Within hours of US and Israeli strikes on Iran on February 28, 2026, Brent crude surged toward $110 a barrel, European natural gas futures nearly doubled to around €55–58 per megawatt hour, and UK two-year gilt yields spiked 37 basis points in a single session, a move that rivalled the September 2022 turmoil triggered by the Liz Truss fiscal crisis. The speed and severity of these market reactions are not, by themselves, surprising. What is significant is that they represent Europe’s third major energy price shock in four years, and each iteration is proving more fiscally and monetarily corrosive than the last.
The Hormuz Chokepoint and Europe’s Structural Exposure
The Strait of Hormuz carries roughly 20% of globally traded oil and all liquefied natural gas exports from Qatar and the United Arab Emirates, together accounting for approximately 20% of global LNG trade. Since the first strikes on Iran, shipping through the Strait has slowed to a near standstill. Oil is globally priced, which means European consumers pay for a Hormuz disruption regardless of whether they source physical barrels from the Gulf. Europe’s most acute vulnerability, however, is LNG.
Europe entered this crisis with considerably less buffer than in prior years. Gas storage levels stood at 46 billion cubic metres at the end of February 2026, compared to 60 bcm at the same point in 2025 and 77 bcm in 2024. That storage deficit leaves the continent structurally exposed to any sustained curtailment of LNG flows, forcing European buyers back into spot markets to compete against Asian importers — precisely the dynamic that drove gas prices to record levels in 2021 and 2022. Storage refill operations running through spring and summer would face serious disruption if the conflict persists, placing compounding pressure on industrial energy costs heading into winter.
The economic consequences of that exposure are already measurable. Oxford Economics estimates that inflation in both the UK and the eurozone will be roughly 0.5 percentage points higher by year-end under even a relatively short-lived price shock scenario. The National Institute of Economic and Social Research (NIESR) models a wider range: a temporary shock pushes UK inflation 0.3 percentage points above its baseline, while a persistent one-year energy price increase of 30% for oil and 50% for gas would add approximately 0.7 percentage points to UK inflation in 2026, triggering a monetary policy response that NIESR estimates could raise interest rates by around 0.8 percentage points compared to its baseline, with GDP contracting 0.2% in 2026 and a further 0.3% in 2027.
The Monetary Policy Trap
The timing of this shock is particularly damaging for European central banks. The ECB ended its rate-cutting cycle in June 2025 as inflation returned to target, and markets had been pricing in further easing on the back of a fragile and uneven eurozone recovery. The Bank of England faced a similar trajectory, with two rate cuts expected in March and June before the conflict escalated. Both outlooks are now effectively suspended.
Markets briefly priced in the possibility of a Bank of England rate hike by December 2026, with a 57% probability assigned at the peak of the early March sell-off. As Nomura economists noted, the conflict solidifies the case for central banks to hold rates steady at a minimum, even as higher energy costs simultaneously weigh on growth. The ECB faces what ING economists characterised as a genuine dilemma: an oil shock pushes already sticky inflation higher while its growth outlook weakens under pressure from higher US tariffs on European exports. The result is a policy environment where rate cuts that would address slowing growth are constrained by inflation driven entirely by external supply shocks over which European policymakers have no direct leverage.
The fiscal dimension compounds the monetary bind. UK 10-year gilt yields surged back above 4.5% in the days following the conflict’s escalation, while sterling fell 0.8% against the dollar in a single session. Gilt underperformance relative to French, German, and US government debt reflects a market judgment that Britain is more exposed than most European peers to energy-price shocks, partly because of the structure of its electricity pricing system, which remains tightly linked to the marginal cost of wholesale gas even when the supply mix is substantially renewable. Each energy shock adds basis points to UK sovereign borrowing costs as investors price in the probability of further government support measures for households and firms, and the public finances are already carrying the debt accumulated from the 2022 intervention.
The Fiscal Exhaustion Problem
This is where the 2026 shock diverges most sharply from 2022. European governments entered that crisis with relatively more fiscal room and lower base rates. The cost-of-living support packages deployed across the EU and UK were expensive but financeable. Today, the OBR has already revised UK GDP growth downward to 1.1% for 2026, the public sector net borrowing trajectory is front-loaded with the meaningful consolidation backloaded to 2029–30, and defence commitments are consuming an increasing share of discretionary fiscal capacity following Russia’s invasion of Ukraine. Across Europe, the simultaneous demand on public finances from ageing populations, rearmament, and now a third energy shock creates a structural constraint on the scale of reactive household support governments can credibly deploy.
The political imperative has not diminished. The UK’s Labour government has consistently framed the cost of living as its primary economic concern, and Prime Minister Keir Starmer stated on March 9 that the government was assessing what it could do to limit the impact of rising energy prices. The tension between that political commitment and the available fiscal headroom is acute. Any grants or subsidies introduced to shield households from price spikes carry their own long-term costs: once deployed, they are politically difficult to withdraw, and their introduction signals to bond markets that borrowing is likely to increase, further lifting sovereign yields.
EU finance ministers meeting in Brussels in early March 2026 discussed coordinating the release of strategic oil reserves. France’s Economy Minister Roland Lescure confirmed that G7 finance ministers had agreed in principle to use any necessary tools to stabilise markets, including potential stockpile releases. Germany indicated support for keeping the option available while emphasising the current moment did not yet justify activation. The IEA, which requires member states to hold 90 days of import-equivalent oil stocks for precisely this scenario, has begun assessing whether coordinated release should be triggered. These are short-term pressure valves, not structural corrections, and their effectiveness diminishes rapidly if the conflict and Hormuz disruption persist.
What Diversification Has and Has Not Fixed
Europe’s energy diversification since 2022 has been real but partial. Renewable electricity generation has expanded substantially since Russia invaded Ukraine, and OECD analysis confirms a statistically observable relationship: EU member states with higher shares of wind and solar in their electricity mix tend to exhibit lower average wholesale electricity prices, consistent with the cost-suppressing effect of zero-marginal-cost generation on marginal pricing. WindEurope’s system-level modelling indicates that a renewables-led pathway remains the lowest-cost option for Europe’s power system even when the additional costs of grids, storage, and backup capacity are included.
The problem is that this progress has not yet translated into insulation from gas price shocks, particularly in Britain, whose electricity market design still prices electricity off the marginal gas unit during periods of high demand. Reforming that pricing structure is a known policy priority, but remains unresolved. Germany has built multiple LNG import terminals and is converting elements of that infrastructure toward hydrogen and ammonia, but its near-term gas exposure remains significant. The EU’s energy import bill surged from EUR 137 billion in 2020 to EUR 549 billion in 2022, and while prices moderated after that peak, the 2023 import bill remained well above historical levels, reflecting a permanent upward shift in the cost of fossil fuel dependence.
Five regulatory barriers consistently slow renewable deployment across EU member states, as identified by the OECD: unclear legal frameworks that deter market entry, insufficient remuneration for grid flexibility services, inadequate permitting systems, grid connection delays, and financing gaps for smaller developers. These are not insurmountable, but they require legislative and administrative reforms that national governments have been inconsistent in implementing. The EU’s Renewable Energy Directive III provides the formal framework; whether projects move from pipeline to operation depends on national-level execution that remains highly uneven.
The Structural Argument for Acceleration
The recurring pattern of external shock, emergency fiscal response, and debt accumulation is not fiscally sustainable at scale. The costs of the reactive model are now measurable across multiple dimensions: the sovereign borrowing premium that energy shocks add to gilt and bond yields, the inflation overshoot that delays rate cuts or forces tightening, the competitiveness losses that result from sustained high energy costs for European industry, and the political capital consumed by subsidy programmes that never quite fully compensate for household purchasing power losses.
The structural alternative is faster deployment of domestic generation, storage, and grid interconnection capacity, which progressively reduces exposure to the global gas price signal that transmits external shocks into European retail energy markets. The EU’s energy import bill and Europe’s dependence on traded fossil fuels remain the fundamental transmission mechanism by which conflict in the Gulf, pipeline disruptions from Russia, or LNG market tightening in Asia becomes a direct fiscal and monetary problem for European governments. Without reducing that exposure structurally, the fiscal and monetary costs of the next shock will be at least as severe as this one, and the capacity to absorb it will be further diminished.
