The war with Iran has already begun to push energy prices higher. For Europe, that is not a market tremor. It is an inflation risk. If disruption to oil and liquefied natural gas flows lasts more than two weeks, the eurozone could face a renewed and lasting rise in prices.
Inflation does not surge all at once. It builds. Energy prices rise. Electricity costs follow. Industrial bills increase. Wages adjust. By the time the debate turns to whether the shock is temporary, it may already be fixed into contracts and expectations.
European gas prices climbed sharply at the start of the week, at one point rising close to 50 percent in intraday trading. The move followed reports of disruption to liquefied natural gas production in Qatar after Iranian strikes. Oil prices also jumped, rising roughly 7 percent to about $78 per barrel, as markets reacted to instability around the Strait of Hormuz.
The Strait of Hormuz is one of the world’s most important energy corridors. Around one fifth of global oil consumption moves through it, along with about one fifth of global LNG trade, according to US Energy Information Administration data. When that passage is threatened, markets reprice risk quickly. When risk lingers, inflation follows.
Why two weeks matters
Markets react in hours. Economies react in weeks.
During the first phase of a conflict, energy prices often spike because traders are pricing uncertainty. Insurance costs rise. Futures contracts jump. But physical supply may still be flowing.
By the second week, that changes. LNG cargoes are rescheduled. Refineries adjust output. Utilities and industrial users lock in higher forward prices. The shock begins to move from trading screens into operating costs.
If the war with Iran lasts beyond two weeks with continued disruption to LNG production or shipping through Hormuz, the risk shifts from volatility to structure. At that point, inflation pressure becomes harder to contain.
How an energy shock turns into inflation
Step one: wholesale repricing. Europe competes in a global LNG market. When supply from the Gulf is threatened, prices rise worldwide.
Step two: electricity costs. Gas often sets the marginal price of power in Europe. Higher gas means higher power.
Step three: industrial impact. Energy intensive sectors such as chemicals and metals face higher input costs. Those costs are passed along or margins shrink.
Step four: consumer prices and wages. Transport and utility bills rise. Workers seek higher pay. Inflation expectations adjust.
The institutional warning
In December 2023, the European Central Bank published a scenario examining what would happen if conflict in the Middle East disrupted energy supplies through the Strait of Hormuz. In that stress exercise, oil prices rose from about $80 per barrel to roughly $130. Eurozone growth fell by around 0.6 percentage points. Inflation increased by more than 0.8 percentage points.
The exercise was not a forecast. It was a model of risk. But it offers a clear guide to the scale of the danger if disruption proves sustained rather than brief.
Inflation risk rises with time.
Week one: price spikes reflect uncertainty. The shock is treated as temporary.
Week two: contracts adjust. Businesses lock in higher costs. Expectations begin to shift.
Beyond two weeks: higher energy prices feed into wages, consumer bills and forward pricing. Inflation becomes embedded.
The broader economic impact
A prolonged disruption would do more than lift inflation. It would also slow growth. Higher energy import costs weaken household purchasing power. Manufacturers face renewed pressure after two difficult years. Financial markets could amplify the effect if equity prices fall or the euro weakens, making imported energy more expensive.
Europe enters this period with modest growth and limited fiscal room. Governments cannot easily offset rising energy costs with large subsidies. Monetary policy remains focused on keeping inflation expectations anchored.
What to watch
The decisive indicators are practical, not rhetorical: LNG production continuity in Qatar, shipping volumes through the Strait of Hormuz, and whether oil stabilises or continues to climb. If energy flows normalise quickly, the inflation spike will likely fade. If disruption persists into a third week, the risk of a renewed inflation cycle increases sharply.
Conclusion
The war with Iran is no longer only a geopolitical event. It is an inflation test for Europe. Energy markets have already reacted. The question now is duration.
If the conflict is contained quickly, the eurozone absorbs a temporary shock. If it drifts beyond two weeks with continued pressure on Gulf energy flows, the price surge risks becoming embedded in wages, contracts and expectations. At that point, Europe would not be facing volatility. It would be facing a renewed inflation problem.