The energy price cap rise confirmed by Cornwall Insight and Ofgem this morning lands households with an average annual bill of £1,723 from October, a 3.6% increase that the regulator rounded to 4% in its public communications. That is £60 a year, or £5 a month, more than the current cap. What matters more is what comes next.
Bills were £1,663 under the July–September cap, itself the product of a 13% jump at the start of the summer. October’s rise is therefore the second consecutive quarterly increase, and the sequence is not finished.
The January Warning Cornwall Insight Isn’t Hiding
Cornwall Insight’s August forecast had pencilled in £1,729 for October before Ofgem confirmed the slightly lower £1,723. The firm now puts the January–March 2027 cap at £1,872, a further 9% rise. That figure breaks down as £910.58 for electricity and £961.57 for gas under current Typical Domestic Consumption Values, with an electricity standing charge of 55p per day at 28.33p per kWh, and a gas standing charge of 31p per day at 8.94p per kWh.
To put that in longer context: according to PA Media, the January 2027 forecast is 18% above the January 2026 price cap of £1,584. Households have been squeezed hard and fast.
The January figure will not be confirmed until November, and Cornwall Insight is careful to say wholesale market conditions could shift. But the direction of travel is not reassuring. Wholesale energy prices make up over 40% of the cap. Gas prices have spiked in recent weeks on mixed signals about the US-Iran conflict, a European summer heatwave, supply disruption in Norway, and strong Asian demand, leaving continental winter gas stocks at ten-year lows, according to Cornwall Insight. Even if the conflict ended immediately, colder weather and depleted reserves would likely keep prices elevated well into the new year.
The war’s fingerprints are on everything here. Reuters reported that shipping disruptions in the Middle East and reduced liquefied natural gas exports from Qatar have compounded the pressure on European gas markets. Brent crude stood at $72.80 a barrel before the conflict began in late February and is now trading around $90.
What the Energy Price Cap Rise Means for Bills, VAT, and the Politics
The government’s decision to remove VAT from domestic electricity bills from October is baked into today’s cap. Without it, Ofgem says the typical bill would be roughly £45 higher. Cornwall Insight’s earlier modelling suggested VAT removal saves a dual-fuel household around £44. It is worth being precise about the scope: the cut applies to electricity only, not gas. Since gas bills are rising 8% and electricity less than 1% as a result, the relief is partial.
Energy secretary Miatta Fahnbulleh said the government will keep looking at ‘what more we can do’ to protect families, and pointed to ‘fundamental reforms’ including renewable energy investment as a longer-term answer. She described the Iran conflict as the immediate driver of costs, and said she was ‘frustrated’ by its impact, declining to criticise Donald Trump directly.
Ofgem’s Neil Kenward defended the cap, noting that prices remain 52% below the 2022 peak when the government stepped in at £2,500, and that supplier profit margins run at just over 2.5%. Around 11 million households (35%) on fixed tariffs are unaffected by the October change.
The political noise around this energy price cap rise is louder than the numbers suggest it should be, partly because the numbers keep moving. The TUC wants a windfall tax on bank profits, arguing the bank surcharge was cut from 8% to 3% by the Conservatives in April 2023 just as bumper profits arrived alongside higher interest rates. Paul Nowak, TUC general secretary, said the rise ‘will be another hammer blow for those struggling to get by.’ Age UK wants the warm home discount raised to £200, noting it is worth roughly half what it was ten years ago. Money Wellness director Sebrina McCullough warned that the 3.6% increase effectively wipes out much of the VAT saving for those already behind on bills.
There is a business dimension that deserves attention too. Cornwall Insight reports that business energy costs have risen 25% since February 2026, as the Middle East conflict continues to push wholesale prices higher. Households are not suffering alone.
For those who can act, the options are narrowing. The cheapest fixed tariffs were around 14% below the price cap at the start of July. By the start of this week that gap had shrunk to about 3%. The Fuse Energy August 2026 Fixed (18m) V10 tariff currently averages £1,550 a year, £173 below the October cap, though that arithmetic changes the moment January pricing bites.
The autumn budget is the next credible moment for the government to announce structured support for vulnerable households, whether through a one-off payment, a social tariff, or some form of national energy guarantee. If the January cap lands at £1,872 as forecast, the political pressure to act will be considerably harder to manage than it is today.
