Ofgem Energy Price Cap Explained: What It Is and How It Works (UK 2026)

The Ofgem energy price cap is one of the most discussed figures in UK personal finance. It goes up, bills go up. It comes down, bills come down. But most people don't know exactly what it limits or how it's calculated. That makes it harder to understand what it means for your household finances.

This guide covers the Ofgem energy price cap plainly: what it actually limits and how it's worked out. It covers what October 2026's cap means in real terms. It also covers what the quarterly review cycle means for your bills going forward.

What Is the Ofgem Energy Price Cap?

The Ofgem energy price cap is a limit set by Ofgem. Ofgem is the Office of Gas and Electricity Markets, the UK's energy regulator. It limits the unit rates and standing charges that energy suppliers can charge households on standard variable tariffs.

It does not cap the total amount you pay. That's the part most people get wrong.

If you use more energy, you pay more. The cap simply limits how much your supplier can charge per kilowatt-hour (kWh) of gas or electricity. It also limits how much they can charge per day for your standing charge. Use twice as much gas as the typical household and your bill will be roughly twice the cap-assumed annual figure.

The Ofgem energy price cap applies to the default tariff, which is the standard variable tariff (SVT). Most customers are on this tariff if they haven't actively switched to a fixed deal. If you're on a fixed tariff, the cap doesn't directly apply to your rate during your fixed period. However, suppliers still set their fixed rates with reference to where they expect the cap to move.

How Does the Ofgem Energy Price Cap Work?

Ofgem sets the cap based on what it costs suppliers to buy and deliver energy to your home. The main components it covers are:

Wholesale energy costs. The biggest single element. This is what suppliers pay for gas and electricity on international markets. Wholesale prices fluctuate with global supply and demand, geopolitical events, and weather patterns.

Network costs. The cost of maintaining the gas pipes and electricity lines that bring energy to your home. Includes transmission (the national grid) and distribution (your local networks).

Operating costs. What it costs suppliers to run their customer-facing operations, billing, and metering.

VAT. Added at 5% (the reduced rate that applies to domestic energy).

Supplier profit margin. Ofgem builds in a modest allowed margin.

The energy price cap is expressed as a set of unit rates and standing charges. Ofgem then translates these into an "assumed" annual figure for a typical household. It is currently based on 2,700 kWh of electricity and 11,500 kWh of gas per year.

Energy Price Cap October 2026: Current Figures

From 1 October 2026, the Ofgem energy price cap pushed the typical dual-fuel household bill to £1,723 a year. That's a 4% increase from the July 2026 level.

The October 2026 figures break down as follows (typical values, which may vary slightly by region):

• Electricity: approximately 24.5p per kWh unit rate, 61p per day standing charge

• Gas: approximately 6.24p per kWh unit rate, 31p per day standing charge

These are the maximum rates suppliers on standard variable tariffs can charge. In practice, most major suppliers charge at or very close to the cap.

The 4% October rise was driven primarily by wholesale gas prices, which have been elevated through 2026 partly as a result of ongoing supply constraints from the Middle East and a colder-than-expected northern European summer that left storage levels lower than seasonal norms.

Review our guide on How to reduce energy bills UK this winter 2026

Energy Price Cap Quarterly Review: When Does It Change?

Ofgem reviews the energy price cap every three months, using a forward-looking formula based on wholesale market prices over a reference period. The review dates for 2026 to 2027 are:

• October 2026: £1,723/year (current)

• January 2027: Next review, announced in late November 2026

• April 2027: Following review

The January 2027 cap is the one that matters most right now. Several energy consultancies, including Cornwall Insight, and financial sites like Money to the Masses are forecasting a rise of around 14%, which would push the typical annual bill above £1,960.

This is a forecast, not a confirmed figure. Wholesale prices could shift between now and the reference period Ofgem uses for the January calculation. But with current market prices where they are, a material rise looks more likely than not.

Energy Price Cap Unit Rates: Why Your Bill Might Differ

Even when you know the Ofgem price cap unit rates, your actual bill depends on several things the cap doesn't control.

Your actual usage. The £1,723 annual figure is based on the average UK household. If you live in a larger property, have more occupants, or have electric heating, your usage will be higher and your bill will be proportionally more.

Regional variation. Ofgem actually sets slightly different caps for different distribution network areas across the UK. The differences are relatively small (usually within a few percent) but they do exist.

Your standing charge. The daily standing charge applies regardless of how much energy you use. For low-usage households (a single person in a well-insulated flat, for example), the standing charge can make up a significant proportion of the total annual bill.

Meter type. Economy 7 and other multi-rate meters have their own capped rates, which differ from single-rate meter rates. If you're on Economy 7, check your specific rate against the relevant cap figure rather than the headline number.

What the Energy Price Cap Means for Your Tariff Decision

Understanding the Ofgem energy price cap is useful because it shapes the most important energy decision you currently face: whether to stay on your SVT or switch to a fixed deal.

If you're on an SVT, your rate is directly tied to the cap. A January rise of 14% means your bills go up 14% automatically, with no action or warning needed from your supplier.

If you switch to a fixed deal priced at, say, 8% above the current cap, your rate is locked. When the cap rises in January, your fix stays where it is. The fix becomes the cheaper option from the point the cap overtakes it.

That's the maths behind the current surge in fixed-deal interest. Suppliers are seeing significantly higher uptake on fixes in October 2026 than at any point since 2021.

Review our Guide on Fixed vs variable energy tariff UK 2026 which one should you choose

Energy Price Cap History UK: How We Got Here

A brief history helps put October 2026 in context.

The Ofgem energy price cap was introduced in January 2019 to protect default tariff customers from being overcharged. For its first two years, it sat at around £1,000 to £1,100 a year for a typical household.

The 2021 to 2022 energy crisis changed everything. The global surge in gas prices following the post-pandemic demand spike and then the Russia-Ukraine conflict pushed wholesale costs to levels no one had modelled. The cap reached £4,279 at its October 2022 peak, before government intervention through the Energy Price Guarantee effectively capped household bills at £2,500 for a period.

Through 2023 and into 2024, wholesale prices fell back and the cap came down with them, settling around £1,568 in early 2025. The rises since then have been more modest, tied to specific supply pressures rather than the broad market collapse of 2021 to 2022.

At £1,723 today, the energy price cap is significantly lower than its peak but still around 60% higher than its pre-crisis level. For a typical household, that's a permanent shift in what energy costs, not a temporary spike.

A Plain-English Summary

The Ofgem energy price cap limits what your supplier can charge per unit of gas and electricity. It doesn't limit your total bill. From October 2026, the typical household bill sits at £1,723 a year. The cap gets reviewed every three months, with the next review coming in January 2027. Based on current wholesale prices, analysts expect a further rise at that review.

If you're on a standard variable tariff, your rate moves with the Ofgem energy price. If you're on a fixed deal, your rate is locked until the deal ends. Understanding this distinction is the starting point for every practical decision about your energy costs this winter.

This article is for informational purposes only and does not constitute financial advice. Energy price cap figures are based on Ofgem's October 2026 announcement. Check Ofgem.gov.uk for the latest figures.