Key Takeaways:
Japan has locked in alternative crude supplies and tapped strategic reserves to cover 100% of monthly consumption from July, bypassing Iran's Strait of Hormuz blockade.
Japan secured stable oil supplies through March 2028 by replacing Middle Eastern crude with US imports and releasing strategic stockpiles, Prime Minister Sanae Takaichi said Thursday, extending the previous outlook by a year as the Iran war cuts off 93% of the nation's traditional supply route.
"We have secured alternative supplies equal to 100% of the previous year's average monthly consumption volume for July," Takaichi told a cabinet meeting in Tokyo. July imports from the US are expected to exceed 10 times the prior year's monthly average, she added.
Japan began releasing the equivalent of about 50 days of domestic oil consumption on March 16, followed by roughly five days from joint reserves with oil-producing nations and a further 20 days' worth from May 1. As of June 8, the country held total stockpiles equivalent to 201 days of consumption — 107 days in government reserves, 92 in private stockpiles and three in joint reserves, according to the Ministry of Economy, Trade and Industry.
The extended supply horizon buys Japan time but highlights the severity of the Strait of Hormuz closure, through which 93% of its 2025 Middle Eastern crude shipments passed. Japan imported 94% of its crude from the Middle East last year, making it one of the most exposed developed economies to the Iran conflict. Takaichi said she will raise the issue at the G7 summit in France starting June 13, urging allies to ensure free navigation through key sea lanes and support strategic stockpiles across Asia.
US Imports Fill the Gap
Japan's pivot to American crude marks a structural shift in its energy procurement. July imports from the US will surge to more than 10 times the monthly average from the prior year, Takaichi said, as the nation replaces volumes that previously transited the Strait of Hormuz. The US has become the world's top oil exporter, a reversal from the 1973 Arab oil embargo when it was a victim of supply cuts, according to Reuters data.
The 80% coverage rate for June — lower than July's full replacement — reflects the lag in rerouting tanker contracts and securing new supply agreements. No additional releases from Japan's strategic reserves have been announced since the May 1 drawdown began, suggesting officials are confident the current trajectory will hold through the summer demand peak.
What's at Stake for Global Markets
Japan's ability to secure supply through March 2028 without depleting its strategic reserves offers a template for other Asian importers facing similar exposure. Singapore's oil product inventories recently slumped to a near 13-year low, while China has been seeking alternative suppliers from West Africa and the Middle East after US sanctions disrupted its usual channels.
The Iran war has effectively closed the Strait of Hormuz, through which about a fifth of the world's oil passes. Brent crude prices have remained elevated as traders weigh the risk of prolonged disruption against the potential for diplomatic resolution. Takaichi's European tour — including talks with British and Italian leaders before the G7 — signals Japan is pushing for a coordinated response among major economies.
This article is for informational purposes only and does not constitute investment advice.
