Should I fix my energy price now? What fixing actually means and the one number to check before you switch

The answer isn’t automatically yes.

Fixing can protect you from future price rises and a competitive fixed tariff could save you money. But choosing the wrong deal could leave you paying more than necessary if prices subsequently fall.

Here’s what fixing your energy price actually means, how to decide whether a deal is worth taking and what to check before pressing the button.

Why are people considering fixing their energy now?

Energy bills rose substantially in July.

There is one complication worth knowing about because it explains why you may see different price-cap figures reported.

Ofgem changed its Typical Domestic Consumption Values from 1 July to reflect falling average household energy consumption.

Using the new definition, the July to September cap equates to around £1,663 a year for a typical dual-fuel household paying by Direct Debit. The comparable figure for April to June would have been £1,477.

You may also see a figure of £1,862 quoted for the current cap. That is the figure calculated using the previous higher typical-consumption assumptions.

Neither number represents the most you can pay.

The price cap controls how much suppliers can charge per unit of gas and electricity, along with standing charges, on eligible default tariffs. Use more energy and you will pay more. Use less and you can pay less.

More importantly for anyone wondering whether to fix, the cap changes every three months.

That means households on standard variable tariffs do not yet know exactly what their rates will be throughout the coming winter.

Energy consultancy Cornwall Insight’s latest published forecast on 22 July put the October to December typical bill at roughly £1,700 under the new consumption definition.

That is a forecast, not the confirmed October cap, and wholesale prices can move before the final figure is set.

What does fixing your energy price actually mean?

A fixed energy tariff normally means the unit rates you pay for gas and electricity are fixed for a set period, often around 12 months.

It does not normally mean your total energy bill is fixed.

If you use more energy, you will still pay more.

Think of it like a supermarket promising that a bottle of milk will cost £1.50 for the next year. It hasn’t promised that you’ll spend only £1.50 a month on milk. Buy four bottles and you still have to pay for four.

Your energy tariff works in much the same way.

The tariff determines what you pay for each unit of gas and electricity, together with the applicable standing charges. Your consumption determines your eventual bill.

So, should I fix my energy price?

For some households, a competitive fixed tariff could make sense now, particularly if the tariff offers rates that compare favourably with what you are already paying.

But don’t fix purely because somebody predicts bills will rise.

There are really two things you can gain from a fixed deal:

• A competitive price
• Certainty about your rates

If a fixed tariff is clearly cheaper than your current deal based on your own usage, the decision may be relatively straightforward.

If it costs roughly the same, you are deciding how much you value certainty.

If it is significantly more expensive, you are effectively paying a premium now in the hope that future price rises eventually make your fix worthwhile.

The number you shouldn’t compare

This is where people can easily go wrong.

Don’t simply look at the familiar headline price-cap number and assume that is what you personally pay.

The headline figure is based on a prescribed level of typical consumption.

A household using a lot of energy can pay considerably more while still being protected by the cap. A low-energy household can pay much less.

Instead, find your latest energy statement and look for your annual consumption in kWh for electricity and, where applicable, gas.

Then compare how much a proposed tariff would charge for the amount of energy you actually use.

Check these four things before fixing

1. The unit rates

Look at the price per kilowatt hour for both electricity and gas.

This becomes particularly important if your household consumes substantially more or less energy than the typical household used in headline price-cap calculations.

2. The standing charges

This is the amount you pay each day regardless of how much energy you use.

A tariff advertising an attractive unit rate may look rather less impressive once its standing charges are included.

3. The exit fee

This could become extremely important.

Imagine fixing today and then energy prices fall considerably next year. You find a much cheaper deal and want to move.

A large exit fee could wipe out part of the saving.

Check whether an exit fee applies per fuel too. A fee may effectively be doubled for a household taking both gas and electricity.

4. How long you’re fixing for

A 12-month fix and a two-year fix are quite different commitments.

The longer you fix, the longer you are protected against increases, but also the longer you could potentially remain on above-market rates if energy prices fall.

What happens if I don’t fix?

You don’t have to do anything.

If you are currently on an eligible standard variable tariff, you can stay there.

The Ofgem price cap limits the unit rates and standing charges suppliers can charge on these tariffs, but the cap is reviewed regularly and those rates can move up or down.

Remaining on a variable deal therefore gives you flexibility, but less certainty about what your energy rates will be in future.

What happens if energy prices fall after I fix?

Your fixed rates generally remain in place for the agreed period.

That is the trade-off.

You receive protection if market prices rise, but don’t automatically receive the benefit if prices fall.

You might be able to leave your fix and move elsewhere, but first calculate whether the saving would outweigh any exit fees.

Could fixing actually save me money?

Yes.

One of the biggest misconceptions about the energy price cap is that it represents the cheapest energy tariff available.

It doesn’t.

Suppliers can offer deals below capped default-tariff rates.

That means the most useful question isn’t simply:

“Will the energy price cap rise?”

It’s:

“Can I buy the amount of energy I expect to use more cheaply on another tariff?”

That turns the decision into a comparison based on your household rather than a prediction about the energy market.

What if I can’t afford my energy bill at all?

Switching tariff can help some households, but it isn’t a solution if you are already unable to keep up with bills.

If you’re struggling, contact your supplier rather than simply cancelling a Direct Debit or ignoring the bill.

There may also be grants, hardship schemes and other forms of support available depending on your circumstances.

Should I wait for the next energy price cap?

You can, but trying to pick the perfect moment to fix is extremely difficult.

The next cap will cover October to December 2026.

As of 22 July, Cornwall Insight was forecasting an annualised figure of about £1,700 using Ofgem’s new typical-consumption assumptions.

Its equivalent forecast using the previous consumption assumptions was around £1,906.

The distinction matters because the definition of a typical household changed in July.

More importantly, neither is the confirmed October price cap.

Wholesale markets can move, forecasts change and the fixed tariffs available today may disappear or be replaced.

Rather than trying to guess the perfect day to fix, decide what tariff price would make fixing worthwhile for your household.

What to do today

If you’re asking “should I fix my energy price?”, you can make a much better decision with around ten minutes of homework.

1. Find your latest bill. Note your current tariff, unit rates, standing charges and annual gas and electricity use.
2. Check whether you’re already fixed. Don’t assume you’re currently paying capped variable rates.
3. Compare tariffs using your real usage. Enter your actual annual kWh figures wherever possible.
4. Compare estimated annual costs. Don’t judge a deal by a headline monthly Direct Debit alone.
5. Check exit fees. Find out whether they apply to each fuel.
6. Check the length of the tariff. Make sure you know how long your rates will remain fixed.
7. Read the small print. Check whether any discounts depend on payment method, smart-meter installation or other requirements.

MoneyMagpie verdict: should you fix your energy price?

Frequently asked questions

Should I fix my energy price now?

A fixed tariff may be worth considering if its unit rates and standing charges compare favourably with what you currently pay and you value certainty. Compare the tariff against your actual annual energy consumption rather than relying solely on headline price-cap figures.

Does fixing my energy price mean my bill cannot go up?

No. A fixed tariff normally fixes the rates charged for energy. If you consume more gas or electricity, your total bill can still increase.

What happens if prices fall after I fix?

Your agreed fixed rates usually remain in place. You may be able to leave for a cheaper tariff, but check whether an exit fee applies and calculate whether switching would still save you money.

What is the energy price cap right now?

For 1 July to 30 September 2026, Ofgem’s revised typical-consumption measure produces an annualised figure of around £1,663 for a typical dual-fuel household paying by Direct Debit. You may also see £1,862 quoted using the previous higher consumption assumptions. Neither figure is a maximum household bill.