What is the cheapest energy supplier in June 2026?

Based on illustrative annual costs for a typical UK home, E.ON Next Fixed July 2027 at ~£1,602/yr and Octopus 12M Fixed at ~£1,632/yr are among the lowest-priced deals available in June 2026 — both well below the July 2026 cap of £1,862/yr.

How much does the energy cap rise in July 2026?

The Ofgem price cap increases by £221/yr, from £1,641/yr (Apr-Jun 2026) to £1,862/yr (Jul-Sept 2026). Gas unit rates rise by around 24% and electricity unit rates by around 5%.

Is it worth switching energy supplier before July 2026?

Yes, if you are on a standard variable tariff. Fixed deals currently available sit below the new £1,862 cap. Locking in now can save up to £260/yr compared with staying on the standard variable tariff from July. A switch takes just 5 working days.

How long does switching energy supplier take?

Under the Ofgem Switch Guarantee, most domestic switches complete within 5 working days. You have a 14-day cooling-off period after agreeing your new deal. No engineer visit is needed.

Will I be cut off during the switch?

No. Your energy supply is continuous throughout the switching process. The change is entirely administrative and you will not experience any interruption to your gas or electricity.

Are there exit fees if I switch from my current tariff?

If you are on a standard variable tariff there are no exit fees. If you are on a fixed deal, check your contract. Most deals launched since 2023 are exit-fee-free, but some older fixed tariffs may carry charges of £30 to £60 per fuel.

Which suppliers are reputable to switch to in 2026?

Reputable suppliers include Octopus Energy, E.ON Next, EDF Energy, OVO Energy, British Gas, Utility Warehouse, Ecotricity and Good Energy. GivEnergy entered administration in April 2026 and should not be considered.

What if I am already on a fixed deal — should I switch?

Around 22 million UK accounts are already on fixed deals and will not be affected by the July 2026 cap rise. If your fixed deal ends before October 2026 and you have not renewed, compare tariffs now. If your current fixed rate is above £1,862/yr, it is worth switching immediately if there are no exit fees.

Cheapest UK Energy Supplier Switching Deals This Week (July 2026)

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Updated on 7 Jul 2026