The escalation of military conflict in the Strait of Hormuz has delivered a sharp shock to global energy markets, with immediate consequences for British households. Natural gas prices have surged 18% in the past 48 hours, and Brent crude has breached $95 per barrel. For UK energy suppliers, who source a significant fraction of liquefied natural gas from the region, the cost pass-through is unavoidable.
Ofgem’s price cap, designed to protect consumers, will now recalibrate upward in the next quarter, adding an estimated £150 to the average annual dual-fuel bill. This is not speculation. The derivatives market is already pricing in a sustained premium.
The geopolitical risk premium on oil and gas has historically persisted for months after initial shocks, as seen during the 1990 Gulf War and the 2022 Ukraine invasion. However, the current crisis is distinct in its location. The Strait of Hormuz is the world’s most critical chokepoint, handling 20% of global oil and 15% of global LNG.
Iran’s ability to disrupt passage, even partially, directly constrains supply to European terminals. The UK, more dependent on gas for heating and electricity generation than most of its neighbours, is particularly exposed. National Grid’s projections show that if the crisis continues through winter, gas storage levels could fall to critical lows, forcing a return to coal-fired generation.
This is a grim irony for a government that has committed to net zero by 2050. The carbon intensity of UK electricity will rise, undermining progress on emissions reduction. But the immediate pain will be felt in households.
Energy poverty, already affecting 4 million British homes, will deepen. The Institute for Fiscal Studies estimates that the poorest 10% of households spend 10% of their income on energy, and this will now climb to 12%. The government faces a stark choice: intervene with direct subsidies, as during the 2022 energy crisis, or let market forces dictate hardship.
The Treasury is reportedly examining a windfall tax on North Sea producers, though this will do little to lower prices at the pump. Meanwhile, the energy transition narrative may suffer. Renewables, which would buffer the UK from fossil fuel shocks, still account for only 40% of electricity generation.
The remaining gap is filled by gas. Every delay in offshore wind and nuclear construction now carries a human cost measured in higher bills and colder homes. The scientific reality is clear: geological volatility will persist as long as we depend on unstable regions for energy.
The only durable solution is an accelerated shift to domestic renewables and storage. But that is a long-term fix. For now, millions of Britons must brace for winter bills that will strain budgets and test the social fabric of a nation already grappling with inflation and a cost-of-living crisis.
