US Strategic Petroleum Reserve drops to 311.4 million barrels, lowest since 1983

America's emergency oil stockpile has fallen to its lowest level in 43 years, eroding the buffer that protects the economy from supply disruptions.

The US Strategic Petroleum Reserve dropped 5.1 million barrels to 311.4 million last week, the lowest since March 1983, as the government's emergency release program drains the nation's energy cushion.

The drawdown is part of a US commitment to release 172 million barrels from the reserve, the Department of Energy said. Since the US-Israeli conflict with Iran escalated in late February, SPR inventories have fallen by 104.04 million barrels as of July 17.

Total US crude inventories, including commercial stockpiles and the SPR, fell 129 million barrels to 726.2 million as of July 10, the lowest since 1984. WTI crude traded at $81.82 a barrel Monday, while Brent crude held at $88.54. US pump prices have crossed $4 a gallon again as the Middle East conflict continues.

The depletion leaves the US with a thinner emergency buffer than at any point in the past 43 years, raising the stakes for any further supply disruptions. Refilling the reserve would require buying oil on the open market, adding demand to an already tight global market. The Government Accountability Office has flagged operational risks tied to the SPR's salt cavern infrastructure when inventories fall too low.

The last time the SPR was this low, Ronald Reagan was in the White House and the US economy was emerging from a deep recession. Created in 1975 after the Arab oil embargo to provide a 90-day supply buffer, the reserve at 311.4 million barrels now covers roughly 16 days of US petroleum consumption based on the most recent EIA demand data. The previous comparable drawdown occurred in 2011 during the Libya conflict, when the SPR fell to 696 million barrels — more than double the current level.

The authorized 172-million-barrel release program still has roughly 68 million barrels remaining. If the drawdown continues at its current pace, the SPR could approach 250 million barrels before any refilling campaign begins — a level that would test the operational limits of the Gulf Coast salt cavern storage system. Refilling will require the Department of Energy to purchase crude on the open market, a process that typically takes 12 to 18 months and could add upward pressure on prices.

The SPR depletion has renewed discussion in Washington about energy security and whether the US should establish a Strategic Bitcoin Reserve, a concept that circulated in policy circles earlier this year. The logic draws a direct line from energy costs to Bitcoin mining economics: when energy prices rise because geopolitical tension reduces supply certainty and the SPR buffer shrinks, mining operators feel the pressure in their margins.

This article is for informational purposes only and does not constitute investment advice.