A fuel crisis has gripped the nation since war erupted in the Middle East and Iran blocked oil shipments through the Strait of Hormuz in response to US and Israeli strikes.
The Western Australian government is assessing whether it could build a fuel stockpile to bolster energy security and supply chains across the vast state.
"This would be additional volumes of diesel purchased by the state government and held in storage for times when it's tough and when we're seeing challenges in those supply chains," Energy Minister Amber-Jade Sanderson said on Sunday.
"This would be solely for West Australians and be directed at the discretion of the state government to areas that need it most."
Those areas would include agricultural regions at the end of supply chains, mining operations and remote communities that rely on diesel to power generators.
The state government did not disclose how much the stockpile would cost, but Ms Sanderson said discussions were under way for a reserve "in the millions of litres".
"This will help support that spot market (and) it will support those end of supply chain areas in the Great Southern, in the Wheatbelt and in the Goldfields, where they've had more difficulty getting that fuel (since the fuel crisis started)."
WA's strategic stockpile would be in addition to the national fuel reserve, which the state believes it would still be able to access in the event of another crisis.
"It is a requirement for states to receive their fair share," Ms Sanderson said.
The current fuel emergency has revealed some suppliers did not store any of their national fuel stock obligation in WA.
"Viva and Ampol, for example ... It's in Queensland," Ms Sanderson said.
The focus was initially on diesel, Ms Sanderson said, with WA using about a quarter of all supplies in Australia.
WA Opposition Leader Basil Zempilas backed the proposal but said it was light on detail.
"How much it would cost, whether it would be government-owned or come about through a much closer working relationship between the state government and the suppliers, remains to be seen," he said.
"We need our own reserves, and we need to be able to establish a way in which Western Australians and WA industry aren't compromised when we have a global event like this in the future."
He said WA should not be disadvantaged because of its remoteness from other states.
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