Australia would implement fuel rationing if the nation's diesel stockpile drops to just 10 days of supply, according to previously confidential government modelling reported by the ABC.
The revelation exposes significant vulnerabilities in Australia's fuel security and raises serious questions about the country's strategic reserves amid rising Indo-Pacific tensions and the nation's geographic isolation.
Ten days. That's how long Australia could run on domestic diesel supplies before the government would need to start deciding who gets fuel and who doesn't. For a country that ships nearly everything by road and relies on just-in-time supply chains, that's a terrifyingly thin margin.
The modelling, which had not been publicly disclosed until now, assumes fuel rationing measures would kick in once stockpiles hit the 10-day threshold. The ABC report doesn't specify exactly what "rationing" would look like, but it likely means priority allocation to emergency services, food distribution, medical supplies, and critical infrastructure - while ordinary motorists queue or go without.
Mate, Australia is one of the most car-dependent developed nations on earth, spread across a continent with limited rail freight and virtually no domestic oil refining capacity anymore. We import the vast majority of our refined fuel from Singapore and South Korea. Any disruption to those supply chains - whether from conflict, natural disaster, or economic crisis - could leave the country running on fumes within weeks.
This isn't theoretical. Australia has systematically dismantled its domestic refining capacity over the past two decades as cheaper imports from Asia undercut local production. The country that once refined its own fuel now depends almost entirely on foreign refineries and shipping routes that could be cut in any number of scenarios.
The fuel security issue has taken on greater urgency as strategic competition intensifies in the Indo-Pacific. Australia's supply routes run through some of the world's most contested waters - the South China Sea, the Malacca Strait, the sea lanes around Taiwan. Any conflict or blockade in those areas could sever Australia's fuel lifeline.
The government has made efforts to boost fuel security in recent years, including investing in a strategic petroleum reserve and providing subsidies to keep the last few domestic refineries operating. But the ABC report suggests those measures may not be enough to prevent rationing in a serious supply disruption.
The 10-day threshold is particularly alarming when you consider how quickly a crisis can escalate. By the time fuel stockpiles hit 10 days, it's probably already too late to avoid severe economic and social disruption. Supermarket shelves would empty. Ambulances would face tough choices. Remote communities - already at the end of long supply chains - would be cut off entirely.
Australia's fuel vulnerability is part of a broader pattern of strategic complacency that decades of peace and prosperity allowed to develop. The country offshored manufacturing, closed refineries, and built supply chains optimised for cost rather than resilience. That worked fine when the world was stable and globalisation seemed permanent.
Now, as great power competition returns and supply chains prove fragile, Australia is discovering just how dependent it became on a functioning, open international order. The fuel security issue is perhaps the starkest example - a wealthy developed nation that can't keep its own vehicles running for more than a fortnight without imports.
The government modelling's assumption that rationing would begin at 10 days of supply suggests officials are acutely aware of this vulnerability. Whether they're doing enough to address it is another question entirely.
