An out-of-control fire at one of Australia’s two remaining oil refineries overnight is set to affect the supply of petrol and diesel.

Just after 11:00pm on Wednesday night, a fire broke out at the Viva Energy facility in the Geelong suburb of Corio, an hour south-west of Melbourne – with authorities confirming the blaze has yet to be brought under control. No injuries have been reported.

A spokesperson for the Australian Workers’ Union said the fire began in the jet fuel production area, but explained the supply of oil is interconnected with petrol and diesel manufacturing at the refinery.

It’s understood the oil refinery processes up to 120,000 barrels of oil daily, supplying more than 50 per cent of petrol, diesel, jet fuel, and LPG to Victoria.

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“At this point, production of jet fuel and diesel is continuing at the refinery at reduced levels for safety reasons as a precaution,” federal energy minister Chris Bowen told Channel Nine’s Today program.

“At this point, the impact is mainly on petrol production, but obviously, this is very early days.”

The exact impact on the state’s fuel supply is unknown at this stage, and it’s not yet clear how long it will take for repairs to be made.

The incident couldn’t have come at a worse time, with CarExpert reporting last month that Australia’s other oil refinery, located in Brisbane, is set to shut down for six weeks due to planned maintenance by owner Ampol – beginning in August 2026.