Ofgem signed off on an arrangement that blocks further capacity reductions on the interconnector with Belgium, effectively keeping that import route open even though it is not often called upon. The regulator is also taking feedback on a way to fund these types of standby arrangements. The logic is simple: the majority of British households rely on gas for heating and it supports electricity generation, but motivation to keep certain import infrastructure in service has ebbed as homegrown production declines and dependence on foreign fuel increases. As Ofgem put it, these pipelines "provide an important option during periods of particularly high demand, such as severe winter weather."
In a separate paper released Thursday, the watchdog warned that in "low-probability stress scenarios" - freezing conditions, very high gas use, and the loss of key infrastructure - the UK could run into a supply gap as soon as this winter without this intervention. "We therefore consider that timely action is needed to strengthen Great Britain's gas supply resilience," it said.
Security fears are higher after a string of attacks and suspected sabotage on European energy networks. The Nord Stream pipelines were destroyed in 2022, and Germany has dealt with repeated strikes on its power grid this year, including substation incidents in September that briefly took several plants offline. NATO has also flagged a pickup in Russian hybrid tactics, citing sabotage and cyberattacks on critical assets.
Layer on tight markets: UK and European gas benchmarks are at their highest since late 2022 amid Middle East supply disruption, and prices are nearly triple last winter's levels. Some countries, especially Germany, have gone into the heating season with unusually lean storage, leaving less protection against surprises or a cold snap.
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Britain still produces gas from the North Sea and a new field won approvals this week; however, the basin is aging and output is falling. That means heavier dependence on pipeline gas from Norway and global LNG cargoes. When demand surges, the UK at times sources gas from the EU via interconnectors to Belgium and the Netherlands.
Storage is the other weak spot. Compared with the biggest European countries, the UK's storage is much smaller - only about 12 days of typical winter consumption. Germany and France hold reserves measured in months, which makes seldom-used import routes more valuable to the UK when the system is tight.
Ofgem estimates that maintaining these interconnectors in ready mode would lift a typical household gas bill by about £1.19 per year for five years. The bottom line: the UK is paying a small, defined premium to keep emergency import options intact while domestic output wanes and external risks run high. For energy-exposed portfolios, that signals continued sensitivity to European infrastructure security, LNG flows, and winter weather swings.
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