**US Strategic Oil Reserve Plummets to Lowest Level in 44 Years Amid Ongoing Conflict**
The United States' Strategic Petroleum Reserve (SPR) has reached its lowest level in nearly 44 years, as ongoing geopolitical tensions, particularly the US-Israeli conflict with Iran, continue to impact global oil supplies. According to data released by the Department of Energy, the SPR has decreased to 283.8 million barrels as of the week ending September 25, marking a significant decline from 415.4 million barrels in mid-March. This represents a nearly 32% reduction since the US began releasing crude oil from the reserve in March, and a staggering 61% drop from the record high of 726.6 million barrels in late 2009.
Established in 1975 in response to the Arab oil embargo, the SPR was designed to serve as an emergency buffer against severe disruptions in oil supply. The reserve consists of underground salt caverns located along the Gulf Coast in Texas and Louisiana, with a capacity to hold over 700 million barrels. However, it has been heavily utilized in recent years, particularly as the US government has sought to address supply shortages exacerbated by international conflicts.
In March, the Biden administration announced plans to release up to 172 million barrels of crude oil as part of a coordinated effort with other members of the International Energy Agency, which aimed to collectively release 400 million barrels in response to the ongoing supply crisis. Much of the crude being released is provided through exchange agreements, which require companies to return the oil later, along with additional barrels as a premium.
The ongoing conflict has led to a sharp decline in global oil inventories. Analysts from Goldman Sachs reported in May that visible crude and petroleum product stocks were decreasing at a record rate of 8.7 million barrels per day (bpd), nearly double the average rate since the onset of the Iran conflict in February. While oil flows have increased since then, they have not fully returned to pre-conflict levels. Energy analytics firm Kpler estimated that Middle Eastern crude exports reached 12.8 million bpd in September, the highest since the conflict began, yet still significantly below the 18.8 million bpd recorded in February.
Preliminary data from Kpler indicated that crude exports through the Strait of Hormuz were projected to average around 7.4 million bpd in September. Despite these figures, US President Donald Trump recently claimed that record amounts of oil were being transported through the strait, asserting that the volume exceeded pre-war levels. He also expressed optimism that crude prices would decline further once the conflict concludes.
The Energy Department has indicated that approximately 200 million barrels are expected to return to the SPR under the exchange program. However, these repayments will take time, leaving the US with a considerably reduced emergency oil cushion in the interim.
It is important to note that not all oil counted in the SPR is readily accessible. The Government Accountability Office reported in June that over a quarter of the oil in the reserve was unavailable as of December 2025 due to ongoing construction and maintenance issues. The agency estimated that the effective drawdown capacity of the reserve is only 61% of its designed rate, further complicating the US's ability to respond to potential supply disruptions.
As the situation continues to evolve, the implications of the SPR's declining levels could have significant repercussions for both domestic energy security and global oil markets. The current state of the reserve highlights the challenges faced by the US in managing its energy resources amid ongoing international conflicts and supply chain disruptions.