What Is the Energy Price Cap & How Does It Affect My Bills? (2026)

What Is the Energy Price Cap?

The energy price cap is the maximum amount your energy supplier can charge per unit of gas and electricity on a standard variable tariff. It’s set by Ofgem — the UK’s energy regulator — and it changes every quarter to reflect wholesale energy costs. If you’re on a default tariff and haven’t actively switched, the price cap directly determines how much you pay per kilowatt hour.

Here’s the part that catches most people out: the price cap is not a cap on your total bill. It caps the unit rate (what you pay per kWh of gas and electricity) and the daily standing charge (the fixed daily fee for being connected to the grid). Your actual bill depends on how much energy you use. A larger household that uses more energy will pay more than the headline figure, even though both are paying the same capped rate.

The headline figure you see in the news — currently £1,568 per year — is based on Ofgem’s definition of “typical domestic consumption.” That means a household using around 11,500 kWh of gas and 2,700 kWh of electricity per year on a dual-fuel deal paid by direct debit. If you use more than that, your bill will be higher. If you use less, it’ll be lower.

The price cap was introduced in January 2019 to protect consumers from being overcharged on default tariffs. Before it existed, suppliers could — and did — charge loyal customers significantly more than those who regularly switched. The cap forced suppliers to keep standard tariff prices within a regulated ceiling, narrowing the gap between the best deals and the worst.

For roughly 22 million UK households on standard variable or default tariffs, the price cap is the single most important number in their energy costs. If you’re one of them, understanding how it works — and how to beat it — can save you hundreds of pounds a year.

How the Price Cap Is Calculated

Ofgem doesn’t pick a number out of thin air. The price cap is built from a formula that accounts for the actual costs energy suppliers face when delivering gas and electricity to your home. Here’s what goes into the calculation:

• Wholesale energy costs — This is the biggest component, typically making up around 40–50% of the total. It reflects what suppliers pay to buy gas and electricity on the wholesale market. Ofgem looks at forward contracts (prices agreed months in advance) over an observation window before each cap period.
• Network costs — These cover the cost of maintaining and upgrading the physical infrastructure — the pipes and wires that deliver energy to your home. These are set by regional network operators and approved by Ofgem.
• Policy costs — Government environmental and social schemes, such as the Warm Home Discount and ECO (Energy Company Obligation), are funded partly through energy bills. These costs are passed on to consumers.
• Operating costs — The day-to-day running costs of an energy supplier, including billing, customer service, metering, and administration.
• Supplier margin — Ofgem allows a pre-tax profit margin, currently set at 2.4%. This is designed to keep the market viable without letting suppliers overcharge.
• VAT — Domestic energy is charged at 5% VAT, which is included in the headline cap figure.

Every quarter, Ofgem feeds updated figures into this formula, with the wholesale cost observation window being the most volatile input. This is why the cap can swing dramatically between periods — it’s largely tracking what’s happening in global gas and electricity markets.

The shift from six-monthly to quarterly updates in January 2024 was designed to make the cap more responsive. In theory, this means consumers benefit more quickly when wholesale prices fall — but it also means the cap can rise faster when prices spike.

What the Price Cap Covers (and What It Doesn’t)

Understanding what the price cap actually covers is crucial, because plenty of people assume it protects them more than it does.

What the price cap covers

• Unit rates — The price per kWh for both gas and electricity on standard variable tariffs
• Standing charges — The daily fixed fee for being connected to the gas and electricity networks
• Direct debit, prepayment, and standard credit tariffs — The cap sets separate levels for each payment type, though since July 2023 prepayment customers are no longer charged more than direct debit customers

What the price cap does not cover

• Fixed tariffs — If you’ve locked into a fixed deal, the cap doesn’t apply. Your rate is whatever your contract says, which can be above or below the cap
• Your total bill — The cap limits rates, not usage. If you heat a large house or run energy-intensive appliances, your bill will exceed the headline figure
• Non-domestic supplies — Businesses are not covered by the residential price cap (separate mechanisms exist for business energy)
• Green or specialist tariffs — Some niche tariffs fall outside the cap, though most suppliers now include them

This is why the price cap isn’t the end of the story. If you want to actually pay less than the cap, you need to look at fixed deals, reduce your usage, or combine your utilities to unlock multi-service savings. Our savings calculator can show you exactly where you stand compared to the cap.

Price Cap History: Quarterly Changes

The table below shows how the energy price cap has moved since early 2024. You can see the sharp decline from the crisis highs of 2022–2023 as wholesale costs have gradually normalised, though bills remain higher than pre-crisis levels.

Source: Ofgem. Figures based on typical dual-fuel household paying by direct debit. Q3 2026 is the current cap period.

The overall trend since the crisis peak of £4,279 in Q1 2023 (under the Energy Price Guarantee) has been downward, but the path hasn’t been smooth. There were bumps in Q4 2024 and Q2 2025 when wholesale gas prices ticked up temporarily. The key takeaway is that while bills are lower than they were, they’re still significantly higher than the pre-crisis average of around £1,100–1,200.

Can You Beat the Price Cap?

Yes, you can. And in 2026, it’s arguably easier than it has been in years. The price cap is a ceiling, not a fixed price. Suppliers are free to offer tariffs below the cap — and many of them do, particularly through fixed-rate deals designed to attract new customers.

Here are the main ways to pay less than the cap:

1. Switch to a fixed deal below the cap

As of mid-2026, several suppliers are offering 12-month fixed tariffs priced 5–10% below the current cap level. A fixed deal at £1,410–1,490 per year for typical usage would save you £78–158 annually compared to staying on the standard variable tariff. If you’re not sure whether switching makes sense for you, read our guide on how to switch energy provider.

2. Bundle your utilities

Some providers offer savings when you combine gas, electricity, broadband, and mobile into a single package. This approach won’t show up in a simple energy price comparison, but it can deliver bigger overall savings than switching energy alone. Multi-service bundles can reduce your total household bills by £40–70 per month when you factor in every utility.

3. Reduce your usage

Because the price cap is based on unit rates, using less energy means paying less — full stop. Simple changes like dropping your thermostat by 1°C (saving around £80–100 per year), switching to LED bulbs, and using your washing machine at 30°C can meaningfully reduce your consumption without sacrificing comfort.

4. Get a smart meter

Smart meters won’t directly lower your rates, but they give you real-time visibility into what you’re spending. Research from the Energy Savings Trust suggests that smart meter users tend to reduce their consumption by 3–5% simply because they can see what’s costing them money.

The bottom line is that the price cap should be your worst-case scenario, not your target. If you’re still on a standard variable tariff, you’re almost certainly paying more than you need to. Wondering whether it’s worth the hassle of switching your gas supply specifically? Our breakdown of whether it’s worth switching gas supplier covers the details.

What Happens When the Price Cap Changes

Every quarter, Ofgem announces the new price cap level roughly six weeks before it takes effect. Here’s what that means in practice:

If the cap goes down

Your supplier must reduce the unit rates on your standard variable tariff to match the new, lower cap. This happens automatically — you don’t need to do anything. Your direct debit may also be adjusted, though some suppliers are slow to do this. If your account builds up a significant credit balance, contact your supplier to request a refund or a reduction in your monthly payment.

If the cap goes up

Your supplier is allowed to increase your unit rates up to the new cap level. Most suppliers will raise rates to the maximum permitted. Your direct debit will likely increase, and your supplier is required to notify you in advance. This is typically when it makes most sense to look at fixed deals, as locking in before a rise can protect you from higher rates for 12 months or more.

If you’re on a fixed tariff

Nothing changes. Your fixed rate stays the same regardless of what happens to the cap. This is one of the main advantages of fixed deals — they provide certainty. But it also means you won’t benefit from cap decreases until your fixed deal ends and you either switch to a new deal or roll onto a standard variable tariff.

The quarterly cycle means there are four adjustment points per year: January, April, July, and October. Savvy bill-payers keep an eye on the announcements and use them as a prompt to review their energy deal. Even if you don’t switch every quarter, checking your position twice a year can save you hundreds.

Frequently Asked Questions