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🇯🇵Japan & the Strait of Hormuz

Japan is the world’s fourth-largest oil consumer and relies on imports for nearly all its oil supply. Approximately 80–90% of Japan’s crude oil imports transit the Strait of Hormuz, making it the most Hormuz-dependent major economy.

Energy Profile

Oil Consumption
~3.2 million barrels/day
Hormuz Dependency
80–90% of oil imports
Key Suppliers
Saudi Arabia, UAE, Kuwait, Qatar, Iran (historically)
Strategic Reserves
~175 days of net imports (government + private)
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Key Facts

  • Largest LNG importer in the world — most of it transits the strait
  • Post-Fukushima shift away from nuclear increased fossil fuel dependency
  • Government-mandated 90-day strategic petroleum reserve
  • Major refining capacity concentrated on the Pacific coast
  • Actively diversifying with Australian, Russian, and US LNG contracts

Vulnerabilities

  • Near-total dependence on maritime oil imports through a single chokepoint
  • Island geography eliminates pipeline alternatives
  • LNG and oil arrive via the same vulnerable sea lanes
  • Limited domestic fossil fuel production (less than 1% of needs)

Mitigations

  • Large strategic petroleum reserves (government + commercial)
  • Restarting nuclear reactors to reduce fossil fuel dependency
  • Diversifying LNG sources to include Australia, US, and Russia
  • Investment in renewable energy and hydrogen infrastructure
  • Active diplomatic engagement in Middle East stability
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Historical Context

During the 1973 oil crisis, Japan’s heavy dependence on Middle Eastern oil caused severe economic disruption and prompted the creation of its strategic petroleum reserves. The country has since invested heavily in energy efficiency — GDP energy intensity has fallen by over 40% — but remains fundamentally dependent on Hormuz oil flows. The 2011 Fukushima disaster reversed nuclear energy gains, pushing Japan back toward fossil fuel dependency.

Other Affected Regions