Energy bills set for steepest January rise in four years, forecaster warns

Household energy bills are poised for their sharpest January increase in four years, with the price of a typical annual tariff forecast to climb by £276, according to figures from the consultancy Cornwall Insight shared with the BBC.

The predicted 16% rise would land at the coldest point of the year, when heating demand is at its peak and many families are still recovering financially from Christmas spending. For the roughly 20 million households in England, Scotland and Wales that remain on variable tariffs, the increase would deliver the most significant upward move in the cost of keeping warm since 2022.

Those households sit on Ofgem's price cap, which limits the maximum charge for each unit of gas and electricity a supplier can bill. About 20 million homes in England, Scotland and Wales are covered by that arrangement, meaning they can switch provider at any time but remain exposed to the market rate set by the regulator.

Prices are already due to edge upwards this week, when the October cap takes effect. That rise, of about 4%, amounts to roughly £60 a year — or £5 a month — taking a typical annual bill for a dual-fuel household paying by direct debit to £1,723, assuming that level of pricing were sustained for a full twelve months. That increase would have been steeper had it not been for the government's cut to VAT on domestic energy, which shaves the equivalent of about £45 a year off a typical bill.

But the January forecast points to a far more painful jump. Cornwall Insight's modelling suggests the typical annual bill will rise to £1,999, with the figure calculated on the basis of updated typical household consumption values. The move would take prices to their highest level in more than two years, underlining the sense that the relative relief of recent months has been temporary.

"These prices are going to hit households hard. January is already a difficult month for many, with cold weather and bank balances still recovering from Christmas," said Craig Lowrey, principal consultant at Cornwall Insight.

Behind the forecast is disruption to gas supplies linked to the conflict in the Middle East, which has left storage levels across Europe unusually low as suppliers attempt to rebuild stocks ahead of winter. Lowrey warned that replenishing those reserves could keep wholesale prices — and therefore household bills — elevated "well beyond the winter", extending the pain rather than ending it in the spring.

Cornwall Insight has an established record of energy price forecasting and is regarded as reliable across both industry and political circles, with energy suppliers publishing similar projections. Its estimates therefore carry weight with ministers weighing what support to offer before the Budget.

The warning arrives a day before the October cap takes effect, adding to pressure on the government to come up with assistance for households likely to struggle. Among those calling for action is EDF chief executive Simone Rossi, who said the UK is "walking into a second energy crisis" and urged ministers to extend the VAT cut on electricity, which is due to expire on Thursday.

Whether the January increase proves as large as forecast remains uncertain. Ofgem will not publish its decision until late November, and an easing of Middle East tensions could reduce wholesale prices. However, Lowrey pointed out that the window in which the January cap is priced is already halfway through, meaning any improvement in market conditions is likely to arrive too late to influence the outcome. A substantial rise in January, he said, was "all but certain" for households not on a fixed deal.

For consumers on the ground, the prospect is daunting. Aaron Richards, from Maidenhead, has already begun trimming his spending to absorb rising costs. "I try to eat less takeaways, work more overtime, and try to budget a bit better, but at the same time, we shouldn't have to," he said.

Richards also drives a diesel car for his commute and is paying record high prices at the pumps, on top of his energy bills. "I just feel like everything's going up. How far is it going to go? Someone's got to step in," he said. He added: "I know people who can't afford to heat their house and they're struggling at the moment. Housing and eating are two of life's essentials that everyone should have. It shouldn't be a challenge to have any of those things."

Behind such accounts lies a mounting debt problem. Recent Ofgem data shows customers collectively owe more than £5bn in unpaid bills and charges to their suppliers, a legacy of years in which domestic energy prices have stayed stubbornly high. Ofgem has a proposed debt relief scheme on the table, but campaigners say the regulator has been too slow to act and are pressing the government to provide the funding needed to implement it.

Adam Scorer, chief executive of the fuel poverty charity National Energy Action, said the situation was "not sustainable, not just for households but also for the market as a whole". He called for the Budget to deliver additional targeted assistance for the households most at risk this winter, alongside action to clear energy debt and improve the least energy-efficient homes.

With official figures due in late November, households on capped tariffs have a fortnight to prepare — and campaigners warn that help for the worst-off will need to arrive well before the cold weather bites.