Australia’s ambitious push toward net zero emissions is facing a silent but formidable challenger: the explosive growth of datacentres. Could these power-hungry facilities derail the nation’s climate goals? While datacentres are the backbone of our digital age, their insatiable appetite for electricity is raising alarms. Here’s the startling reality: Australia’s datacentre power demand could triple in just five years, surpassing the energy consumption of electric vehicles by 2030. But here’s where it gets controversial—while tech giants like OpenAI and SunCable are championing Australia as a global hub for data processing, experts warn that this unchecked growth could strain the energy grid and lock in fossil fuel dependency.
Currently, datacentres consume about 2% of Australia’s National Grid electricity, or roughly 4 terawatt-hours (TWh). The Australian Energy Market Operator (AEMO) predicts this will skyrocket to 12 TWh by 2030—a 6% share of grid demand—and further to 12% by 2050. In states like New South Wales and Victoria, where most datacentres are located, they could account for 11% and 8% of electricity demand, respectively, by the end of this decade. Is this growth sustainable, or are we trading digital progress for environmental regression?
Globally, datacentre demand is growing four times faster than any other sector, driven by the rise of hyperscale facilities and AI-focused operations. According to the International Energy Agency (IEA), a single hyperscale datacentre can consume as much electricity annually as 100,000 households. And this is the part most people miss—the energy and water consumption of these facilities is overwhelmingly tied to cooling, as servers generate immense heat. Professor Michael Brear of the University of Melbourne explains, ‘When you pack thousands of computers into a confined space, you need massive cooling systems to keep them operational.’
But the energy transition isn’t the only concern. Climate analyst Ketan Joshi points out that datacentres are inflexible loads on the grid, often relying on coal and gas during periods of renewable energy scarcity. ‘Even if datacentres invest in renewables,’ Joshi notes, ‘their constant power draw doesn’t always align with renewable generation. Sometimes, they inadvertently support fossil fuel dispatch.’ This creates a paradox: Are we running harder just to stay in the same place?
The federal government’s recent AI plan acknowledges the need for sustainable energy and cooling solutions, but critics argue that concrete policies are lagging. Meanwhile, some companies are resorting to extreme measures, like restarting mothballed nuclear plants in the U.S. or proposing new gas generators in Australia. By 2035, datacentres could consume 21.4 TWh—nearly matching the energy use of Australia’s four largest aluminium smelters.
Here’s the burning question: Can Australia balance its digital ambitions with its climate commitments? Dr. Dylan McConnell warns that if renewable energy deployment doesn’t accelerate, datacentre growth could hinder coal phase-outs and drive up power prices. ‘Building a bigger grid to meet this demand will inevitably increase costs,’ he says. The Climate Change Authority echoes this concern, stating that large-scale datacentres will compound pressure on regional power sources.
As Australia stands at this crossroads, the stakes couldn’t be higher. What do you think? Is the growth of datacentres a necessary evil for technological advancement, or a threat to our net zero future? Share your thoughts in the comments—let’s spark a conversation that could shape Australia’s energy landscape.
