Concerns are mounting over potential increases in energy bills for British households and businesses this winter, as geopolitical instability, particularly in the Middle East, exacerbates a decline in natural gas storage levels across Europe. Analysts at energy research firm Wood Mackenzie have cautioned that the continent is approaching an energy crisis scenario, with gas storage levels hitting a historically low 54% capacity.
Typically, European gas storage facilities are refilled to around 70% of their capacity by this time in the summer to meet increased demand during the colder months. However, this year, even under the most favorable conditions, Europe is expected to enter the heating season with storage at 75% capacity, a significant drop from the five-year average of 90%. This situation is compounded by rising wholesale gas prices, which have already seen spot prices increase by over 50% from their June lows. The disruption stems partly from escalating conflict between the US and Iran, adding to existing market volatility.
Gas storage serves as a crucial buffer, balancing seasonal demand, mitigating supply disruptions, and stabilizing prices. Britain has nine active natural gas storage facilities with a combined capacity of 3.2 billion cubic meters. Low storage levels, combined with disruptions in key transit routes like the Strait of Hormuz, create a more precarious energy market. Wood Mackenzie indicated that these factors put winter 2026-27 supply security at risk, particularly as demand for liquified natural gas (LNG) in Asia rises despite production shortfalls in Qatar. Qatari gas production is not expected to return to full capacity until the latter half of the current year.
Wholesale gas prices have already surged by 43% in the past month, according to Uswitch.com. This is translating into higher costs for consumers, with the cheapest available fixed-rate energy deals increasing by nearly 8% in just two weeks. While these deals still offer savings compared to the current energy price cap, which limits charges for customers on standard variable tariffs, experts predict further increases. British Gas and EDF anticipate the October energy price cap to rise by 5.8% to approximately £1,760, marking the most expensive winter since the Energy Price Guarantee was in effect. Energy experts suggest that suppliers are already warning of another jump in the price cap in January.
Experts stress that if storage levels enter the heating season significantly below targets, Europe becomes more vulnerable to supply disruptions or periods of high demand, which invariably drive up wholesale gas prices. Daniel Hanlon, operations director at Volt Solutions Group, noted that sustained price increases would ultimately impact UK businesses and households as suppliers incorporate higher wholesale costs into future contracts. Massimo Di Odoardo, vice-president of LNG research at Wood Mackenzie, stated that low European inventories, robust Asian demand, and limited growth in new LNG supply make elevated prices through this winter and into 2027 almost certain. Furthermore, the EU faces a complex decision regarding its energy policy, with proposed bans on Russian LNG imports from January 2027 and stricter methane emission regulations potentially limiting import flexibility when it is most needed.