Japan Keeps Discovering the Same Lesson
There is a particular kind of institutional amnesia that afflicts great industrial democracies. They suffer a crisis, declare it a turning point, stand up task forces, publish white papers, and then — once the acute phase passes — quietly return to the arrangements that caused the problem in the first place. Japan has been performing this ritual with its energy dependency for fifty years.
The latest act opened on 7 May 2026. As Nikkei Asia reported that morning, Japan is navigating its most acute energy crisis since the 1970s, one triggered by the ongoing Iran conflict. Within hours of news that the United States and Iran may be nearing a ceasefire agreement, Japanese stocks jumped sharply — the Nikkei benchmark climbing on relief that the immediate supply-shock scenario might be averted. The market was, in effect, celebrating the possibility that normal order might resume. That response tells you everything about where Japan's energy policy actually stands.
The Familiar Emergency
Japan's vulnerability is structural, not incidental. The country imports approximately 90 percent of its crude oil, the vast majority of it from the Middle East. This dependency was the central fact of Japanese energy politics from the moment the first Arab oil embargo hit in 1973. Tokyo sent a prime minister to Tehran to beg for supply guarantees. It launched the State-Owned Petroleum Reserve program, the precursor to the current Japan Oil, Gas and Metals National Corporation stock pile. It mandated efficiency improvements across heavy industry. For roughly a decade, the structural dependency was treated as a genuine emergency.
Then came normalization. Oil prices fell. The geopolitical urgency receded. And slowly, incrementally, the diversification effort attenuated. Nuclear power — the most plausible non-fossil alternative at scale — became the subject of a political and public-confidence collapse following the Fukushima disaster of 2011. The share of nuclear in Japan's electricity mix, which had reached 30 percent before Fukushima, collapsed toward zero. The country that had declared energy independence the central objective of its 1970s industrial policy spent the subsequent decade substituting oil and gas imports for the zero-carbon baseload it had abandoned.
The Stock Market's Questionable Joy
The rally on 7 May is, in one reading, perfectly rational. A ceasefire would reduce the risk premium embedded in global oil prices, ease shipping-insurance costs through the Strait of Hormuz, and signal that the supply disruptions currently unsettling Japanese power markets may be transitory rather than permanent. Manufacturers running on thin inventory margins would welcome that relief.
But the rally also reveals something uncomfortable about how Tokyo has processed the lesson of every energy shock since Richard Nixon declared the petrodollar era. The market's enthusiasm is not for structural change — for investment in domestic renewables at the pace Germany or South Korea have attempted, for a serious nuclear restart program, for demand-side management that treats industrial electricity as a strategic resource rather than a commodity. The market's enthusiasm is for the return of cheap, reliable Gulf oil.
That preference has a certain cold economic logic. Fossil fuels are dense, tradable, and compatible with Japan's existing industrial infrastructure. A kilowatt-hour from a combined-cycle gas plant in Chita is, right now, cheaper and more dispatchable than one from a solar farm in Kumamoto with grid-integration challenges. But that logic is precisely what locks Japan into the cycle of crisis and response it has inhabited for half a century. Each time the Gulf destabilizes, Japan pays the price. Each time the Gulf stabilizes, Tokyo declares the crisis managed and returns to baseline.
What a Real Plan B Requires
The phrase "Plan B" has particular resonance in this context. Japan has invoked it, in various official documents, at least three times since 1973 — once after the oil shock, once after the Gulf War disrupted tanker traffic, and once after 9/11 raised questions about maritime-chokepoint security. Each Plan B was, in practice, a short-term supply-diplomacy initiative: emergency talks with Saudi Arabia, emergency inventories released from the SPR, emergency fuel-switching at power plants running on residual oil. None of them changed the underlying dependency.
A genuine strategic diversification would require choices Japan has historically avoided making. It would mean accelerating the nuclear restart beyond the cautious pace the governing coalition has sustained since 2013, accepting that the political cost of restarts is the price of energy security. It would mean investing in long-duration storage — flow batteries, compressed-air systems, green hydrogen — to make variable renewable generation a credible baseload contributor rather than a capacity-side supplement. It would mean treating the Green Transformation policy announced in 2022 not as a climate commitment but as a strategic necessity, and funding it accordingly.
It would also require a harder-eyed assessment of which diplomatic relationships are genuinely reliable in a moment of regional conflict. Japan's alliance with the United States provides a security umbrella; it does not provide an energy guarantee. The IEA framework offers coordinated emergency release mechanisms; it does not substitute for domestic strategic reserves sized to a six-month disruption rather than a ninety-day one.
The Structural Cost of the Cyc
The longer Japan defers genuine structural change, the more expensive each subsequent crisis becomes — not only in direct energy-import costs, but in the macroeconomic volatility that a commodity-import-dependent economy transmits to its growth rate, its currency, and its industrial competitiveness. The 1970s crises contributed materially to the end of Japan's high-growth era. The oil-price spike following the Ukraine invasion in 2022 pushed Japan's trade balance into deficit for the first time in years, contributing to the yen weakness that drove import-cost inflation across food and energy.
Each cycle compounds the previous one. The capital that might fund a serious energy transition gets absorbed instead by emergency fuel purchases and currency-defence operations. The political bandwidth for taking on nuclear-restart opponents gets consumed by short-term crisis management. The result is an energy system that is simultaneously expensive and fragile — paying the premium for fossil-fuel imports while remaining exposed to the geopolitical tail risks those imports carry.
The market rally on 7 May was understandable. It was also, in the most literal sense, a bet that the old arrangement will hold — that the Gulf will remain sufficiently stable, sufficiently productive, and sufficiently accessible to supply Japan's economy at manageable cost. That bet has paid off often enough in the past fifty years that it is easy to mistake a recurring gamble for a sound strategy. Japan has been here before. The question is whether this time, with the Iran conflict and the energy crisis it has produced, something finally shifts — or whether the market's relief proves, once again, to be a substitute for the harder work of building a genuinely diversified energy architecture.
The evidence, after five decades, argues against optimism. But the structural logic is clear enough that the argument for change does not require optimism — only a willingness to recognise that the next Gulf crisis is not a question of if, but when.
This publication noted the irony in framing the Iran-U.S. ceasefire prospects as a market-positive event: the relief reflects continued dependence on the same arrangements that have produced Japan's energy vulnerability across half a century.
Wire provenance
This editorial synthesis draws on the following public wire/social posts:
- https://t.me/nikkeiasia/12489
- https://t.me/nikkeiasia/12488