Why the best energy tariff isn’t the one you’re on right now
Haven’t looked at your energy tariff since you last switched? There’s a decent chance it isn’t the best energy tariff for your home anymore. Ofgem’s price cap rose 4% in October 2026, taking a typical dual fuel bill to around £1,723 a year, and Cornwall Insight expects a further rise of around 9% in January. Doing nothing just got a bit more expensive, again.
The good news: finding the best energy tariff for your situation isn’t complicated once you know what’s actually on the table. This guide walks through the main tariff types, when each one makes sense, and how to compare properly before you commit.
One thing to know before you compare anything
Ofgem changed what it counts as a typical household on 1 July 2026, lowering the assumed consumption because households use less energy than they did. That means the £1,723 figure is measured on a smaller basket of energy than the cap figures you remember from previous years. Ofgem’s own comparison: October’s cap would have been quoted as £1,935 under the old 2023 values.
So compare unit rates and standing charges rather than headline annual figures from different years, and check any quote against your own kWh usage rather than against a number you half remember. Our January price cap piece goes through the forecast in more detail.
What counts as the best energy tariff right now?
There’s no single best energy tariff for everyone. The right answer depends on how much risk you want to carry, how long you plan to stay put, and whether your usage pattern suits a time of use deal. Broadly, you’re choosing between four types.
- Standard variable tariff, which moves with Ofgem’s price cap every three months.
- Fixed tariff, which locks your unit rate and standing charge for a set term, usually 12 or 24 months.
- Tracker tariff, which follows wholesale prices more closely and can move up or down without warning.
- Time of use tariff, such as Economy 7, which charges less overnight and more by day.
Ofgem says around 35% of UK households, about 11 million, are already on a fixed deal. The rest are riding the price cap up and down every quarter, whether they meant to or not.
Is a fixed deal the best energy tariff before winter?
For most households heading into the colder months, a fixed tariff priced at or below the current price cap is the strongest option available. It gives you a known monthly cost while the cap itself is expected to climb, and it removes the anxiety of checking the news every quarter.
The catch is exit fees. Fixed deals commonly charge an early exit fee per fuel, and many suppliers waive it if you switch to another of their own tariffs. The amount varies a lot between suppliers, so check the figure on the specific deal rather than assuming a typical number. Read the terms before you sign, not after, when it’s a much less useful thing to know.
A one year fix suits most people. Our guide to two-year tariffs goes into when the longer lock in actually pays off, and when it just adds risk, and our guide to fixed price energy tariffs covers the mechanics.
When a tracker or variable deal beats a fix
A tracker tariff isn’t usually the one to pick right before a known price rise, because you’re exposed to the same wholesale swings pushing the cap up. Trackers tend to suit people comfortable watching the market and switching quickly if rates move against them, rather than households who just want certainty.
Staying on the standard variable tariff only really makes sense if you expect to move house soon, or if every available fix in your area is priced above the current cap. Check what’s on the table before assuming the cap is your best option by default. Our tracker tariff guide breaks down how the pricing actually works.
Could Economy 7 be your best energy tariff?
If your household runs a storage heater, an electric car, or appliances you can genuinely delay until the small hours, Economy 7 can beat a standard rate on the electricity side. You get roughly seven hours of much cheaper overnight electricity in exchange for a higher daytime rate.
The rule of thumb is the one that decides it: you need roughly 40% of your electricity use to fall in the overnight window to break even. Below that, the higher daytime rate outweighs the cheap hours and you pay more overall. Most homes without storage heating or an EV do not get near 40%.
Our Economy 7 guide goes through how to work out your own split before you commit, which is worth ten minutes given how badly this one can go if you guess.
How to actually compare and switch
Once you’ve decided which type of tariff suits your household, comparing suppliers is the easy part. You’ll need:
- Your postcode and a recent bill, or an estimate of your annual usage in kWh.
- Whether you’re on a single fuel or dual fuel setup.
- Any exit fees on your current deal, so you can weigh them against the saving.
Switching supplier in Great Britain takes about five working days, with no downtime, no engineer visit and nothing to unplug. There’s also a 14 day cooling off period if you change your mind. For the current numbers behind the cap itself, our price cap explainer is a useful companion read.
Key takeaways
- The best energy tariff depends on your risk appetite and usage pattern, not a single cheapest answer.
- Compare unit rates rather than headline annual figures, because Ofgem changed its typical usage basis on 1 July 2026.
- Fixed deals below the current cap suit most households heading into winter.
- Trackers suit confident switchers, not people who want to set and forget.
- Economy 7 only pays off if roughly 40% or more of your electricity use is overnight.
- Switching takes about five working days and costs nothing.
Frequently asked questions about finding the best energy tariff
- How often can I switch energy tariff?
- As often as you like, though exit fees on a fixed deal may apply if you leave before the term ends. There’s no limit on switching once you’re free of any early exit charge.
- Will a fixed tariff protect me from the January price rise?
- Yes, if you fix before the change takes effect. Your rate is locked for the term of the deal regardless of what happens to the price cap afterwards. Ofgem confirms the January figure in late November.
- Why does this year’s cap figure look lower than I remember?
- Because Ofgem lowered its typical household consumption values on 1 July 2026. October’s £1,723 cap would have been quoted as £1,935 under the old values, so figures from different years are not directly comparable.
- Is the cheapest energy tariff always the best one?
- Not necessarily. A slightly pricier deal with no exit fees, or a supplier with a stronger service record, can work out better if your circumstances might change.
- Do I need a smart meter to get the best energy tariff?
- Not for a standard fixed or variable deal, but time of use tariffs and dynamic pricing plans generally do require one.
- What happens if my supplier goes bust after I switch?
- Ofgem moves your account to a new supplier automatically and your supply is never interrupted, though your tariff terms may change under the new provider.
None of this needs to take longer than a cup of tea. Compare what’s actually available for your postcode, weigh any exit fees against the saving, and lock in the best energy tariff for your household before the next price change lands.
Sources
- Ofgem, Energy price cap will rise by 4% from October 2026. The £1,723 cap, the 35% and 11 million fixed tariff figures, and the £1,935 comparison under the old consumption values.
- Cornwall Insight, Predictions and insights into the Default Tariff Cap. The January 2027 forecast.
- Ofgem, Energy price cap. How the cap is set and when it is confirmed.
Checked 25 September 2026. Exit fees and tariff availability vary by supplier and postcode, so treat this as a guide to the choice rather than a quote.
