What happened
Ofgem confirmed on 26 August that the energy price cap for a typical household paying by direct debit will rise to 1,723 pounds a year from 1 October until 31 December, an increase of 60 pounds or about 4 percent. The cap is not a limit on your total bill. It is a limit on the unit rate you can be charged per kilowatt hour of gas and electricity, plus the daily standing charge, so a household that uses more than the typical amount will pay more than 1,723 pounds.
The increase is not spread evenly. Gas costs are rising by around 8 percent, while households that use no gas at all will see an increase of less than 1 percent. That split matters because roughly 80 percent of British homes heat with a gas boiler, and this is the quarter in which the heating goes back on.
The driver is wholesale gas prices, which have risen through the year as conflict in the Middle East disrupted global energy flows. Britain no longer buys much gas directly from the affected region, but gas is priced on a connected international market, so a shortage anywhere raises the price everywhere.
The rise would have been steeper without government action. Ministers have removed VAT, the 5 percent sales tax applied to domestic energy, from electricity bills between 1 October 2026 and 31 March 2027. Ofgem estimates the cap would have been roughly 45 pounds higher without that intervention.
Why it matters
The cap covers roughly 22 million households on default or standard variable tariffs. A further 11 million or so, about 35 percent of households, are on fixed deals and will not see any change until their fix expires. If you have never actively chosen a tariff, you are almost certainly in the first group.
Energy is one of the most heavily weighted items in the inflation basket, so the October increase feeds directly into the headline inflation figure. UK inflation ran at 2.9 percent in July, up from 2.6 percent in June, and forecasters expect it to peak around 3.6 percent this month as energy costs work through. That is well above the 2 percent target the Bank of England is legally required to aim for.
This creates a genuine bind for policymakers. Higher energy bills leave households with less to spend on everything else, which weakens the economy. But because they also push measured inflation up, they make it harder for the Bank of England to cut interest rates in response. Weak growth and rising prices arriving together is the least comfortable combination a central bank can face.
There is a distributional problem too. Energy is a necessity, and lower income households spend a far larger share of their income on it. A 60 pound annual rise is a rounding error for some budgets and a serious problem for others.
Explained simply
The price cap works like a speed limit rather than a fixed fare. It caps how much you can be charged per unit of energy, but if you drive further, you still pay more.
Ofgem sets the cap every three months by adding up what it costs a reasonably efficient supplier to serve a customer. That includes the wholesale cost of buying the gas and electricity, the cost of the pipes and wires, the cost of running the company, government levies, and a small allowed profit margin.
The largest single ingredient is the wholesale cost, and suppliers buy that energy in advance rather than on the day. This is why the cap moves with a lag. The October figure reflects wholesale prices over an observation window that ran through the summer, which is when Middle East disruption pushed gas markets higher.
The 1,723 pound figure is an illustration, not a bill. Ofgem calculates it for a household using 2,700 kilowatt hours of electricity and 11,500 kilowatt hours of gas a year. Use half that and you pay far less. Use double and you pay far more, because only the rate is capped, not the total.
Standing charges are the part people find most frustrating. These are fixed daily fees you pay simply for being connected, regardless of usage, so a household that uses almost nothing still faces a bill.
What it means for you
Check whether you are on a fixed tariff or the standard variable tariff. If you do not know, look at your latest bill or log into your supplier account. Only the second group is affected in October.
Fixed deals are worth comparing seriously this autumn. Because the cap has been rising, several suppliers have been offering twelve month fixes at or slightly below the new October level. A fix that beats 1,723 pounds on equivalent usage removes the risk of a further increase in the January cap, which is currently the quarter forecasters worry about most.
Submit a meter reading on or around 30 September. That forces your supplier to bill your September usage at the cheaper old rate rather than estimating and applying the higher rate retrospectively. It takes two minutes and can be worth a meaningful sum on a large bill.
If you are struggling, contact your supplier before you miss a payment rather than after. Every supplier is obliged to offer a repayment plan you can afford, and several run hardship funds. The Warm Home Discount and Winter Fuel Payment schemes remain open to eligible households, and Citizens Advice can check entitlement for free.
The bigger picture
The cap was introduced in 2019 to stop suppliers overcharging loyal customers who never switched. It was designed for a stable market and then met the most volatile energy period in modern British history, peaking above 4,000 pounds before government support in early 2023.
At 1,723 pounds, bills are far below that peak but still roughly 50 percent above pre 2021 levels. The uncomfortable reality is that this now looks like the new baseline rather than a temporary spike, because it reflects a structurally tighter global gas market rather than a one off event.
The next announcement, covering January to March 2027, is due in late November. That is the quarter with the highest consumption, so it is the one that hurts. Watch wholesale gas prices between now and then, and watch whether the VAT cut is extended beyond March.
