UK weighs intervention as official warning flags gas supply risks in the 2030s

Britain’s gas system is moving back to the centre of the policy debate after an official assessment warned that the country could face supply problems in the 2030s unless ministers act more aggressively to protect the network.

The warning, reported by The Guardian Business in its latest assessment of UK gas supply risks, says Great Britain could run short of gas even as the economy expands its clean energy capacity. The central concern is not an immediate national blackout, but a future system that becomes vulnerable if reserves continue to fall, infrastructure ages and a severe weather event arrives at the wrong time.

What the government assessment says

The government is now examining whether to provide direct financial support to parts of the gas sector in order to keep the system working over the long term. According to the consultation behind the assessment, a high stress scenario could leave homes and businesses without gas within the next decade.

That finding has pushed ministers to consider a range of measures aimed at reducing the risk that the market on its own will not prepare for rare but severe events. The concern is that low probability, high-impact disruptions may not be addressed quickly enough by the industry, especially as North Sea reserves continue to decline.

The consultation found that most respondents did not think the sector was likely to make the necessary preparations on its own. Three-quarters of respondents also agreed with a warning from the National Energy System Operator last year that there was an emerging risk to gas supply security. That warning suggested that by 2030 homes and businesses could be left without gas during a prolonged cold spell.

Why ministers are considering intervention

The options now under review could include financial support for owners of gas storage facilities and for pipeline operators. The idea would be to make it worthwhile to upgrade and maintain assets that may otherwise be too costly to keep in top condition for the decades ahead.

Energy minister Michael Shanks said the possibility of state support or direct investment would be highly unusual. He said any government intervention in the gas market would be unprecedented and not something ministers could accept lightly.

Shanks also stressed that the government still intends to cut Britain’s dependence on fossil fuels by expanding clean energy. But he argued that the transition away from gas will take time and that the existing system will continue to matter for many years.

In his words, the country has responsibilities to millions of homes that will still be heated by gas for years to come, to industries that depend on it for essential production, and to the wider power system, where gas continues to play a significant role.

The scale of the risk facing the system

The warning lands at a time when gas remains deeply embedded in the UK’s energy mix. Government figures show gas accounted for more than a third of total energy consumption last year.

At the same time, the direction of travel is clear. The Climate Change Committee expects gas demand to fall by just over three-quarters by 2050. Even so, domestic supplies are projected to decline more quickly than consumption, leaving the country more reliant on imports and more exposed to short-term disruptions.

North Sea production has been shrinking for a quarter of a century, and the government expects output to keep falling by around 5% a year. That ongoing decline is central to the concern that Britain could become less able to meet demand from domestic sources.

The energy system operator’s first official gas supply assessment identified several scenarios in which shortages could still occur even as the country shifts toward cleaner energy. The risks are most acute on colder than usual days, particularly if those days coincide with low storage levels in Europe or a sudden outage affecting a gas import terminal or pipeline.

What happens next

The government’s renewed focus on gas security comes as it prepares to make a decision on two controversial North Sea oil and gasfield proposals at Rosebank and Jackdaw. The timing matters because the broader political debate over drilling, supply security and the energy transition is converging.

The prime minister has already signalled a pragmatic approach to North Sea oil and gas. Speaking to journalists last month, he said there is a resource there and that it cannot be ignored while people are struggling.

Britain’s gas supply mix shows why ministers are uneasy. Over the past five years, North Sea fields have provided almost half of the gas used in UK homes and businesses. Norway has supplied just over a third. Tanker imports from the US and the Middle East have made up a fifth, while 1% has come by pipeline from continental Europe.

Shanks said the government wants to deliver a gas system that is fit for the future, maintains secure supply, gives consumers value for money and offers the sector enough certainty to keep investing in Britain’s energy infrastructure. For now, that leaves ministers trying to balance climate goals with a warning that the gas system may still need active protection long after the clean-energy transition has begun.