Wednesday's price cap: how to work out your own figure

Ofgem publishes the October price cap on Wednesday 26 August 2026. The headline figure is based on typical usage values that Ofgem reduced on 1 July. You can work out your own figure from your bills.

Energy bills · Buzz Money Coach reacts · 24 August 2026

Reacting to BBC News business reporter Lucy Hooker's report of 23 August 2026, “Struggling households need more help with bills, energy industry says”, in which industry body Energy UK calls for the £150 Warm Home Discount to be replaced with a better-targeted scheme before winter. We have checked the figures in this piece against Ofgem's published unit rates for 1 July to 30 September 2026, Ofgem's review of typical domestic consumption values decision of May 2026, the GOV.UK announcement “New PM cuts tax on household electricity bills”, and the GOV.UK Warm Home Discount guide. All were read directly on 24 August 2026.

Our view: Energy UK is right that a flat £150 for households on certain benefits does not reach everyone who uses a lot of energy. No redesign will arrive before this winter. The headline on Wednesday will be Ofgem’s unit rates multiplied by an assumed household usage, and Ofgem changed that assumption on 1 July.

Why the headline figure fell by £199

The energy price cap does not cap your bill. It caps the unit rates and standing charges a supplier can charge on a standard variable tariff, and it covers around 33 million households in England, Wales and Scotland. To turn those rates into the single number everyone quotes, Ofgem multiplies them by a hypothetical household's annual usage — its typical domestic consumption values.

From 1 July 2026, following its published review, Ofgem cut those values. Electricity fell from 2,700 kWh a year to 2,500 kWh. Gas fell from 11,500 kWh to 9,500 kWh. Homes use less than they did, so the headline for this quarter can be quoted two ways, depending on which usage values are used.

Worked example: the same prices, two headlines

Built from Ofgem's published cap rates for 1 July to 30 September 2026 — electricity 26.11p per kWh plus 57.19p a day standing charge, gas 7.33p per kWh plus 29.04p a day. Direct debit, Great Britain average.

  • On the old assumption (2,700 kWh electricity, 11,500 kWh gas): electricity £704.97 + £208.74 standing = £913.71. Gas £842.95 + £106.00 standing = £948.95. Total £1,862.66.
  • On the new assumption (2,500 kWh electricity, 9,500 kWh gas): electricity £652.75 + £208.74 standing = £861.49. Gas £696.35 + £106.00 standing = £802.35. Total £1,663.84.

The unit rates and standing charges are identical. The £198.82 difference in the headline comes from the change in usage values; prices did not fall.

Standing charges are £314.74 a year, payable before you use any energy, and using less does not reduce them.

What Wednesday changes for a family household

The forecast in circulation comes from energy consultancy Cornwall Insight, which predicts the cap will rise by about 4% from 1 October — the second consecutive increase after a sharper 13% rise in July, driven by wholesale prices reacting to the conflict in the Middle East and to European heatwaves pushing up demand for cooling. Ofgem confirms the figure on Wednesday.

Alongside it, VAT on domestic electricity drops from 5% to 0% from 1 October 2026, which the government says takes around £45 off the annual price cap. It applies to electricity only — not the gas that heats most homes. And it is temporary, running only to 31 March 2027.

Worked example: a family household

Illustrative. A three-bedroom semi with gas central heating, two working adults and two school-age children, using 3,300 kWh of electricity and 12,000 kWh of gas a year — above Ofgem's typical figures, as most family homes are. Priced at Ofgem's published July–September rates, then adjusted for the October forecast.

  • Today: electricity £861.63 + £208.74 = £1,070.37. Gas £879.60 + £106.00 = £985.60. Annual total £2,055.97, or about £171 a month.
  • That is £392 a year more than the £1,663 figure in the headlines. The difference comes from higher usage.
  • Cornwall Insight's forecast 4% rise: adds about £82 a year, taking them to roughly £2,138.
  • The VAT zero-rating: their electricity at the new level is about £1,113 including 5% VAT, so removing it is worth about £53 a year, but about £29 in practice, because the zero rate covers six months.

Net position: roughly £53 worse off across the year, and the increase falls in the months they use most. Their direct debit may rise in November.

Run the same arithmetic on Ofgem's typical household and the pattern holds: a 4% rise adds about £67, the VAT cut hands back about £43 on an annualised basis, and the household still ends up slightly worse off than today. The VAT cut offsets most of the increase.

Energy UK's proposal

The Warm Home Discount is £150 off your electricity bill, paid to households on means-tested benefits, and GOV.UK confirms the scheme reopens in October 2026. Energy UK says it reaches six million customers — and that a further 2.5 million households need help they do not get, because a medical condition or a draughty home means they burn far more energy than their income suggests. The body's proposal is a £1.9bn targeted social discount worth up to £450 to some households, roughly double the cost of the current scheme.

Two numbers explain why that argument is being made now. Ofgem reported that customers behind on their energy bills owed suppliers a record £4.7bn by the end of last winter. And, as National Energy Action's chief executive points out in the BBC piece, the Warm Home Discount has risen by just £10 in a decade while the bills it offsets have moved by hundreds of pounds.

It is a proposal with no government commitment, and it would need data-sharing between benefit, health and energy-consumption records that does not currently exist.

Four things to do before 1 October

  1. Submit a meter reading dated as close to 30 September as you can. Without a reading, your supplier estimates how your usage divided between the old rates and the new ones. Photograph the meter with the date visible. Smart meters send readings automatically.
  2. Work out your own annual figure. Take last year's kWh from your bills or your online account, and price them at the rates in the box above — or at your own region's rates, which Ofgem publishes by area and payment method. Use it to plan, to compare a fixed deal and to check your direct debit. Our guide to cutting your household bills covers other household bills.
  3. Check the name on the electricity account against the name on any benefit claim. The Warm Home Discount is applied automatically by matching two sets of records on a fixed date; if they disagree, nothing arrives and nobody tells you. See £150 off your winter electricity bill turns on one date.
  4. If you are already in arrears, speak to your supplier this week. Energy UK says suppliers operate hardship funds, debt write-off schemes and charity partnerships. You are entitled to a payment plan you can afford, and arrears are smaller before winter usage begins.
If you cannot pay your bills now. MoneyHelper, StepChange and National Debtline give free, independent debt help today. Buzz Money Coach provides money coaching, not regulated financial advice. Choosing a tariff or supplier is your decision, made against your own numbers.

What is still uncertain, and when you will know

Wednesday 26 August 2026 — Ofgem publishes the cap for 1 October to 31 December, and the 4% stops being a forecast. 1 October 2026 — the new rates and the VAT zero-rating both begin. Late November 2026 — Ofgem announces the January to March 2027 cap, which is the one that governs the coldest, most expensive quarter of the year. 31 March 2027 — the VAT zero rate on electricity expires unless it is extended, and GOV.UK says decisions on longer-term measures come at the Budget.

Still open: whether Energy UK's targeted social discount ever exists, whether the Warm Home Discount rises above £150 for a scheme that reopens in weeks, and where wholesale prices go next.

Your bill is your usage multiplied by a published rate, plus a standing charge. Work out your own figure from your bills this week. Our reaction to July’s inflation figures, inflation at 2.9% and gas up 14.7%, shows how far an average can sit from one household’s costs, and our survival budget helps if this winter is going to be tight.

Questions and answers

When exactly does Ofgem announce the October energy price cap?

Ofgem publishes the cap for 1 October to 31 December 2026 on Wednesday 26 August 2026, and the new rates take effect on 1 October. Ofgem sets the cap every three months, using a twelve-week window of wholesale market prices that closes several weeks before the announcement. Until Wednesday, every October figure in circulation is a forecast: energy consultancy Cornwall Insight has predicted a rise of about 4%. The January to March 2027 cap follows the same pattern and is due to be announced in late November 2026.

Why did the headline price cap figure fall from £1,862 to £1,663 when prices went up?

Because Ofgem changed the usage values behind the headline; the prices did not fall. From 1 July 2026 Ofgem cut its typical domestic consumption values from 2,700 kWh of electricity and 11,500 kWh of gas a year to 2,500 kWh and 9,500 kWh, following its published review decision, because homes use less energy than they did. Run the same Ofgem unit rates through both assumptions and you get £1,862.66 on the old basis and £1,663.84 on the new one. The unit rates are identical either way, and your own bill did not change because of it.

Does the VAT cut on electricity mean my bill will go down in October?

Not on its own. VAT on domestic electricity in England, Scotland and Wales drops from 5% to 0% from 1 October 2026, which the government says takes around £45 off the annual price cap. First, it applies to electricity only, not gas, and gas is what heats most homes. Second, it is temporary: the zero rate runs to 31 March 2027, so a full winter, but roughly half a year. Cornwall Insight's assessment is that the forecast October rise outweighs the VAT saving.

Should I submit a meter reading before the price cap changes?

Yes, if you have a traditional meter rather than a smart meter sending automatic readings. Submit one dated as close to 30 September 2026 as you can manage. Without a reading, your supplier estimates how your usage split across the two price periods, and some September usage can end up priced at October rates. It takes two minutes on your supplier's app or website. Photograph the meter face with the date visible so you have your own record if the bill later needs challenging.

I am already behind on my energy bills — what should I do this week?

Contact your supplier before the new rates take effect, not after a red reminder letter arrives. Ofgem reported customers owed suppliers a record £4.7bn by the end of last winter, and Energy UK says suppliers run hardship funds, debt write-off schemes and charity partnerships — ask specifically what yours offers rather than waiting to be told. You have a right to a payment plan based on what you can realistically afford, worked out from your actual income and essential outgoings, not a figure your supplier picks. If you are on a prepayment meter, flag this now: self-disconnecting to avoid a bill makes the arrears worse, not better. Then get free, independent help alongside it: MoneyHelper, StepChange and National Debtline all give free debt advice and can deal with the supplier for you if that call feels too much.

How much is the Warm Home Discount this winter and how do I get it?

It is a one-off £150 discount off your electricity bill, and GOV.UK says the scheme reopens in October 2026. For most eligible households in England and Wales it is applied automatically by matching benefit records against energy supplier records. If the name on the electricity account does not match the name on the benefit claim, nothing happens and nobody rings you. Energy UK says the discount reaches six million customers while another 2.5 million households need help because a medical condition or a draughty home pushes their usage up. Check your account details now.

Related guides

Cut your household bills

Which household bills to cut first.

Inflation is 2.9%, but gas prices rose 14.7% in July

How the headline rate differs from your own costs.

The survival budget

What your money has to cover when money is tight.

Money worries — help today

Free, independent help from MoneyHelper, StepChange and National Debtline.

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