Exposed Again: Germany, European Energy Security, and the Lessons of the Iran Conflict

Text

The closure of the Strait of Hormuz in March 2026 triggered the largest oil supply disruption ever recorded, and confronted Germany with a third major energy security test in less than five years. A new analysis by adelphi examines the cascading consequences for German industry, European supply policy, and the long-term future of the Energiewende.

When U.S. and Israeli forces launched their military attack “Operation Epic Fury” against Iran on 28 February 2026, global energy markets did not need long to respond. Within days, Iranian forces had declared the Strait of Hormuz, the narrow chokepoint through which roughly 20 per cent of the world's seaborne oil trade passes, effectively closed. Global oil supply fell by 10.1 million barrels per day in a single month, the sharpest decline in the history of recorded energy markets. European gas benchmark prices nearly doubled within weeks. And Germany, still in the early stages of an economic recovery, found itself dangerously exposed.

Image

Text

A diversification strategy with a structural blind spot

Europe had spent three years rerouting its energy supply away from Russia following the 2022 invasion of Ukraine. By 2025, Norway was Germany's largest gas supplier, and the United States its primary source of liquefied natural gas (LNG). The diversification was real, but it was incomplete. The shift from Russian pipeline gas to LNG simply exchanged one geopolitical dependency for another: a fuel that must transit global shipping lanes, and that is therefore subject to exactly the kind of maritime disruption the Strait closure created.

When Qatari LNG tankers stopped transiting the Gulf in March 2026, Europe's new supply architecture proved no more resilient than the old one. EU gas storage, already depleted to 46 billion cubic metres (bcm) at the onset of the conflict, down from 77 bcm two years prior, offered little cushion. The episode confirms what energy analysts have long argued: supply diversification is a necessary but insufficient response to structural import dependency.

Image

Quote (without marks)

The Iran conflict did not create another Germany's energy vulnerability, it exposed it, again. No diversification strategy is sufficient while fossil fuels transit chokepoints beyond our control. Accelerating the energy transition is the only credible security policy.

Text

German industry at an inflection point

For Germany's industrial base, already under pressure from years of elevated energy costs, the Iran conflict has arrived at a particularly difficult moment. Unlike 2022, when the primary fear was physical scarcity and the risk of gas rationing, the current crisis manifests primarily through price: companies are not running out of energy, but they are paying substantially more for it.

The consequences are especially visible in the chemical industry, Germany's third-largest industrial sector and a critical upstream supplier across the economy. The German Chemical Industry Association (VCI) reported in late May 2026 that production, sales, and prices all fell in the first quarter, with little prospect of near-term recovery. Crucially, several chemical companies are now accelerating investment in facilities abroad: a structural shift that, if sustained, could have lasting consequences for Germany's industrial base that go well beyond the current crisis.

The automotive sector has so far reported more limited direct impact, but analysts caution that this may reflect a lag rather than an exemption, companies drawing on inventory buffers and forward contracts will begin to feel the full force of input cost increases over the coming quarters.

Image

Text

Shipping rerouting and the risk of a permanent new normal

A less-discussed but potentially lasting consequence of the Strait closure is its effect on global shipping. With the Strait effectively shut, carriers have rerouted vessels around the Cape of Good Hope, adding 10 to 14 days to Asia–Europe voyages, and doing so on top of Red Sea diversions already in place since the 2023–24 Houthi attacks. Freight rates and war-risk insurance premiums have risen sharply as a result. Logistics specialists warn that this rerouting risks becoming entrenched: if war-related insurance clauses continue to deter transit even after a formalised ceasefire, Europe's importers could face structurally higher operating costs for years to come.

Image

Text

The outlook: sequencing is everything

As of June 2026, German gas storage stands at approximately 26 per cent of capacity, a level last recorded during the acute crisis of 2021–22. The Bundesrat has described this as the "Achilles' heel" of the energy sector for the coming winter, and analysts warn of potential supply shortfalls if temperatures fall sharply in early 2027.

Against this backdrop, the Iran crisis is generating renewed political momentum for the energy transition, reframing renewables not primarily as a climate instrument but as a prerequisite for economic security. European Commission President von der Leyen has argued that the EU's portfolio of renewable and nuclear energy provides "independence, predictability and energy security." The ifo Institute and Germany's leading economic research bodies have similarly concluded that "only an energy supply based on renewable energies can provide the necessary resilience for industry" in the long term.

Yet the same crisis is also generating pressure for measures, emergency fossil fuel contracts, coal plant life extensions, delayed infrastructure write-downs, that could create new lock-ins inconsistent with medium-term decarbonisation commitments. Managing this tension between immediate supply security and long-term structural transformation is, arguably, the defining energy policy challenge facing Germany and the EU over the next three to five years.

The central lesson is straightforward: structural energy vulnerability cannot be addressed by supply diversification alone. As long as an economy's industrial base, transport, and heating depend on fossil fuels transited through maritime chokepoints it does not control, it will remain exposed to exactly the kind of shock the Iran conflict has delivered. Whether that lesson now translates into sufficiently rapid and consistent policy action is the defining question of the years ahead.”

Image