Cheap energy deals UK: fix vs price cap (July 2026)
Where a link is marked *, it is a partner link — we receive commission at no extra cost to you. Links without a * earn us nothing. How we make money.
Quick answer: From 1 July 2026 the Ofgem price cap rises about 13% for typical dual-fuel homes. Many one-year fixed tariffs undercut the cap by 10–17% — compare on an Ofgem-accredited site, check exit fees on existing fixes, and use our energy tariff comparator before you switch.
Energy is the bill most UK households can cut fastest by switching. The price cap sets a ceiling on standard variable tariffs, not a target — suppliers compete below it on fixed deals. After the July 2026 cap rise, staying on a default tariff without comparing is usually the expensive option.
Fix or stay on the price cap?
Choose a fix when the quoted annual cost is clearly below what you would pay on the cap at your usage, and you want price certainty for 12 months. Stay on a variable tariff if fixes are above the cap or you expect rates to fall sharply — though predicting wholesale markets is unreliable.
Use your annual kWh from a recent bill (or estimate with our energy tariff comparator) and compare unit rates plus standing charges, not headline 'typical household' figures alone.
How to compare safely
Use an Ofgem Confidence Code comparison site or contact suppliers directly. Enter accurate usage — over-estimating pushes you towards expensive unlimited-style tariffs.
Check customer service ratings and complaint data on Ofgem's supplier performance reports. The cheapest tariff is not always best if billing errors take months to fix.
If you are struggling to pay
Contact your supplier before you fall behind — they must offer affordable payment plans. Ask about the Priority Services Register, Warm Home Discount eligibility, and whether you qualify for a social tariff on broadband or mobile to free up budget.
Common questions
Should I fix before the July 2026 cap rise?
If you are on a standard variable tariff, comparing fixes before 1 July 2026 usually makes sense when a fix undercuts the new cap. If you are already on a cheap fix, check exit fees before moving.
Can I switch with a smart meter or prepayment?
Yes. Smart meters usually stay in place; the new supplier may need to take over the meter configuration. Prepayment switches are possible but fewer tariffs are available — compare specifically for prepay.