The disruption to shipping through the Strait of Hormuz after the U.S. and Israel attacked on February 28 has prompted a widespread re-evaluation of how nations secure the fuel that powers their economies. With Tehran effectively locking down the key shipping lane that carries a large share of Middle East petroleum to world markets, governments and companies are revisiting plans to lower dependence on imported oil and gas through a range of policy and market responses.
Officials and energy executives are considering measures that stretch from near-term demand management to structural changes in how electricity is generated. Proposals gaining traction include scaling up nuclear power and renewable generation, expanding strategic reserves, increasing domestic production where feasible, and diversifying the roster of foreign suppliers from which countries purchase oil and liquefied natural gas (LNG).
“The issue of energy security has never been as acute as now. Until a few weeks ago, markets took Gulf resources for granted. That will not be the case going forward,” said Geoffrey Pyatt, who served as assistant secretary of state for energy resources and is now a senior managing director at a U.S. consultancy. The sentiment underlines how the current crisis has reframed assumptions that had previously treated uninterrupted Gulf exports as a baseline condition for global energy markets.
Major energy-consuming nations have responded almost immediately. In a coordinated short-term move, a record-sized release of emergency stocks has been announced, while governments - particularly across Asia - have asked consumers to conserve energy. Such short-term interventions aim to blunt the impact of curtailed shipments and the spike in prices that followed the closure of Hormuz.
International agencies and market participants note the severity of the disruption. About 20% of the world’s oil and LNG supply has been affected by the shutdown of Hormuz, a channel described by some institutions as the worst interruption to global energy flows in history. The shock has pushed global crude prices above $100 a barrel, intensifying the political and economic pressure to find both immediate and longer-term solutions.
Policy shifts and technology choices
For some governments, the shock has revived longstanding debates over the role of nuclear energy in national power mixes. Europe, which in past decades reduced the share of nuclear power in its energy portfolio, has signaled a policy reversal: new financial guarantees are being proposed to support atomic power investments after years in which several member states closed reactors.
European Commission President Ursula von der Leyen framed the issue in stark terms, arguing that being “completely dependent on expensive and volatile imports” of fossil fuels leaves the region at a structural disadvantage. She described the long-term reduction of nuclear’s share in power generation as “a strategic mistake” and announced a 200 million euro guarantee intended to spur private investment in innovative nuclear technologies.
At the same time, leaders in Asia are weighing reactor restarts and broader nuclear planning as part of a mix that includes expanded renewables and strengthened gas storage. Taiwan’s economy minister said the island is reconsidering the restart of its last nuclear station - which closed in May - while affirming that any return to nuclear generation must be based on ensuring safety. Japan too has been discussing the potential restart of reactors shuttered since the Fukushima crisis, and politicians have urged Prime Minister Sanae Takaichi to accelerate policies that bolster the domestic nuclear industry.
China’s planning bodies signalled on the first day of the conflict that the country should speed up its renewable energy transition, enlarge emergency reserves and seek more energy from alternative suppliers. Chinese officials and domestic industry moves suggest a two-track approach: deploy more clean energy technologies while fortifying stockpiles and diversifying import sources.
Regional impacts and market responses
Asia has been particularly vulnerable because the region sources the vast majority of its oil and LNG imports from the Middle East. The supply cuts have translated into immediate operational effects: refineries in Singapore and Malaysia have scaled back processing runs and petrochemical firms in Japan and Taiwan have reduced deliveries to customers. Such interruptions ripple through industrial supply chains that depend on stable feedstock availability.
Several Asian governments and companies have signalled intentions to alter procurement strategies, including a greater use of the global spot market for LNG instead of exclusive reliance on long-term contracts tied to Middle Eastern suppliers. Officials in Japan, Taiwan, Bangladesh and Pakistan have publicly described plans to diversify import sources and to seek LNG purchases on the spot market as a way to manage the current disruption.
China’s situation contains both vulnerabilities and buffers. Sinopec, the country’s major refiner, has cut refinery processing runs by 10%, and Beijing has imposed a ban on fuel exports to prevent domestic shortages. Yet China benefits from comparatively large emergency oil reserves and a high rate of electrification: electric vehicles make up more than half of domestic new car sales, and more than half of the national grid’s power comes from renewables. Those factors have, to an extent, insulated it from the worst immediate effects of the Strait of Hormuz closure.
By contrast, the United States has a different exposure profile. As the world’s largest oil and gas producer, the U.S. is less worried about domestic shortages from the Hormuz disruption, and it imports only a small share of its energy from the Middle East. The administration’s priority has been on measures to tamp down global energy prices while the conflict is ongoing, because elevated fuel costs are a politically salient issue ahead of the November midterm elections.
Market and policy trade-offs
The shock has also prompted governments to reconsider earlier policy choices that reduced nuclear generation capacity. In Europe, the decline in nuclear’s share of power generation over the last 25 years - from about a third in 1990 to around 15% of the bloc’s total today - has reopened debate about whether that trajectory made the region more exposed to imported fossil fuel volatility.
To shield consumers and businesses from escalating energy bills, the European Union is drafting changes to its carbon market to try to curb CO2 prices and is exploring state aid measures such as subsidies and tax breaks. These actions illustrate the balancing act policymakers face: seeking to limit short-term economic pain while not undermining longer-term climate objectives.
The crisis has also produced pragmatic shifts in western policy toward Russia. The U.S. government has eased some sanctions to allow other nations to buy more Russian oil, in an effort to increase global supply and reduce price pressure. The move represents a reversal of earlier efforts to limit Russian oil revenues. Analysts say this recalibration could extend to western sanctions on Russian LNG if Europe and Asian importers continue to struggle from the loss of Middle Eastern shipments.
Political and strategic considerations
With the cost of the EU’s fossil fuel imports rising by 6 billion euros since the start of the war, political leaders are feeling the pressure to act. Lawmakers and executives have warned about becoming overly dependent on any single source of supply, whether that is pipeline gas from a neighbouring supplier or critical equipment and components for energy infrastructure sourced from abroad.
Some European voices caution about substituting one dependence for another. Bart Groothuis, a member of the European Parliament and vice-chair for the delegation for relations with Iran, argued that while Europe must reduce reliance on Russian gas and Middle Eastern supplies, there is a risk that an accelerated green transition could create heavy reliance on Chinese-made hardware and software for renewables, creating new vulnerabilities.
The crisis has, in turn, strengthened arguments across regions for expanding domestic capacity where possible, building resilient strategic stockpiles, and increasing flexibility in procurement arrangements. Officials involved in energy planning note that a combination of short-term actions - such as strategic releases and demand reductions - and longer-term structural shifts is necessary to reduce exposure to similar shocks in the future.
Sectoral effects and corporate responses
Immediate sectoral impacts have been visible in refining and petrochemicals, where curtailed feedstock availability has forced production cuts. Utilities and power generators are examining fuel mix and storage strategies, with renewed attention on gas storage facilities and the role of nuclear baseload in stabilising grids. Automakers and transportation planners are also watching the situation through the prism of electrification: higher oil prices tend to increase the appeal of electric vehicles in markets where they already make up a significant share of new-car sales.
Traders and commodity houses are reacting to the renewed uncertainty. “EU politicians are back on the backfoot,” a gas trader at a major commodity trading house said, comparing the present situation to earlier disruptions. “This looks like 2022 all over again.” The reference highlights how quickly market sentiment can pivot back to risk-aversion when physical supply routes are threatened.
Short-term relief and long-term planning
The coordinated release of emergency stocks has provided some immediate relief by adding supply to the market, and conservation appeals aim to reduce near-term demand pressures. Yet the crisis has also sharpened an ongoing policy debate: how best to marry climate goals with energy security objectives. For some policymakers, the current shock has strengthened the case for a diversified energy strategy that includes a larger role for nuclear and renewables, alongside measures to ensure adequate storage and resilient supply chains.
At the same time, the strategic calculus differs by country. The United States has prioritized measures to tame global prices and has adjusted sanctions so that more Russian oil can reach markets. China has combined supply-side responses, such as cutting refinery runs and banning fuel exports, with a long-term push to accelerate electrification and renewables deployment. Asian importers are moving to broaden their supplier base and open themselves to spot-market LNG purchases to reduce dependence on any single region.
Conclusion
The closure of a key maritime artery has forced governments, companies and markets to confront vulnerabilities in a global energy system built around the free flow of fossil fuels. While emergency measures have eased some immediate strains, the shock has reignited debates over energy policy choices made in recent decades and accelerated consideration of alternatives - including nuclear power, renewables, larger strategic reserves and broader supplier diversification. How individual countries and regions prioritize these measures will shape their exposure to future disruptions and influence both energy markets and broader economic conditions.
The path ahead will involve trade-offs between short-term affordability, long-term decarbonization goals and geopolitical concerns about supply security. For many policymakers, the recent events have made clear that energy policy can no longer treat uninterrupted access to Gulf resources as an assumption, and that new strategies will be required to mitigate similar risks going forward.