TL;DR: Ofgem publishes the third energy price cap of 2026 by 27 May, with the new cap taking effect on 1 July. The announcement covers the standard variable tariff that around 22 million UK households pay if they have not switched. With Middle East energy market tensions feeding into wholesale gas prices, households should consider fixed tariffs before the new cap and check eligibility for the Warm Home Discount and other support schemes.
Last reviewed: 12 May 2026
Ofgem, the UK energy regulator, will announce the third energy price cap of 2026 by 27 May. The new cap takes effect on 1 July and runs until 30 September. The cap sets the maximum that suppliers can charge households on default tariffs for each unit of gas and electricity, plus the maximum daily standing charge.
The price cap covers around 22 million UK households who are on default standard variable tariffs because they have not actively chosen a fixed-rate deal. For those households, the 27 May announcement directly sets their July to September energy bills.
How the price cap works
Ofgem reviews and resets the cap quarterly. Each review reflects wholesale gas and electricity costs over a reference period, plus network costs, operating costs, policy costs and a small allowance for supplier profit. The cap is expressed as a per-unit rate (pence per kWh) for both gas and electricity, plus a daily standing charge, varying by region.
The widely quoted headline figure (the typical annual dual-fuel direct debit bill) is calculated by applying the unit rates to a household using 11,500 kWh of gas and 2,700 kWh of electricity annually. Actual bills depend on individual usage. Higher consumption households see proportionally larger swings with each cap change.
What is driving the July 2026 cap
The 1 April 2026 cap was set against a backdrop of relatively stable wholesale prices. Since then, Middle East tensions referenced in the Bank of England's April Monetary Policy Report have lifted oil and gas futures. Motor fuel prices rose 4.9 percent in the year to March, the highest since January 2023, and similar dynamics apply to gas markets where global LNG flows and pipeline supply respond to geopolitical risk.
That is the upside pressure. On the downside, the 1 July cap reflects a different wholesale reference period than the April cap, and that period includes mild spring demand. The net direction of the July cap depends on which factor dominates. Ofgem publishes the underlying methodology and reference period definition on its website at ofgem.gov.uk.
What households can do before the announcement
Three actions are worth taking before 27 May.
First, check whether you are on a default standard variable tariff or a fixed deal. Your most recent bill will state which. Households on a fixed deal that ends before 1 July will roll onto the default tariff at the new cap level unless they actively choose another fix.
Second, compare fixed-rate tariffs currently available. Suppliers price fixed deals based on their forward view of wholesale costs over the term. If wholesale prices are expected to rise, fixed deals will be priced higher than the current cap. If they are expected to fall, fixed deals can come in below the cap. Comparison sites including the Citizens Advice Energy Price Comparison Tool show the current options.
Third, check eligibility for support schemes. The Warm Home Discount provides a 150 pound credit toward winter energy bills for eligible low-income households and is administered through energy suppliers. The Cold Weather Payment, Winter Fuel Payment and the Household Support Fund offer additional support depending on circumstances. Eligibility criteria are published on gov.uk.
What to watch in the announcement
Three numbers matter in the 27 May release. First, the headline typical bill figure compared to the 1 April cap of (Ofgem's published figure for Q2 2026). Second, the split between gas and electricity unit rates, since households with electric heating or those off the gas grid are disproportionately affected by electricity unit rate changes. Third, the standing charge, which is the fixed daily fee regardless of consumption. Standing charges have been a source of consumer frustration through 2025 and into 2026, and Ofgem opened a consultation on reform.
For households watching the announcement, the practical question is whether to lock in a fixed deal before the new cap takes effect on 1 July. If the cap is going up and fixed deals are still priced below the new cap, the fix is worth considering. If the cap is going down or fixed deals are priced above the new cap, the default tariff may be the cheaper option in the short term.
The longer term picture
The UK government's energy strategy continues to push toward greater domestic generation and the build-out of grid infrastructure to support electrification of heat and transport. The 2030 target for clean power, combined with the rollout of heat pumps and EV charging, means the long-run direction of household energy costs depends on capital investment in generation and grid capacity, not just wholesale gas prices.
For households making decisions today, the immediate question is the July to September cap. The longer-term question is whether to invest in insulation, smart meters, time-of-use tariffs, and heat pump or EV-aware tariffs that will shape bills well beyond any single cap period.
Frequently Asked Questions
When does Ofgem announce the July 2026 price cap?
Ofgem will publish the new cap by 27 May 2026. The new cap takes effect on 1 July and runs until 30 September.
How many households are on the price cap?
Around 22 million UK households on standard variable tariffs are affected by the cap. Households on fixed-rate deals are not affected until their fix expires.
What is the difference between a fixed tariff and the price cap?
The cap sets the maximum unit rate and standing charge for default tariffs. Fixed tariffs are priced separately by suppliers and lock in unit rates and standing charges for a set term, typically 12 to 24 months. Fixed tariffs may be above or below the prevailing cap.
Can I switch energy supplier before 1 July?
Yes. Switching is available throughout the year. Most fixed-rate tariffs are quotable on supplier websites and via comparison tools regulated by Ofgem.
What support is available for low-income households?
The Warm Home Discount provides 150 pounds toward winter energy bills for eligible households. Cold Weather Payment, Winter Fuel Payment, and the Household Support Fund offer additional support. Eligibility is published on gov.uk.
Sources
- Ofgem price cap pages: ofgem.gov.uk
- Bank of England Monetary Policy Report April 2026: bankofengland.co.uk
- Warm Home Discount scheme: gov.uk/the-warm-home-discount-scheme
- Citizens Advice energy guidance: citizensadvice.org.uk
- ONS motor fuels and energy data: ons.gov.uk
