Britain's Gas Reserves Plummet to Just Two Days as Iran Conflict Disrupts Global Shipping
Great Britain's natural gas storage has dwindled to a mere two days of supply, according to the latest figures from National Gas, the operator of the national transmission system. This significant decline comes as the escalating war between the US, Israel, and Iran has severely disrupted global shipping routes, forcing liquefied natural gas (LNG) tankers to divert away from Europe towards Asia.
Data released by National Gas shows that on Saturday, Great Britain held only 6,999 gigawatt hours (GWh) of natural gas in storage. This represents a sharp drop from the 9,105 GWh recorded at the same time last year. With maximum capacity equating to approximately twelve days of reserves, the current levels have raised serious concerns about the nation's energy security should the Middle East crisis intensify further.
Shipping Diversions and Price Surges
Ship-tracking data compiled by Bloomberg indicates that at least two LNG tankers have redirected from Europe to Asia since Friday, following three similar diversions last week. These reroutings are a direct consequence of Iran's effective closure of the Strait of Hormuz, a critical maritime chokepoint through which a fifth of the world's seaborne gas shipments typically pass.
The disruption has triggered a dramatic surge in gas prices across global markets. In the UK, month-ahead gas prices skyrocketed to 137p per therm last week, up from just 78.5p per therm before the conflict began. Similarly, LNG prices in Asia, which relies heavily on Qatari exports, have also soared. Qatar was forced to halt production at the world's largest LNG plant last week following a drone attack, exacerbating supply constraints.
National Gas Insists Storage Levels Are Seasonal
Despite the alarming figures, National Gas has moved to reassure the public, stating that Britain's gas storage levels are broadly in line with seasonal expectations. A spokesperson for the company emphasised that storage constitutes only a small component of the nation's diverse gas supply mix.
"Britain's gas storage levels are broadly in line with what we would expect at this point in the year and are comparable to this time last year," the spokesperson said. "It's important to remember that storage makes up only a small part of Britain's diverse gas supply mix. The majority of our gas comes from the UK continental shelf and Norway, complemented by LNG, interconnectors with continental Europe, and storage."
The company highlighted that Great Britain benefits from a wide range of supply sources, including domestic production, Norwegian imports, LNG shipments, and European interconnectors, which collectively provide the flexibility needed to balance supply and demand reliably throughout the year.
Storage Dynamics and Future Security Concerns
Gas injections into Britain's storage facilities have increased since 21 February due to milder temperatures, which typically reduce demand. Storage levels are market-driven and fluctuate annually, not being directly set by government policy. In contrast, mainland Europe maintains reserves equivalent to several weeks' worth of gas, though experts note that energy systems differ, with Britain utilising storage more flexibly.
While National Gas has expressed no immediate concern over short-term storage levels in salt caverns, the company has proposed a series of policies to safeguard Britain's future energy security in response to a government review. These measures include:
- Collaborating with industry to maintain and enhance flexible supply capabilities.
- Expanding LNG infrastructure and introducing floating storage units.
- Addressing systemic challenges such as declining North Sea production and increased import reliance.
Last month, National Gas warned that shifting demand patterns and growing dependence on imports are creating new risks. Jon Butterworth, the chief executive of National Gas, described the current situation as a "defining moment for Britain's energy security," underscoring the urgent need for strategic adaptation to ensure long-term stability.
