The energy price cap will rise by £63 a year for a typical household from 1 October, the third increase in 2024. That brings the annual dual-fuel bill on a standard variable tariff to roughly £1,717. Yet fixed-rate deals available today undercut that figure by as much as £150. The logic is simple: lock in now or pay more this winter.
As This is Money reported last week, the cheapest fixed deals are now around 5–10% below the October cap. That gap is wide enough to matter, especially for households that weathered the 2022–23 crisis on a standard variable tariff and have not switched since.
Who qualifies, and who doesn’t
Fixed deals are not for everyone. If you are on a cheap fix that runs until spring 2025, breaking it early could cost £50–£75 in exit fees per fuel. The maths flips: you might save £150 on the new cap but lose £100 in penalties, leaving a net gain of only £50. Better to wait until your current deal ends and then fix again.
Households on the default price cap, about 11 million, according to Ofgem, have no exit fees to worry about. For them, switching to a 12-month fix now is a straight hedge against further rises. The catch: wholesale gas prices remain volatile, and the cap could fall again in January if storage levels improve. That risk is real but modest. Analysts at Cornwall Insight expect the cap to stay near current levels through spring 2025, not drop sharply.
What it costs a typical 3-bed semi
A typical semi-detached home using 12,000 kWh of gas and 2,900 kWh of electricity per year currently pays about £1,654 on the cap. Switching to the best fix available today, around £1,515, saves roughly £139 a year. That is £11.58 a month, or the cost of two takeaway coffees. Over the 12-month fix, the saving covers the annual boiler service and leaves change.
The Energy Saving Trust advises that households with electric heating or older appliances should check their actual usage before switching, because fixed deals often assume average consumption. If you use 50% more electricity, the saving percentage stays the same but the absolute pounds change. Use your annual statement, not a guesstimate.
How to switch, and what to watch for
Switching is straightforward but requires two checks. First, confirm your current tariff end date on your latest bill or online account. Second, compare deals on a Ofgem-accredited site such as Citizens Advice or MoneySavingExpert. Look for fixed tariffs with no exit fees, some now offer them as standard. Avoid longer fixes (18 or 24 months) unless you are certain you will not move house, because early exit fees apply.
Ofgem’s price cap is a safety net, not a bargain. It protects households who do not engage with the market. But the market now offers a genuine discount for those who do. The October rise is a nudge, not a crisis. The action window is open now and closes when the next Ofgem announcement on 22 November could shift wholesale prices again. Switch before the clocks go back, and you will be set for winter.
Frequently Asked Questions
A typical UK household on the price cap paying £1,654 a year can save around £139 by switching to the cheapest fixed deal at £1,515. That's about £11.58 a month, enough to cover an annual boiler service. Savings vary based on your actual energy usage, so check your annual statement before switching.
If your current fixed deal runs until spring 2025, breaking it early could cost £50-£75 in exit fees per fuel. You might save £150 on the new cap but lose £100 in penalties, leaving a net gain of only £50. It's better to wait until your current deal ends and then fix again.
The best time to switch is now before the clocks go back, as the October price cap rise of £63 takes effect. Fixed deals are currently 5-10% below the cap, and the next Ofgem announcement on 22 November could shift wholesale prices again. Locking in a 12-month fix now protects you from further winter increases.
First, confirm your current tariff end date on your latest bill or online account to avoid early exit fees. Second, compare deals on an Ofgem-accredited site like Citizens Advice or MoneySavingExpert. Households with electric heating or older appliances should use their actual annual usage, not a guesstimate, because fixed deals assume average consumption.
Yes, some fixed tariffs now offer no exit fees as standard, making them safer to switch from. Avoid longer fixes of 18 or 24 months unless you're certain you won't move house, because early exit fees apply. Always check the terms on an Ofgem-accredited comparison site before committing.
