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Economy
Apr 29, 2026
Analyzed by GPT OSS 120B

Iran’s Oil Storage Near Capacity Amid US Blockade – Risks of Production Cuts

AI Summary
A US naval blockade of Iranian ports and the Strait of Hormuz has pushed Iran’s crude storage at Kharg Island to near‑full levels, raising fears of forced production cuts. Analysts estimate Iran could run out of storage within weeks if the blockade continues, with significant implications for global oil markets.

US Naval Blockade Threatens Iran’s Oil Storage Capacity

The United States has maintained a naval blockade of Iranian ports and the Strait of Hormuz since April 13, 2026. The move aims to choke Iran’s oil revenues by preventing crude exports, forcing the country to store the oil it continues to produce.

Rapid Rise in Iran’s Crude Inventories and Storage Utilization

  • From April 13 to April 21, satellite data showed an increase of over 6 million barrels in storage.
  • By April 20, Kharg Island’s tanks were about 74 % full, having taken on roughly 3 million barrels in the preceding week.
  • Iran’s domestic refineries can process 2.6 million barrels per day (bpd), while current export levels are 1.71 million bpd (April) versus 1.84 million bpd (March).
  • Floating tank capacity adds another 127 million barrels of storage.

Industry practice keeps storage below 80 % for safety, but Iran has previously exceeded this limit, reaching near 90 % in April 2020.

Potential Production Cuts and Global Oil Market Implications

Analysts from Kpler and the Columbia Center on Global Energy Policy (CGEP) warn that continued blockage could force Iran to trim output. While on‑shore storage still covers roughly 20 days of production, a gradual reduction is expected within the next week, with a higher chance of acceleration into May.

Cutting production carries technical risks, such as reservoir pressure loss and increased water or gas intrusion, which could raise future extraction costs. Moreover, a production halt would shrink Iran’s export revenues, though the country could still earn from oil already en route on tankers.

Outlook: When Might Iran Reduce Output and How Markets May React

Given the current storage trajectory, a decisive production cut is more likely a strategic choice than an absolute necessity. If Iran opts for an aggressive shutdown, it would preserve spare storage for a smoother restart once the blockade eases, mitigating long‑term supply disruptions.

Global oil prices could experience volatility as markets weigh the risk of reduced Iranian supply against the potential for alternative sources to fill the gap. Investors should monitor US policy signals and any diplomatic developments that could alter the blockade’s duration.