Japan’s energy security is under significant strain as ongoing conflicts in the Middle East disrupt vital oil supplies. The Strait of Hormuz, a critical passage for over 90% of Japan’s crude oil imports, has become a focal point of concern due to recent geopolitical tensions.
Impact on Oil Imports
The Middle East accounted for 93.5% of Japan’s crude oil imports in 2025, according to the Ministry of Economy, Trade and Industry (METI). Disruptions in the Strait of Hormuz have led to concerns about potential shortages and increased energy costs. Former International Energy Agency (IEA) Executive Director Nobuo Tanaka emphasized the severity of the situation, suggesting that prolonged disruptions could necessitate the release of strategic oil reserves. [Source: S&P Global]
Government Response
In response to these challenges, Japanese Prime Minister Sanae Takaichi announced the release of 15 days’ worth of privately held oil reserves and one month’s worth of national oil reserves starting March 16, 2026. This measure aims to mitigate the anticipated decline in crude imports resulting from the Strait of Hormuz disruptions. [Source: S&P Global]
Looking Ahead
These developments underscore the importance of diversifying Japan’s energy sources and enhancing energy resilience. As the nation commemorates 15 years since the Fukushima disaster, the current crisis serves as a reminder of the vulnerabilities inherent in heavy reliance on imported fossil fuels. Exploring alternative energy sources and strengthening domestic energy infrastructure are crucial steps toward ensuring Japan’s energy security in an increasingly uncertain global landscape.