The United States Strategic Petroleum Reserve (SPR) fell to its lowest level since 1983, as tensions between the US and Iran escalated in early July 2026, raising concerns about global oil supply stability. President Donald Trump noted that any US military action against Iran leads to increased oil prices.
Current Status of the Strategic Petroleum Reserve
As of July 3, 2026, the SPR decreased by 6.2 million barrels, bringing the total to 319.5 million barrels, according to the Department of Energy. This marks the lowest level of the reserve since the Reagan administration.
The SPR has a maximum storage capacity of 713.5 million barrels, a level it last approached in the 2010s. Despite the US producing more oil than any other country and being a net exporter, the SPR serves as a critical buffer against supply disruptions.
Impact of Iran Tensions on Oil Prices
While only 7 percent of the crude oil consumed in the US travels through the Strait of Hormuz, disruptions in this key shipping route still have a significant effect on prices. This is because crude oil prices are determined by global benchmark rates, not solely domestic production levels.
- Brent futures rose to $78.02 per barrel, a 5.2 percent increase from the previous day.
- Price for a gallon of petrol rose from $2.98 on February 28 to $4.48 by mid-May.
- Approximately 60 percent of US crude oil is from domestic sources.
Role of the Strategic Petroleum Reserve
The SPR was established in 1975 following the Arab oil embargo, aimed at mitigating the impact of supply disruptions. The reserve is designed for extraordinary circumstances, such as conflicts or natural disasters. It has been utilized in the past during events like Hurricane Katrina and Russia's invasion of Ukraine.
“It’s for shocks like this; it’s for conflict, major overseas disruptions,” stated Abhi Rajendran, a non-resident fellow at Rice University’s Center for Energy Studies. The SPR provides a crucial buffer to help stabilize prices during crises.
🤖 This article was rewritten by Feed and Figures' editorial AI from a report originally published by Al Jazeera. Facts and quotes are preserved from the original; the rewrite focuses on clarity and structure. For the unedited original, see the source link below.
