Ofgem price cap explained

The energy price cap is one of the most talked-about numbers in UK energy, and one of the most misunderstood. It does not cap your bill. It does not guarantee you a specific annual cost. What it does is set a maximum rate that suppliers can charge per unit of energy and per day of standing charge on their default tariff.

The current cap period runs from 1 July to 30 September 2026. Ofgem’s Direct Debit headline cap is £1,862 per year for a typical dual-fuel household on the old benchmark, and the generated rate data on this site labels the current cap as £1,863. Ofgem’s GB average direct-debit rates for this period are 26.11p/kWh for electricity and 7.33p/kWh for gas, with standing charges of 57.19p/day for electricity and 29.04p/day for gas. Those are average cap figures, not a personal quote, and they vary by region, payment method and meter type.

For comparison, the April to June 2026 Direct Debit headline cap was £1,641 per year on the same typical-use basis, with GB average direct-debit rates of 24.67p/kWh for electricity and 5.74p/kWh for gas. Use those older figures only as context for the July rise, not as current prices.

What the price cap actually is

Ofgem, the energy regulator, sets maximum unit rates for electricity and gas, and maximum daily standing charges. These apply to the standard variable tariff (also called the default or “out of contract” tariff) that customers end up on if they don’t actively choose something else.

The cap is reviewed and updated every quarter: January, April, July and October. Ofgem calculates it from wholesale energy costs, network charges, policy costs, operating costs, debt allowances, VAT and other regulated inputs. A fall in the headline cap does not always mean wholesale prices have fallen by the same amount. In the April to June 2026 cap, Ofgem’s published breakdown shows government policy costs falling sharply while network costs rose.

The “typical household” figure

Every time the cap is updated, the news reports a headline figure like “energy price cap set at £1,863 per year”. This number assumes a “typical” dual-fuel household and monthly Direct Debit. The generated figures on this site currently use 2,700 kWh of electricity and 11,500 kWh of gas a year.

Ofgem updated the typical domestic consumption values from 1 July 2026 because average household use has fallen. Cornwall Insight’s 6 July forecast shows why that matters: the same October forecast looks lower on the new lower typical-use benchmark than it does on the older benchmark, even if the underlying unit rates and standing charges have not moved in the same way.

If you use more than the benchmark, your bill will be higher than the headline figure. If you use less, it will be lower. The cap limits the rate per kWh and per day, not the total you can be charged. A household that uses 20,000 kWh of gas will pay substantially more than one that uses 8,000, even though both are on the capped tariff.

This is the biggest misconception. When people say “my bill is higher than the price cap”, they usually mean their bill is higher than the headline figure. That doesn’t mean their supplier is overcharging. It means the bill is being compared with an average-use example rather than the home’s actual kWh use, region and payment method.

How Octopus relates to the cap

Octopus’s Flexible tariff is its standard variable tariff. Its rates are normally set close to the Ofgem cap and move when the cap changes. It is the fairest Octopus tariff to compare with the headline cap because both are default-tariff style prices.

The smart tariffs work differently:

Agile is not priced from the cap. Rates move with the wholesale market every half hour. Some slots can be above a cap-style unit rate, while others can be much lower. Agile also has its own 100p/kWh maximum import rate for extreme spikes. It can suit households that can shift or automate usage, but it is not a simple cap discount.

Tracker follows a daily wholesale-linked formula plus a fixed margin. Some days may be above a cap-style unit rate and some may be below. It is best judged over your own usage pattern rather than by one good or bad day.

Go and Intelligent Go use a cheap overnight or smart-charging rate alongside a higher day rate. They can work well for EV households that move a meaningful share of use into the cheap window. They can disappoint if most electricity use stays in the day.

Cosy has three rate tiers, with cheaper periods designed around heat-pump use. The question is not whether Cosy is always below the cap; it is whether your heat pump, hot water schedule and home comfort needs can avoid enough of the evening peak.

Flux is a solar and battery import/export route. Standard Flux is the manual solar-and-battery tariff to check against the live Octopus export pages, while Intelligent Octopus Flux is the separate automated battery route with extra eligibility and availability checks. Neither should be judged from the headline price cap alone.

Historical context

The price cap was introduced for default tariffs in 2019, after a separate prepayment cap had already existed. For the first few years it was relatively stable, moving up and down gently in response to moderate wholesale price changes.

Then came the 2022 energy crisis. Global gas prices rose sharply after Russia’s invasion of Ukraine and after post-pandemic demand returned. Ofgem’s calculated cap rose far beyond normal household expectations, then the government’s Energy Price Guarantee limited what households actually paid for a period.

Since that peak, prices have come down but they have not returned to pre-crisis levels. Through 2024, the cap fell from £1,928 in Q1 to £1,568 by Q3, before rising to £1,717 in Q4. In 2025, it moved between £1,738 in Q1, £1,849 in Q2, £1,720 in Q3 and £1,755 in Q4. The April to June 2026 cap was £1,641, then the July to September 2026 cap rose to £1,862 on the old typical-use benchmark. Ofgem’s April breakdown showed lower policy costs, while the July rise was mainly a current-period default-tariff reset rather than a fixed-tariff or smart-tariff price promise.

Why the cap matters for tariff choice

The cap gives you a useful benchmark. For a breakdown of how each Octopus tariff works, see our understanding tariffs guide. If a smart tariff saves you 15% compared with Flexible, the cap helps you translate that into a rough pounds-and-pence comparison.

Think of the cap as the “do nothing” baseline. It is close to what you would pay on a standard variable tariff if you made no active tariff choice. A smart tariff is not automatically better; it is a fit question about your home, meter, car, heating, battery and willingness to shift usage.

Quarterly changes and what to watch

The cap changes every three months, which means standard variable prices are not fixed. Cap levels also vary by electricity region, payment method and meter type. Each quarter, check the new cap figures and compare them with your current tariff. If you are on a fixed deal, look at the actual unit rates, standing charges, exit fees and remaining term rather than only the headline annual cap.

From 1 July to 30 September 2026, Ofgem’s confirmed Direct Debit headline cap is £1,862 for a typical dual-fuel household, 13% higher than the April to June period. The GB average direct-debit rates are 26.11p/kWh for electricity, 57.19p/day electricity standing charge, 7.33p/kWh for gas and 29.04p/day gas standing charge. Ofgem says the next cap level, for 1 October to 31 December 2026, is due by 26 August 2026.

Ofgem’s unit-rate page still carries the confirmed 1 July to 30 September 2026 cap and says the next level, for 1 October to 31 December 2026, will be announced by 26 August 2026. Ofgem’s separate typical domestic consumption values decision says the benchmark changed from 1 July 2026, and Cornwall Insight’s 6 July forecast publishes October estimates on both the old and new typical-use bases.

That makes the comparison risk sharper than usual. A lower October headline figure on the new benchmark would not automatically mean a cheaper unit rate for your home. Compare the unit rates, standing charges, region, payment method and your own annual kWh use before deciding whether Flexible, a fixed tariff or a smart tariff fits.

Octopus’s current price-cap prediction page still frames the same decision as Flexible versus Fixed versus smart tariffs, with later forecasts carrying lower confidence than the confirmed July cap. That is the safest reader action here: use the cap to understand the default-tariff direction, then compare your own unit rates, standing charges, payment method and region.

If you are choosing between Flexible, a fix or a smart tariff, the question is not only whether the July headline cap rises. It is whether your actual home can beat Flexible after the day rate, standing charge, smart-meter requirements and usage pattern are included. A lower-standing-charge pilot may matter for low-usage homes, but it is not the default cap and can be offset by a higher unit rate.

The next cap period is 1 October to 31 December 2026. Treat October forecasts as useful background until Ofgem publishes the confirmed level and regional tables.