Japan Taps Strategic Oil Reserves as Strait of Hormuz Crisis Shakes Global Energy Markets

Japan has begun releasing oil from its emergency reserves as the global energy market faces renewed turmoil following the effective closure of the Strait of Hormuz, one of the world’s most critical oil shipping routes.

The disruption comes amid escalating conflict involving Iran, the United States and Israel, raising concerns over global oil supply and pushing crude prices sharply higher.

The Japanese government confirmed the release on Monday through a notice published in its official government gazette, signaling the start of one of the country’s largest-ever emergency energy interventions.

Japan’s decision follows an earlier agreement among member states of the International Energy Agency (IEA) to release oil stockpiles in order to stabilize global energy markets and cushion the impact of the escalating Middle East conflict.

The coordinated action comes as the conflict threatens to disrupt a vital corridor that normally transports around one-fifth of the world’s oil supply, a development that could have far-reaching consequences for global energy security.

For Japan, which relies heavily on imported fossil fuels, the disruption represents a direct threat to domestic energy stability.

Officials say the emergency release of oil reserves is designed to prevent shortages, stabilize fuel prices, and maintain steady supplies of petroleum products across the country.

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Strategic Reserves Activated to Stabilize Energy Supply

Japan’s government said the release of oil will begin with private-sector petroleum reserves, before potentially drawing further from government-controlled stockpiles if necessary.

According to government spokesman Minoru Kihara, Japan will initially release 15 days’ worth of private-sector petroleum reserves.

These reserves are held by refiners and energy companies under Japan’s oil stockpiling regulations, which require companies to maintain a minimum level of fuel reserves to guard against supply disruptions.

The government will temporarily reduce the mandatory reserve requirement for refiners and oil trading companies from 70 days to 55 days, allowing them to draw down part of their inventories to stabilize the domestic market.

Prime Minister Sanae Takaichi had previously announced that Japan intends to release approximately 80 million barrels of oil from its strategic reserves.

That amount is equivalent to roughly 45 days of domestic oil consumption, making it one of the largest releases in the country’s history.

Government officials say the oil will be sold to domestic refiners and wholesalers, ensuring that gasoline, diesel, and other fuel products remain available to consumers and businesses despite global supply disruptions.

The government also indicated that private-sector reserves would be released first, followed by state-held stockpiles if necessary.

Japan’s Minister of Economy, Trade and Industry, Ryosei Akazawa, said the government is closely monitoring global market conditions and stands ready to take further action if supply disruptions persist.

Global Oil Market Faces Severe Disruption

The emergency release comes as the global oil market experiences one of its most serious disruptions in recent years.

The Strait of Hormuz, a narrow waterway connecting the Persian Gulf to the Gulf of Oman, is one of the world’s most important oil transit routes.

Oil tankers carrying crude from major producers such as Saudi Arabia, Iraq, the United Arab Emirates, Kuwait, and Qatar must pass through this route to reach global markets.

Analysts estimate that approximately 20 percent of global oil supply moves through the Strait of Hormuz, making it one of the most strategically important shipping lanes in the world.

However, escalating military tensions between Iran and the United States and Israel have effectively halted commercial shipping through the strait.

The disruption has sparked fears of a prolonged supply shock and sent energy markets into turmoil.

Oil prices have surged in response to the uncertainty.

Brent crude, the global benchmark for oil prices, recently climbed above $104 per barrel, representing an increase of more than 40 percent since the conflict escalated in late February.

Energy traders and analysts warn that prices could continue rising if shipping routes remain blocked for an extended period.

The crisis has also raised concerns about broader economic consequences, as rising fuel costs can contribute to inflation, supply chain disruptions, and slower economic growth in energy-importing countries.

Japan’s Heavy Dependence on Middle East Oil

The situation is particularly concerning for Japan because the country depends heavily on oil imports from the Middle East.

According to the Petroleum Association of Japan, nearly 96 percent of Japan’s crude oil imports came from the Middle East in 2024.

This heavy dependence makes the country especially vulnerable to disruptions affecting oil shipments through the Persian Gulf.

Japan has limited domestic fossil fuel resources and relies on imports to meet the majority of its energy needs.

As a result, the stability of global shipping routes plays a crucial role in the country’s economic security.

To mitigate this vulnerability, Japan has built one of the largest strategic oil reserve systems in the world.

As of the end of 2025, the country held approximately 470 million barrels of oil reserves, equivalent to 254 days of domestic consumption.

These reserves are divided into several categories:

• Government-owned reserves held in national storage facilities
• Private-sector reserves held by oil companies and refiners
• Joint reserves stored in cooperation with oil-producing countries

Japan’s strategic petroleum reserve system was created in 1978, following the global oil shocks triggered by the 1973 Arab oil embargo.

Since then, the reserves have served as a critical safeguard against sudden supply disruptions.

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Coordinated Global Response Led by the IEA

Japan’s oil release is part of a broader international effort coordinated by the International Energy Agency.

The Paris-based energy organization announced earlier that its member countries had agreed to release 271.7 million barrels of government-managed oil reserves worldwide.

When combined with additional private-sector stockpile releases, the total coordinated response could reach 400 million barrels, making it the largest emergency oil release ever organized by the agency.

The IEA said the release would begin first in Asia and Oceania, where the immediate impact of supply disruptions is most severe.

Additional stockpile releases from Europe and the Americas are expected to begin later in March.

The goal of the coordinated release is to stabilize oil markets, reduce price volatility, and reassure global energy consumers that supplies will remain available despite the crisis.

IEA officials say the release demonstrates the ability of coordinated international action to respond to major supply shocks.

Strategic Reserves Can Only Provide Temporary Relief

Despite the scale of the global stockpile release, analysts caution that strategic reserves can only provide temporary relief if the conflict continues to disrupt shipping routes.

Yuriy Humber, CEO of Tokyo-based energy consultancy Yuri Group, said the reserves mainly serve as a short-term buffer.

“Strategic reserves can help stabilize supply and prices in the short term, but they mainly buy time,” Humber said.

“They cannot fully offset a prolonged disruption in the Strait of Hormuz.”

If the crisis continues, countries may eventually face the need to secure alternative supply routes or increase production from other regions.

Japan has already begun exploring additional sources of oil imports.

Officials from the Ministry of Economy, Trade and Industry (METI) say refiners are seeking supplies from the United States, Central Asia, South America, and other producers capable of bypassing the Strait of Hormuz.

Japan currently imports about 4 percent of its crude oil from the United States, a share that increased after the country significantly reduced purchases from Russia following the 2022 invasion of Ukraine.

Strategic Oil Releases Are Rare but Critical

The current release marks the seventh time Japan has drawn on its strategic oil reserves since the reserve system was created in the 1970s.

Previous releases have occurred during major global disruptions, including the 2011 earthquake and tsunami, which damaged energy infrastructure and disrupted supply chains.

The scale of the current release highlights the seriousness of the situation.

Officials say the planned 80 million barrel release is approximately 1.8 times larger than the volume released following the 2011 disaster.

Japan’s response also reflects broader concerns about energy security across Asia.

Many Asian economies rely heavily on imported fossil fuels, making them particularly vulnerable to disruptions in global shipping routes.

Military Tensions Add to Market Uncertainty

The crisis has also intensified geopolitical tensions around the Strait of Hormuz.

U.S. President Donald Trump has called on several countries, including Japan, China, South Korea, France, and the United Kingdom, to contribute naval support to reopen the vital shipping corridor.

However, Japan’s Defense Minister Shinjiro Koizumi told parliament that the country currently has no plans to deploy its navy to the region.

Instead, Tokyo appears focused on managing the economic impact of the crisis through strategic oil releases, supply diversification, and domestic market stabilization measures.

Outlook: Energy Security Concerns Intensify

Japan’s decision to release oil from its strategic reserves underscores the growing importance of energy security in an increasingly volatile geopolitical environment.

As long as the Strait of Hormuz remains disrupted, global oil markets are likely to remain under pressure.

For energy-importing countries like Japan, maintaining adequate strategic reserves and diversifying supply sources will remain critical priorities.

While emergency stockpiles can provide short-term relief, the broader crisis highlights the vulnerability of global energy markets to geopolitical shocks.

For now, the coordinated release of reserves by Japan and other IEA member countries is intended to buy time for the global economy while policymakers search for longer-term solutions to stabilize energy supply chains and restore normal shipping operations in the Persian Gulf.

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Photo Source: Google

By: Rosemary Wambui

18th March 2026