What is a fixed energy tariff?

A fixed energy tariff sets your unit rates (and usually your standing charge) for a set period, such as 12 or 24 months. This helps protect you from price rises during the fixed term, making it easier to budget.

Is a fixed tariff the same as the Ofgem price cap?

No. The Ofgem price cap limits the maximum rates suppliers can charge on default variable tariffs. A fixed tariff is a deal with rates locked for a term, which may be above or below the current price-capped variable tariff depending on market conditions.

Can my bills still go up on a fixed tariff?

Your rates are fixed, but your total bill can change if you use more energy (for example, in winter) or if you change your payment method or discounts. If your standing charge is fixed, that stays the same too for the fixed term.

Are there exit fees on fixed energy tariffs?

Many fixed tariffs include an early exit fee if you leave before the end of the term, but not all do. Always check the tariff’s key details before switching so you know the cost of leaving early.

When is a fixed tariff a good idea?

A fixed tariff can suit you if you want predictable rates, prefer budget certainty, or think prices may rise. It can also be helpful if you want to lock in a competitive deal for a set period.

When might a variable tariff be better than a fixed tariff?

A variable tariff may be better if prices are expected to fall, you want flexibility to switch without exit fees, or you don’t want to commit to a contract term. Comparing total costs (unit rates + standing charge) is key.

What happens when my fixed tariff ends?

At the end of the fixed term, you’ll usually move onto your supplier’s standard variable tariff unless you switch or agree a new deal. To avoid paying more than necessary, compare options and switch before the end date.

How do I compare fixed tariffs accurately?

Compare the unit rate(s), standing charge, tariff length, and any exit fees. Use your annual usage (kWh) for gas and electricity to estimate the total yearly cost, and check whether prices are fixed for both unit rate and standing charge.

Can I switch to a fixed tariff if I have a smart meter or prepayment meter?

In many cases, yes—fixed tariffs are available for smart meters and, in some cases, prepayment meters. Availability depends on your supplier and your meter type, so it’s worth checking eligibility before switching.

How do I choose the right fixed term length (12 vs 24 months)?

A shorter fix can offer more flexibility if prices fall, while a longer fix can provide longer price certainty. The best option depends on the deal’s rates, exit fees, and how much flexibility you want to switch later.

How can Energyplus help me switch to a fixed tariff?

Energyplus can help you compare fixed tariff options and choose a deal that fits your usage and preferences. Once you’ve selected a tariff, you can start the switch online and your new supplier will handle the transfer process.

Fixed energy tariff facts (UK): what they mean & when to switch

Understand fixed tariffs, avoid costly myths, and compare whole-of-market UK deals in minutes. Get personalised results for your home and switch with confidence.

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Compare fixed tariffs Read the key facts

Home energy only. You can choose to switch now or keep your current supplier. Availability varies by region, meter type and credit status.

Compare fixed energy tariffs for your home

A fixed energy tariff sets your unit rate (p/kWh) and standing charge (p/day) for a set term (often 12–24 months). It can help with budgeting, but it’s not always the cheapest option — especially if your usage or circumstances change.

EnergyPlus is a whole-of-market UK comparison service. Use the form to get matched results based on your postcode and household details.

What you’ll need (takes 2 minutes)

Your postcode (to identify your region and network)
Rough idea of your usage (or your latest bill if you have it)
Whether you pay by Direct Debit and your meter type (smart / credit / prepayment)

Fixed energy tariff facts you can rely on

A fixed tariff can be a sensible choice when you want price certainty — but it’s important to understand what is fixed, what can still change, and how suppliers price deals in the UK. Below are the key facts homeowners and tenants should know before switching.

Fact 1: Your unit rate & standing charge are fixed (for the term)

On a fixed tariff, your unit rate (p/kWh) and standing charge (p/day) are typically set for the length of the contract. Your bill can still go up or down if your usage changes (e.g. colder winter, working from home, a new EV, or electric heating).

Fact 2: Fixed does not mean “capped” or “cheapest”

Some fixed deals can be higher than variable tariffs at the time you take them out. Fixed tariffs trade potential savings for predictability. The best option depends on rates available in your region, your payment method and your appetite for risk.

Fact 3: Exit fees are common

Many fixed tariffs include an exit fee if you leave before the end of the term. Fees vary by supplier and may apply per fuel (gas and electricity). Always check this if you might move home or plan to switch again soon.

Fact 4: The Energy Price Cap is separate

In Great Britain, Ofgem’s Energy Price Cap limits rates for many standard variable tariffs. It doesn’t cap your total bill and it doesn’t apply in the same way to fixed tariffs. A fixed tariff may be above or below price-cap levels at the time you sign up.

Benefits (and trade-offs) of a fixed tariff

Fixed energy tariffs can suit many UK households, but they aren’t one-size-fits-all. These are the practical upsides and downsides to weigh up before you commit.

More predictable bills

Rates stay the same for the term, so your costs track your usage rather than market changes — useful for budgeting through winter.

Protection from sudden rises

If wholesale prices rise, your fixed rates don’t. This can be reassuring if you prefer certainty over chasing short-term deals.

Clear contract term

You know exactly when your tariff ends. You can plan to review and switch again before you roll onto a standard variable tariff.

You may miss cheaper rates

If prices fall after you fix, you’re locked in unless you pay an exit fee (or your tariff has flexible terms).

Exit fees can apply

Leaving early can cost. Always check whether fees apply per fuel and whether moving home is treated differently.

Not all households qualify

Some fixed deals may vary by meter type (smart, prepayment), payment method, or credit checks depending on the supplier.

Tip: A “good” fixed tariff is usually one with competitive unit rate and standing charge for your region, plus exit fees that match your plans (e.g. £0 if you might move, or a small fee if you’re happy to commit).

How to choose the right fixed tariff (UK checklist)

When you compare fixed tariffs, look beyond the headline monthly estimate. A good comparison considers the full contract and how you actually use energy at home.

Check your meter type and payment method. Smart meters, Economy 7/10, and prepayment meters can affect tariff availability and pricing.
Compare unit rate and standing charge together. A low unit rate with a high standing charge (or vice-versa) may not suit your usage pattern.
Look for exit fees and contract length. If you may move home or want flexibility, prioritise low/zero exit fees or shorter terms.
Check what happens at the end of the fix. Many customers roll onto a standard variable tariff. Set a reminder to review before your end date.
Confirm the tariff is for home energy (not business). This page is for domestic supply only; business tariffs have different terms and pricing.

If you’re not sure: use your annual usage

If you have it, your annual consumption in kWh makes comparisons more accurate than monthly spend. If you don’t, a recent bill or a rough estimate still works — we’ll show options matched to your details.

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Understanding unit rates, standing charges and exit fees

UK energy prices are usually made up of two parts. Knowing how they work helps you spot a “good” fixed tariff for your household.

Price component	What it is	Why it matters for fixed tariffs
Unit rate (p/kWh)	The price for each kilowatt hour you use.	High-usage homes often benefit more from a lower unit rate, even if the standing charge is slightly higher.
Standing charge (p/day)	A daily fee covering network, metering and supply costs.	Lower-usage homes (e.g. small flats) can be more sensitive to standing charges.
Exit fee	A charge for leaving a fixed tariff early.	If you may switch again soon, exit fees can outweigh savings. Check if it applies per fuel.
Direct Debit discount / payment pricing	Some suppliers price tariffs differently depending on payment method.	When comparing, ensure the tariff matches how you intend to pay — otherwise the estimate may be misleading.

A quick example (why standing charge matters)

Two fixed tariffs can look similar, but a higher standing charge can make a noticeable difference for low usage households. If you’re in a small property or you’re away often, compare using annual kWh where possible.

What about VAT?

Domestic energy in the UK is typically charged at 5% VAT. Tariff rates are usually shown inclusive of VAT — but always check the tariff details when you compare.

Regional differences: why fixed tariff prices vary across the UK

You can see different fixed tariff rates depending on where you live. That’s normal — and it’s why postcode-based comparisons are essential.

Network costs

Electricity and gas distribution charges vary by region and can affect standing charges and unit rates.

Meter and tariff type

Economy 7/10, smart meters and prepayment options can change which fixed deals are available and how they’re priced.

Supplier appetite

Some suppliers focus on certain regions or customer profiles, which can influence pricing and availability.

Best practice

Always compare using your postcode and the correct payment method. A “top deal” in one region may not exist in another.

Check deals for my postcode

Common fixed tariff mistakes (and how to avoid them)

1) Fixing without checking the standing charge

A low unit rate can look great, but a higher standing charge may increase overall costs for lower usage homes. Compare total annual cost where possible.

2) Ignoring exit fees

If you might move or switch again, exit fees can wipe out savings. Choose a tariff with terms that match your plans.

3) Assuming “fixed” guarantees a lower bill

Your bill depends on usage. Even on a fixed tariff, higher consumption (or estimated readings) can increase payments.

4) Not reviewing at the end of the term

Many customers roll onto a standard variable tariff when the fix ends. Set a reminder to compare again before renewal.

5) Comparing using the wrong details

Payment method, meter type and region affect eligibility and pricing. Use your postcode and accurate meter details for meaningful results.

Quick check before you switch

Do you have gas, electricity, or both?
Are your readings up to date (or do you have a smart meter)?
Do you expect big usage changes in the next 12 months?

Get fixed tariffs matched to you

Fixed energy tariff FAQs

Is a fixed tariff right for me?

It can be if you value predictable rates and want to avoid sudden price rises. If you expect prices to fall, or you need flexibility, a variable tariff or a shorter fix may suit better.

Can my supplier change prices on a fixed tariff?

Your unit rate and standing charge are usually fixed for the term. Your bill may still change with usage. Always read the tariff information to confirm what’s fixed and what isn’t.

Will I have to pay an exit fee if I move house?

It depends on the supplier and tariff. Some allow you to transfer the tariff to your new address (if they supply there); others may charge if you end the contract early.

Does fixing mean I’m protected by the Energy Price Cap?

The price cap primarily applies to certain standard variable tariffs in Great Britain. Fixed tariffs are separate products and can be priced above or below cap levels at the time you sign up.

How long should I fix for: 12 or 24 months?

A 12-month fix offers more flexibility; a 24-month fix can extend certainty but may include higher exit fees. Compare both using your postcode and expected usage.

Do fixed tariffs work with smart meters?

Yes. Availability depends on the supplier and your meter setup. If you have a smart meter, it can also help keep bills accurate through automatic readings.

Why households use EnergyPlus

Switching energy is easier when the information is clear. Here’s what customers tell us they value when comparing fixed tariffs.

“No confusing jargon”

“I finally understood the difference between unit rates and standing charges and picked a fix that fit our usage.”

— Homeowner, West Midlands

“Options across the market”

“The comparison made it easy to see which suppliers had fixed deals for our postcode and meter type.”

— Tenant, Greater Manchester

“Clear on fees”

“I didn’t realise exit fees could apply per fuel. EnergyPlus helped me choose a tariff I could live with.”

— Homeowner, South East

Trust signals (what to check on any tariff)

Tariff name, term length and end date
Unit rate and standing charge (your region)
Exit fees and when they apply
Payment method assumptions (e.g. Direct Debit)

Ready to see fixed tariffs available in your area?

Use our whole-of-market comparison to find fixed home energy deals that match your postcode, meter type and payment preferences.

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If you’re mid-contract, check exit fees before switching. Rates and availability can change.

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