The Ofgem energy price cap for July to September 2026 is £1,862 a year for a typical dual-fuel household paying by direct debit. Cornwall Insight now forecasts the October to December 2026 cap at roughly £1,899 under current consumption values — a small rise of about £37 — but Ofgem is switching to new “typical use” figures that quote the same forecast as about £1,709. That headline drop is a measurement change, not a real saving. Ofgem confirms the official October cap by 26 August 2026.
What the energy price cap actually is
The single most misunderstood point about the price cap is that it does not cap your total bill. Ofgem caps the maximum price a supplier can charge for each unit of gas and electricity, plus the daily standing charge you pay just to stay connected. The widely quoted £1,862 figure is simply what a household using an assumed “typical” amount of energy would pay over a year at those rates. If you use more than typical, you pay more; if you use less, you pay less. There is no ceiling on the pounds that leave your account.
For July to September 2026, the direct-debit unit rates and standing charges (including 5 per cent VAT) are:
- Electricity: 26.11p per kWh, plus a 57.19p daily standing charge
- Gas: 7.33p per kWh, plus a 29.04p daily standing charge
Those standing charges alone add up to around £315 a year before you burn a single unit — which is why cutting usage helps, but can only take you so far.
The October 2026 forecast
Cornwall Insight, the analyst firm the whole industry watches, forecasts the October to December 2026 cap at approximately £1,899 a year for a typical dual-fuel direct-debit household under the current consumption values. That is a rise of roughly £37 (about 2 per cent) on the July level of £1,862, and around £258 more than the April 2026 cap of £1,641. In other words, bills that already jumped 13 per cent in July are set to edge higher still, not fall back, as we head into the coldest and most expensive quarter of the year.
This is a forecast, not a confirmed figure. Ofgem sets the October cap using wholesale prices over a three-month assessment window running from 19 May to 18 August 2026, and announces the official number by 26 August 2026. The forecast will move as that window fills in, so treat £1,899 as the best current estimate rather than gospel.
| Cap period (2026) | Annual cost (old values) | Change vs previous |
|---|---|---|
| April – June | £1,641 | — |
| July – September | £1,862 | +£221 (+13%) |
| October – December (forecast) | £1,899 | +£37 (+2%) |
Why the headline number may look like it drops
Here is the trap to watch for this autumn. Ofgem has updated its Typical Domestic Consumption Values (TDCV) — the assumed “average” usage the headline figure is built on — because households now use meaningfully less energy than they did at the last review in 2023. The new benchmark assumes about 7 per cent less electricity and 17 per cent less gas.
Because the yardstick shrank, the same underlying rates produce a smaller headline number. Under the new values, the July cap is quoted as roughly £1,663 rather than £1,862, and the October forecast as roughly £1,709 rather than £1,899. If you only glance at the headlines, October could look cheaper than July — falling from £1,862 to £1,709 — when in reality the unit rates are forecast to rise. Nothing about your actual bill changes because of the methodology; only the illustrative total does. When the October cap is announced, compare like with like: old-value figure against old-value figure, or new against new, never one against the other.
Why prices are still elevated
Wholesale energy makes up more than 40 per cent of the cap, and that is where the pressure is coming from. Gas prices climbed sharply earlier in 2026 amid conflict and disruption across the Middle East, which rattled global liquefied natural gas (LNG) supply and pushed up the price the UK pays on the international market. Britain relies heavily on gas both for heating and for setting the marginal price of electricity, so a shock in the gas market feeds straight through to both fuels.
Markets have calmed a little since the spring spike, but conflicting signals over shipping routes, uncertain repair timelines for damaged infrastructure and patchy diplomatic progress mean prices remain well above pre-2026 levels. That is why forecasters expect the cap to stay high through winter rather than snap back down.
Should you fix or stay on the cap?
With the cap forecast to rise again, a well-priced fixed deal is worth a serious look. The rule of thumb energy experts use is simple: a fix is worth considering if it is priced at, or just below, the current cap. Lock in a rate around today’s level and you protect yourself from the forecast October increase — and from any further shocks — for the length of the deal, usually 12 months. If wholesale prices later fall, you lose the chance to benefit, so it is a trade of certainty for potential upside.
Fixed and discounted-variable deals have been available below the current cap through 2026, some priced a few per cent under it, and there is usually no exit-fee penalty on the best ones if you want the flexibility to leave. Before you commit, dig out a recent bill, check your actual annual kWh use rather than relying on the “typical” headline, and compare the unit rates and standing charges of any fix against what you pay now. A deal that looks cheap on the annual estimate can still be poor value if its standing charges are high and you are a low user.
| Stay on the cap | Fix at/just below current cap | |
|---|---|---|
| Rate certainty | Changes every 3 months | Locked for the deal term |
| If prices rise (as forecast) | You pay the increase | You are protected |
| If prices fall | You benefit automatically | You miss the fall |
| Best for | Those expecting falls | Those who value certainty |
Concrete ways to cut your bills before winter
Whether you fix or not, the surest way to spend less is to use less — and small changes stack up before the cold sets in. A few of the highest-impact moves:
- Submit a meter reading around any cap change so you are not billed at new higher rates for energy you used earlier.
- Service and bleed your heating system now, and turn the boiler flow temperature down to around 55–60°C on a combi — it can cut gas use noticeably with no loss of comfort.
- Draught-proof doors, letterboxes and floorboards; it is cheap and pays back fast on heat you would otherwise lose.
- Target the biggest electricity users — tumble dryers, older fridges, and always-on devices — and run washing at 30°C.
- Check you are on the best payment method; direct debit is cheaper than paying on receipt of bill or by prepayment for most tariffs.
- See if you qualify for support such as the Warm Home Discount or a supplier hardship fund if bills are a struggle.
Plan your winter energy spend
Because the cap changes quarterly and winter usage is far higher than summer, it pays to map out what your energy could cost across the colder months rather than being caught off guard by the December and January bills. If you want the background on how we got here, our breakdown of the Ofgem energy price cap in April 2026 shows where the lower £1,641 level came from, and our full guide to cutting energy bills in 2026 goes deeper on room-by-room savings. To turn all of this into a realistic monthly figure, drop your estimated energy cost into our free budget planner alongside your other bills, so you can see whether you need to set a little more aside each month before the October cap lands.
Frequently Asked Questions
What is the energy price cap in October 2026?
Cornwall Insight forecasts the October to December 2026 cap at about £1,899 a year for a typical dual-fuel direct-debit household under the current consumption values, up roughly £37 on the July level. Under Ofgem’s new consumption values the same forecast is quoted as about £1,709. Both are forecasts; Ofgem confirms the official figure by 26 August 2026.
Why does the October cap look lower than July under the new values?
Because Ofgem has cut the assumed “typical” usage its headline figure is based on — about 7 per cent less electricity and 17 per cent less gas. A smaller yardstick produces a smaller total even though unit rates are forecast to rise. The July cap under new values is around £1,663 and October around £1,709, so October is still higher — you just cannot compare a new-value figure with an old-value one.
Does the price cap limit my total bill?
No. The cap limits the maximum price per unit of gas and electricity and the daily standing charge, not the overall amount you pay. If you use more energy — for example during a cold winter — your bill will be higher than the quoted “typical” figure. Use less and you pay less.
Should I fix my energy tariff now?
If a fixed deal is priced at or just below the current cap, fixing protects you from the forecast October rise for the length of the deal, usually 12 months. The trade-off is that you will not benefit if wholesale prices later fall. Check your actual annual usage and compare unit rates and standing charges before committing.
When will Ofgem announce the October 2026 cap?
Ofgem sets the October cap using wholesale prices over an assessment window running from 19 May to 18 August 2026 and announces the confirmed figure by 26 August 2026. Until then, the £1,899 number is a forecast that will move as the window fills in.
Why are energy prices still high in 2026?
Wholesale gas, which drives more than 40 per cent of the cap, rose sharply after conflict and disruption in the Middle East strained global LNG supply. Prices have eased from the spring peak but remain well above pre-2026 levels because of ongoing uncertainty over supply routes and infrastructure, keeping the cap elevated through winter.
Last reviewed: July 2026. This article is for general information only and does not constitute financial advice. Energy price cap figures are forecasts until Ofgem confirms them — always check ofgem.gov.uk and your supplier for current rates.
