Datacentre Power Clash Exposes Australia's

A political clash over how to power new datacentres has exposed a critical shortfall in Australia's energy transition. The federal government wants new datacentres to use 100% renewable electricity, but Queensland and the Northern Territory are pushing to use their state-owned gas and coal power stations instead.

Last week's national cabinet meeting produced a vaguely worded agreement, allowing all leaders to claim victory without establishing clear rules. Federal Energy Minister Chris Bowen later stated the government's intent to legislate binding national standards requiring 100% renewable power for datacentres, backed by firming capacity that could include gas. He said the federal government would consider concessions only if state-owned generation could provide a cheaper power mix.

The Economics of Power Choice

The state-led push appears economically unlikely. Electricity constitutes about 10% of a datacentre's total expenditure. Gas is the most expensive form of generation, and new coal is more expensive than new renewables. Existing coal power is undercut by cheap solar for much of the day. Consequently, existing datacentres already choose to run on roughly 70% renewable electricity via power purchase agreements with wind or solar farms to control costs.

Using gas and coal power would probably increase electricity costs for datacentres. It could also delay their development, as the waitlist for new gas turbines stretches for years.

Location and Future Demand

Most datacentres must be near population centres for instantaneous data transfer. This explains why the vast majority of Australia's existing datacentres, and 85% of proposed ones, are in Sydney and Melbourne. A fossil-fuel-powered datacentre boom in the north is improbable unless the population shifts markedly and datacentres develop a preference for expensive electricity.

New South Wales and Victoria cannot take future development for granted, however. If new wind and solar farms cannot be built as fast as new datacentres, growth will be constrained. For federal legislation to be effective, all levels of government must work to make financing and building new renewables easier.

The Broader Energy Challenge

The debate highlights two systemic energy sector problems: the absence of restrictions on electricity emissions, and the insufficient pace of construction to meet all new demand sources. Apart from a two-year period with a carbon price, electricity generators have never been forced to reduce emissions. Governments have focused on adding renewables to the mix faster than demand grows, which reduced emissions by undercutting coal's market share. Australia is now reaching the limits of this approach.

Implementing electricity emissions restrictions could render the technology debate moot, as restrictions would manage the emissions impact. Focus could then shift to datacentres' effects on power prices and supply reliability.

Datacentres account for only 17% of projected future power demand growth. The remainder comes from increased electric vehicle uptake, households and businesses switching to electricity, and population growth. Even without datacentres, Australia would face the same core problem: it is not building electricity infrastructure-renewables, transmission lines, batteries, storage, and backup generation-fast enough to meet its needs.

The future economy should run on electricity because it is cheaper, cleaner, and more efficient. Building a much bigger electricity system is essential. Datacentres are merely the first test of how well Australia meets this overarching challenge.