A Single Fire Just Exposed Australia's Premium Petrol Dependency
When you pulled up to the servo last week and saw the price gap between regular unleaded and 95 or 98 octane widen a bit more than usual, there's a decent chance you were looking at the real world consequences of a single piece of equipment catching fire in Geelong. Here's what's really going on.
On Wednesday 15 April, a gas leak inside the Alkylation unit at the Geelong refinery ignited. Fire Rescue Victoria had the blaze under control by midday Thursday, nobody was hurt, and to Viva Energy's credit the isolation valves did exactly what they were designed to do, sparing the diesel and jet fuel sections. But the damage to the gasoline complex was significant. Petrol output at the plant dropped to about 60 per cent of capacity. Diesel and jet fuel held up better at around 80 per cent. Viva's most recent update reckons they'll be back above 90 per cent across the board within a few weeks.
So what? It's one refinery, one fire, one unit. Why should any of this register at your local Melbourne or Sydney bowser?
Because of what the alkylation unit actually does.
The Quietest Important Machine in Australian Petrol
Here's the bit most people don't realise. Alkylation is where a refinery takes light hydrocarbons and stitches them together into alkylate, a high octane blendstock that's essential for making 95 and 98 premium petrol. You can run a modern refinery without plenty of things. You cannot make serious premium petrol without alkylate. When the Alkylation unit at Geelong went down, the actual hit wasn't to petrol broadly, it was to the high octane grades specifically.
To put this in perspective, the Geelong refinery supplies more than half of Victoria's fuel and roughly 10 per cent of the national total. Its processing capacity sits at 120,000 barrels a day. That's not a trivial corner of the market. And within those numbers, the premium petrol slice is the part that's been hardest hit.
If you're driving a newer Euro car, a turbocharged Japanese hatch, a performance Commodore, or anything with a manufacturer handbook that says minimum 95 RON, this is your story. Regular unleaded 91 drinkers will feel it too, just less directly.
How We Got Down to Two Refineries
This is the context nobody in Canberra really wants to talk about. Going back two decades, Australia had seven operating refineries. Today we have two. Geelong, run by Viva Energy, and Lytton in Brisbane, run by Ampol. That's it.
BP pulled the pin on Kwinana Beach in Western Australia back in 2020, citing commercial unviability, and the refinery stopped processing crude in 2021 after 65 years of operation. At 146,000 barrels a day, Kwinana was actually bigger than Geelong. Not long after, ExxonMobil converted Altona in Victoria into an import terminal. Two of the three refineries we had at the start of the decade are now glorified storage facilities for imported fuel.
The cold maths of it was straightforward. Asian export refineries got enormous, margins got squeezed, and the economics of refining small volumes at the bottom of the world stopped adding up. The government has since stapled together a refinery production payment to keep Geelong and Lytton running, which is effectively a subsidy to stop us ending up with zero refineries. Industry contacts tell me that even with the payments, the long term future of both plants is not guaranteed.
The Stock Level Nobody Likes to Mention
The International Energy Agency reckons its member countries should hold 90 days of net petroleum imports as strategic reserve. Australia, depending on who you ask and which week you ask them, is sitting on roughly 38 days of petrol, 29 to 31 days of diesel, and about 30 days of jet fuel. Compared to other IEA countries, that's genuinely embarrassing.
Energy Minister Chris Bowen confirmed last week that 57 ships carrying more than 4.1 billion litres of fuel are locked in through May, and the government has used strategic reserve powers to secure around 1.8 million barrels of diesel within a week, with another 570,000 on the way. None of that happens without phones ringing in places like Singapore, Rotterdam, and the US Gulf Coast. It works, but only because global shipping routes are still open and freight prices are behaving themselves.
What the Geelong fire really did was test how much slack the system has. Turns out the answer is some, but not heaps.
What It Actually Means at the Bowser
The practical upshot for your wallet comes in three flavours.
First, the premium to regular spread. The gap between 91 and 95 or 98 tends to be around 10 to 12 cents a litre in normal markets. Watch that gap widen over the next three or four weeks while Geelong ramps back up. An extra 5 cents on top of the usual premium, across a 60 litre tank, is three bucks per fill. Not ruinous. Annoying.
Second, regional variation. Victoria is most exposed because Geelong supplies its backyard. If you're filling up in Ballarat, Bendigo, or Geelong itself, keep an eye on the cycles. Interstate tanker movements will plug the gaps, but the logistics cost rides along with the fuel.
Third, don't panic buy. The government has specifically ruled out fuel rationing. Viva Energy has stated publicly that it has sufficient fuel stocks to maintain supply while the plant recovers. Topping up every second day because you saw a news headline is the fastest way to create the shortage that didn't actually exist.
The Bigger Picture
Here's the honest read on where this sits. Australia has spent the last decade quietly becoming one of the most refinery dependent economies in the developed world, reliant on imports for around 90 per cent of refined product. A single piece of equipment in Geelong going down didn't break the system. It just reminded everyone that the system has exactly one backup, and that backup is in Brisbane.
Policy makers will tell you fuel security is being addressed through the refinery production payment, the strategic reserve held offshore in the US, and the domestic diesel stockholding obligation that ratchets up over the coming years. Industry contacts tell me the real vulnerability isn't the refineries themselves, it's how thin our onshore storage genuinely is if global shipping ever hiccups at the wrong moment.
What to Actually Do
- If your car runs on 95 or 98, check Petrolmate before filling up over the next three or four weeks. The premium spread is the thing to watch.
- Don't jerry can up. It doesn't help you, it makes things harder for everyone else, and stored petrol degrades faster than people think.
- Keep half a tank minimum. Not because of a shortage, but because filling smaller amounts more often exposes you to the worst of the price cycles.
- Pay attention to whether the refinery production payment gets renewed at the next budget cycle. It's boring. It's also the thin thread keeping refining capacity in Australia at all.
The Geelong refinery will be back above 90 per cent capacity soon enough and the premium petrol market will settle. But the next time someone in Canberra tells you Australia's fuel security is in good shape, you'll know exactly how much of that is hope and how much is cargo ships.
