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The energy price cap is one of the most quoted and most misunderstood numbers in British household finance. The headline figure, currently £1,723 a year for a typical dual fuel household paying by Direct Debit from 1 October 2026, is not a maximum bill. It is a worked example: what a home using an assumed amount of gas and electricity, paying a regional average set of rates, would pay over a year. The cap itself limits only two things, the price of each unit of energy and the daily standing charge, and it says nothing about how much energy a household actually uses1.
That distinction matters. A household that uses more than the assumed amount pays more than the headline figure, and a household that uses less pays less. Ofgem states this plainly: "It does not limit the cost of your total bill. The more energy you use, the higher your bill will be."1 This page explains what the cap actually caps, how the typical household figure is built, how the cap is set and how often it changes, who is covered and who is not, and how to work out what the cap means for one particular home.
Two numbers on the bill, not the total
The price cap, as set out in law, works by "setting a maximum that suppliers can charge per unit of energy, including a daily standing charge"6. Those are the only two levers it holds. Every unit of gas and electricity a household draws is charged at or below the capped rate, and every day on supply attracts a standing charge at or below the capped daily amount. Multiply the two together for a billing period and the result is the bill, and nothing in the cap limits that result.
Ofgem has described the design the same way since the cap was first introduced: "The price caps are a cap on a unit of gas and electricity, with standing charges taken into account. They are not a cap on customers' overall energy bills."7 The consumer information leaflet published when the cap launched made the same point in plainer terms: "This limit isn't on your total bill, which will vary depending on how many units of energy you use in a billing period."8
The practical consequence is that the cap protects the price of energy, not the cost of it. A household cannot be overcharged per unit on a default tariff, but it can still face a bill far above the headline figure if it uses a lot of energy, and it still pays the standing charge in full regardless of how little it uses. Home Energy Scotland puts the limitation in four words: "it doesn't limit your total bill"9. The standing charge in particular is a fixed cost of being connected, and it is covered in detail on standing charges.
The 'typical household' figure is an illustrative example

When Ofgem announces a cap level, it publishes it as an annual bill for a "typical household". That figure is arithmetic, not regulation. Ofgem takes the capped unit rates and standing charges for each region and payment method, applies an assumed annual amount of gas and electricity, and reports the result. For the October to December 2025 quarter, that calculation produced £1,755 a year for a typical household using electricity and gas and paying by Direct Debit across England, Scotland and Wales10.
The same announcement showed how the figure behaves when the underlying rates move. Ofgem described the change as one a household would feel in small monthly steps: "a typical household on a default tariff will pay £102 for what currently costs £100 per month"11. A rise of two per cent in the rates becomes about £2 a month at typical usage, not a lump sum. The £1,755 figure for that quarter was itself an increase of £2.93 a month, or £35.14 a year, for a typical household10.
None of this is a promise about any real home. A household with above-average usage pays more than the headline; a household with below-average usage pays less; a household on a different payment method, such as prepayment or standard credit, has a different set of capped rates and a different headline figure. The typical household is a measuring stick for comparing one quarter with another, and for comparing a default tariff against a fixed deal, not a ceiling on what a supplier may charge an individual customer. If your own bill sits above the headline figure, the explanation is on why is my bill higher than the price cap figure?.
Typical domestic consumption values: what lies behind them
The assumed usage behind the headline figure comes from Typical Domestic Consumption Values, or TDCVs. Ofgem defines them as "industry standard values for the annual gas and electricity usage of a typical domestic consumer"12. They exist, in Ofgem's own words, "to give you an idea of how much energy you could use in a year, which can help you to understand your bill"1.
The values used in the price cap benchmark are specific. For the April to June 2024 cap period, the benchmark consumption was 12,000 kWh of gas a year, 3,100 kWh of electricity for a single-rate meter, and 4,200 kWh for a multi-register meter such as Economy 72. The same Ofgem letter confirms that all its figures reflect the latest 2023 TDCVs13. The benchmark consumption used in the price cap is currently based on TDCVs from 2017, and Ofgem notes that TDCVs are derived using an established methodology built on the Department for Energy Security and Net Zero sub-national consumption statistics, based on median consumption14.

That 2017 basis is the important caveat. Homes have changed since then: insulation, heating technology and metering have all moved, and Ofgem ran a benchmark review precisely because the assumed consumption may no longer match the median household14. Until the benchmark is updated, the headline figure describes a household as it was measured several years ago. A home with a heat pump, a well-insulated terrace or a large detached house will sit far from the benchmark in either direction. The full detail is on typical domestic consumption values.
How the cap is calculated and how often it moves
The cap is set by Ofgem under the Domestic Gas and Electricity (Tariff Cap) Act 201815, which requires licence conditions giving effect to it16. It was introduced on 1 January 201917. Originally the level was adjusted twice a year, with Ofgem moving the cap up or down to reflect the costs of supplying electricity and gas18. In summer 2022, in response to high and volatile wholesale prices, Ofgem moved to setting the cap every quarter3. The current position is that "Every 3 months we review and set a level for how much an energy supplier can charge for each unit of energy and daily standing charges"10.
The largest single input is the wholesale cost of energy. Ofgem set up the cap to calculate the wholesale index based on a 12 month forward view of gas and electricity prices3, which means each quarterly level reflects what suppliers are expected to pay for energy over the coming year, not what they paid last year. Two structural rules matter for households. First, Ofgem must set one cap level for all suppliers: there are no separate caps for different companies, so a small supplier and a large one face the same maximum rates16. Second, the cap is a ceiling, not a floor: suppliers may charge below it, and competition on default tariffs is limited by design.
The quarterly cycle also means the headline figure is a snapshot with an expiry date. Each announcement covers one three-month period, and the next announcement follows within the quarter. The full timetable of past and upcoming announcements is on price cap history and announcement dates.
Recent levels: how the headline figure has shifted

The headline figure has moved substantially since the cap was introduced, and the trajectory tells the story of wholesale markets rather than of policy. A typical customer's bill rose by 78% between the cap's introduction in 2019 and April 202219. During the energy crisis the government intervened separately with the Energy Price Guarantee, which held "a typical UK household" at an average of £2,500 a year from October 2022, with equivalent support in Northern Ireland20. The cap itself returned to being the operative limit, and recent quarterly levels for a typical dual fuel Direct Debit household are set out below.
| Cap period | Typical annual dual fuel Direct Debit figure |
|---|---|
| 1 April to 30 June 2024 | £1,92821 |
| October 2024 | £1,71722 |
| 1 January to 31 March 2025 | £1,73813 |
| 1 October to 31 December 2025 | £1,75510 |
| 1 January to 31 March 2026 | around £1,75823 |
| 1 April to 30 June 2026 | £1,64124 |
| 1 October to 31 December 2026 | £1,723 |
The April 2025 rise to £1,849 was driven by higher wholesale costs24, and Ofgem noted at the time that the level was 9.4%, or £159, higher than the same point a year earlier6. The Welsh Government's guidance for the January to March 2026 quarter put the figure at around £1,758 for a dual-fuel home with typical usage paying by Direct Debit23. From 1 October 2026 the cap rises by 4%, taking the typical annual figure from £1,663 to £1,723, and VAT on domestic electricity in Great Britain is temporarily cut from 5% to 0% over the same period. Each figure in the table is a worked example on the assumed consumption, not a maximum.
Inside the capped rate: wholesale, networks, policy costs and VAT
The capped unit rate is not a single price but a bundle of costs. Ofgem's breakdown of what goes into a bill includes wholesale costs, the cost a supplier pays to buy energy; network costs; operating, debt and industry costs; the supplier's earnings before interest and tax; policy costs; and VAT, charged at 5%25. The same breakdown also takes account of the type of energy used, the type of meter installed and how the bill is paid25.
Each component moves for its own reasons. Wholesale costs follow international gas markets, and they are covered on wholesale gas and electricity prices. Network costs pay for the wires and pipes that deliver energy, and they vary by region. Policy costs cover government schemes such as renewables support and energy efficiency obligations, and they are examined on policy costs and levies on energy bills. When Ofgem added a green gas levy allowance to the cap methodology, it estimated the pass-through at approximately £2.69 per gas customer26. Electricity balancing costs added around £1.23 a month to the average household bill at the October 2025 level11.
One technical point matters when reading Ofgem's published tables: the cap values themselves are exclusive of VAT, which is applied by suppliers to consumers' bills27. The headline figures households see, including the £1,723 current level, are inclusive of VAT at the rates that apply. The component structure is explained in full on what makes up a UK energy bill.
Who the cap applies to, and who it leaves out

The cap covers households on default tariffs, and the payment method does not affect eligibility. Ofgem's guidance is that "You are covered by the energy price cap if you are on a default tariff and pay for your electricity and gas by either: standard credit, Direct Debit, a prepayment meter or an Economy 7 (E7) meter"10. The Welsh Government's guidance confirms the cap applies to default tariffs regardless of how the bills are paid23. The scale of coverage is large: the cap has protected 23 million households on standard variable and default tariffs4.
Several groups sit outside it. A household that has "agreed a fixed tariff with your supplier" is not covered, and nor are business energy contracts or heat networks1. Around 11 million people were on fixed deals in early 2025 and were not affected by changes in the cap6. The average fixed tariff offered in May 2026 was above the price cap, reflecting supplier expectations that the cap would increase in future28, so being outside the cap is not automatically cheaper or more expensive; it depends on the deal.
Heating oil households have no cap protection at all. Heating oil prices "aren't regulated by Ofgem and aren't covered by the energy price cap"5, leaving consumers "fully exposed to sudden market increases"29. The position of prepayment customers has its own history: the 2018 Act exempts domestic customers who benefit from the separate prepayment charge restriction cap15, and the original policy design stated the cap would not apply to customers covered by the PPM cap30. Prepayment households now fall under the main cap, and the differences between payment methods are set out on price cap rates by payment method.
How rates differ by region in Great Britain
There is no single national cap level in practice. The cap level varies across Great Britain because "the costs of transporting the energy from the generation source to the customer (the 'network charges') vary by region"30. A household in North Scotland faces different network charges from one in the South of England, and the capped unit rates and standing charges are set region by region to reflect that.
The regional differences are visible in Ofgem's own published tables. For the April to June 2024 quarter, the annual gas cap at 12,000 kWh for a customer paying by a non-Direct Debit method ranged from £790.79 in Northern Scotland and £791.10 in Southern Scotland to £806.51 in the Southern region2. The same table shows the cap at nil consumption, which is effectively the annual standing charge, ranging from £106.98 in the Southern region to £110.87 in North Wales and Mersey2. Those differences are modest in cash terms but persistent, and they apply every quarter.
Two further points of geography matter. First, the cap covers England, Scotland and Wales; Northern Ireland is a separate energy market with its own arrangements, covered on energy bills in Northern Ireland. Second, the regional rates mean the headline figure a household sees in the news is an average across the three nations, so a home in a high-cost region will run slightly above it at typical usage and a home in a low-cost region slightly below. The full regional picture is on electricity and gas unit rates by region.
What the cap means for an individual home
Because the cap limits rates rather than bills, the only way to know what it means for a particular home is to apply the capped rates to that home's actual usage. The method is straightforward. Take the capped unit rate and standing charge for your region and payment method for the current quarter, multiply the unit rate by the number of units used in the billing period, add the standing charge for each day on supply, and the result is the bill. Ofgem's typical domestic consumption values exist to help with exactly this: to give a household an idea of how much energy it could use in a year and so make the bill understandable1.

Two practical cautions apply. The first is meter readings: a bill based on an estimate can differ sharply from a bill based on an actual reading, and the Energy Ombudsman notes that "Many consumer assume that a catch up bill is the result of higher than average usage, but this is rarely the case"31. A catch-up bill usually reflects billing over an earlier period rather than a sudden change in rates. The second is payment method: the capped rates differ between Direct Debit, standard credit and prepayment, so a household comparing its bill to the headline figure must compare like with like. Help with reading the bill itself is on how to read a gas and electricity bill, and with estimates on meter readings, estimated bills and reading frequency.
If a supplier appears to be charging above the capped rates, the first step is to raise it with the supplier, quoting Ofgem's published rates for the region and payment method. Suppliers are bound by the cap on default tariffs. If the complaint is not resolved, the Energy Ombudsman can investigate and its decision binds the supplier31.
What the cap will and will not achieve for energy independence

The price cap is a price protection, not an energy independence measure. It caps what a supplier may charge per unit on a default tariff, and in doing so it caps one form of dependence: the dependence of a household on its supplier's pricing power for the energy it buys. It does nothing about the other dependence, which is on the energy itself. A household on the cap is still buying every unit of gas and electricity from the market, still exposed to the quarterly movements of wholesale prices, and still paying a standing charge for the connection whether or not it uses energy. The 78% rise in typical bills between 2019 and April 202219 happened entirely under a functioning cap.
The cap also leaves whole categories of household outside its protection. Heating oil users face the market with no cap at all5, and fixed-tariff customers have traded cap protection for contractual certainty at whatever rate the market offered28. For a household thinking about energy independence, the honest reading is this: the cap smooths the price of imported energy, but it does not reduce the amount a home needs to buy. Reducing that need, through insulation, efficiency or generation, is the only route that changes the underlying exposure, and it is covered on energy bills and energy independence.
The wider picture is on energy bills and the price cap.
Sources31 sources
- Energy price cap, Ofgem, 2026
- Default tariff cap level, 1 April 2024 to 30 June 2024, Ofgem, February 2024
- Energy price cap methodology: backwardation and deadband decision, Ofgem, 21 November 2025
- Decision on the Contract for Difference allowance methodology in the default tariff cap, Ofgem, 23 June 2022
- Energy price cap research briefing CBP-9461, House of Commons Library, 2026
- Energy price cap will rise 6.4% in April, Ofgem, 25 February 2025
- Higher wholesale costs push default and pre-payment price caps up in April, Ofgem, 7 February 2019
- Energy price caps information leaflet, Ofgem, December 2018
- Best deal on energy, Home Energy Scotland, 2026
- Changes to the energy price cap between 1 October and 31 December 2025, Ofgem, 27 August 2025
- Energy price cap will rise 2 percent in October, Ofgem, 27 August 2025
- TDCV 2023 Call for Input, Ofgem, February 2023
- Summary of changes to energy price cap, 1 April to 30 June 2025, Ofgem, 25 February 2025
- Energy price cap benchmark review decision, Ofgem, 21 November 2025
- Domestic Gas and Electricity (Tariff Cap) Act 2018, legislation.gov.uk, 19 July 2018
- Energy price cap wholesale adjustment decision, Ofgem, 23 February 2024
- Energy price cap review of historical debt-related costs, Ofgem, 25 March 2026
- Energy price cap increase in April: consumers should switch and save money, Ofgem, 5 February 2021
- Committee of Public Accounts report on the energy price cap, UK Parliament, April 2022
- Government announces Energy Price Guarantee for families and businesses, GOV.UK, 2022
- Default Tariff Cap Letter, 1 April 2024, Ofgem, 23 February 2024
- Tackling fuel poverty in Scotland: periodic report 2021 to 2024, Scottish Government, 2024
- Energy price cap explained, Welsh Government, 2026
- State of the energy market report: retail, Ofgem, 2025
- How your electricity or gas bill is calculated, Ofgem, 2026
- Decision on the Green Gas Levy allowance in the default tariff cap, Ofgem, 4 February 2022
- Energy price cap levels, 1 October to 31 December 2025, Ofgem, August 2025
- Energy price cap research briefing CBP-10609, House of Commons Library, 2026
- Cost of living pressures and soaring prices expose gaps in bulk fuel checks, Trading Standards, 16 March 2026
- Default tariff cap policy consultation overview, Ofgem, 25 May 2018
- Billing explanations, hints and tips, Energy Ombudsman, 2026