-centre proponents should contribute to the infrastructure required to support their developments.

Internationally, similar debates are already shaping policy responses. In March 2026, major technology companies in the United States signed a “Ratepayer Protection Pledge”, committing to fund the additional electricity generation and infrastructure required for new AI data centres so that costs are not passed on to household consumers.

Under the initiative, companies agreed to build or procure additional power generation and fund associated grid upgrades needed to support their facilities.

While the approach differs across jurisdictions, the underlying policy signal is increasingly clear: data-centre proponents may be expected to play a more direct role in funding the infrastructure required to support their energy demand.