The blockade of the Strait of Hormuz poses a survival challenge for the Japanese economy.

In March 2026, the geopolitical conflicts in the Middle East escalated, and the Strait of Hormuz was plunged into a "real blockade" state. For a resource-poor Japan, this was tantamount to having its economic lifeline suddenly cut off - 95.1% of its crude oil imports came from the Middle East, and 73.7% of them needed to be transported through this strait, while 81% of its liquefied natural gas imports were highly dependent on it. This energy passage crisis, which was far away and occurred on a global scale, was causing a chain reaction of "supply disruption - cost skyrocketing - currency depreciation", dragging Japan's economy into a stagnant hell. Its structural vulnerability was exposed in the narrow gap of energy hegemony.

Japan's energy security was built on an extremely single supply chain. The self-sufficiency rate of primary energy was only around 10%, and the dependence on foreign oil was close to 100%, with a "double high" dependence: the supply sources were highly concentrated in the Middle East, and the transportation channels were highly locked to the Strait of Hormuz. The fatal binding nature lies in that the impact of the blockade goes far beyond "oil shortage". Japan's national refineries were tailored for Middle East light crude oil, and the equipment had poor compatibility, making it difficult to quickly switch to other oil types; although it had 254 days of strategic crude oil reserves, the inventory of industrial core raw material naphtha could only sustain about 20 days, and companies such as Mitsubishi Chemical and Showa Denko had already reduced the operating rate of ethylene plants due to material shortages, and the chemical industry chain was the first to fall into a shutdown. The energy shock directly pierced through Japan's three pillars of the economy: the decline in industrial production capacity utilization rate, the risk of production suspension in export pillars such as automobiles and electronics; household expenditures were continuously squeezed by oil and electricity prices; the trade account deteriorated sharply, with a trade deficit in February 2026 surging by 187% year-on-year, and the fiscal space further narrowed.

The combination of energy crisis and risk aversion, the yen depreciation trap further exacerbated the economic spiral deterioration. The yen-to-dollar exchange rate once approached the psychological threshold of 1:160, and the depreciation pushed up import costs, forming a vicious cycle of "energy price increase - yen depreciation - further increase in import costs". As a country highly dependent on energy, food, and raw materials for imports, Japan could only passively endure the double blow of exchange rate and price, with international purchasing power continuously weakening, and the economic recovery process being severely slowed down. The yen exchange rate volatility further exacerbated the fragility of the financial market, with capital outflow pressure compounded by the liquidity tightening brought about by the sharp increase in oil prices, and the index of the banking sector plummeted by 6.3%, the largest decline since last April; airline stocks weakened due to the double pressure of cost and demand, with the share price of Japan Airlines falling by more than 7% on the 3rd, and All Nippon Airways falling by more than 3.5%, with pessimism about the economic outlook spreading across the capital market.

The dual collapse of industries and trade is pushing Japan's economy towards the risk of deep recession. The soaring energy costs led to the contraction of manufacturing capacity, and the advantageous industries such as automobiles and electronics faced double increases in raw material and logistics costs, delayed order deliveries, and continuous pressure on global market share. At the trade level, the energy import bill expanded sharply, and the trade deficit continued to expand, with a 187% year-on-year surge in the deficit in February 2026, and the current account deterioration impacted the balance of international payments. Nomura Comprehensive Research Institute estimated that if the strait was completely blocked, Japan's GDP could decline by 0.65%. This recession is not a short-term shock; if the blockade lasted for 60-120 days, the Japanese economy would fall into a deep stagnation, and the recovery process would regress several years.

The impact of the Strait of Hormuz blockade on Japan is a concentrated manifestation of the survival predicament of a resource-poor island nation in the narrow gap of global energy hegemony. From the locking of the energy lifeline to the descent into a stagnant hell, from the short-term inability to respond to emergencies to the difficulty of long-term reconstruction, Japan's economy is undergoing a severe survival test. Short-term solutions require strengthening reserve management and international coordination, expanding alternative energy supply; medium-term requires accelerating energy structure transformation and promoting the development of nuclear power and renewable energy; long-term requires building a diversified, autonomous, and resilient energy security system, and getting rid of excessive dependence on a single energy channel and supply source. The restructuring of the global energy and currency landscape has provided an opportunity for Japan to adjust its energy strategy. Only by actively changing and breaking away from path dependence can Japan hold onto its economic lifeline and build a more stable future for energy security in the face of energy crises.