Best fixed energy deals UK (May 2026): how to choose
A UK-focused guide to fixed tariffs in May 2026: what “best” really means, what to check (exit fees, meter type, region), and how to compare confidently.
- See what makes a fixed deal good value for your household (not just the headline price)
- Understand fixed vs variable vs tracker tariffs, with UK-specific caveats
- Get an estimated cost comparison using your postcode, usage and meter type
Prices change often. Any examples on this page are estimated and for illustration—your eligibility and rates depend on postcode, meter type and payment method.
Best fixed energy deals in the UK (May 2026): the fast answer
In May 2026, the best fixed energy deal for most UK households is usually the one that delivers the lowest estimated annual cost for your exact details (postcode + meter + payment method + usage) without restrictive terms (high exit fees, short-lived discounts, or mismatched meter eligibility).
Important: There is no single “best” fixed tariff for everyone in the UK because unit rates and standing charges vary by region, and offers vary by meter type (credit vs prepayment vs smart) and payment method (monthly Direct Debit vs receipt of bill).
Key takeaway #1
Check the standing charge as well as the unit rate. A lower unit rate can still cost more overall if the standing charge is high for your region.
Key takeaway #2
Fixed tariffs can include exit fees. If you may move home or switch again soon, a cheaper fix with a big exit fee may not be better value.
Key takeaway #3
The “best” fix is often a 12-month deal that balances price and flexibility—unless you want longer certainty and accept potentially higher costs.
If you want a quick next step: use our comparison form to match fixed deals to your postcode and meter type, then review the shortlist using the checklist below.
Compare fixed tariffs for your home (whole-of-market)
Tell us the basics and we’ll match you with fixed deals that fit your postcode, meter and payment preferences. You’ll see estimated annual costs and key terms so you can compare like-for-like.
Get your fixed-deal quote
We only use your details to prepare your quote and contact you about your results.
What counts as a “fixed deal” (and what doesn’t)
Fixed tariff
Your unit rates and standing charges are set for a period (e.g. 12 months). Your bill still changes with your usage. Exit fees may apply.
Standard Variable Tariff (SVT)
Prices can change. Many SVTs are influenced by the Ofgem price cap. Good for flexibility, less predictable.
Tracker tariff
Rates move in line with a published index or formula. Can be cheaper at times, but can rise. Check how often prices change and any price limits.
Tip: When comparing “best fixed deals”, look beyond the word “fixed”. Some tariffs fix unit rates but add conditions (bundles, add-ons, payment method restrictions) that change the true cost for your home.
Fixed tariff comparison: what to check (May 2026)
Suppliers present deals in different ways. This table shows the decision points that typically separate a genuinely good fixed deal from one that only looks good at first glance.
| What you’re comparing | Why it matters | Good sign | Watch out for |
|---|---|---|---|
| Estimated annual cost (for your usage) | Combines unit rates + standing charges based on your consumption. | Clear assumptions (kWh and region shown). | A low headline price that assumes unrealistically low usage. |
| Standing charge | You pay it daily even if you use no energy. | Competitive for your region. | Very high standing charge that erodes savings. |
| Exit fees | Cost to leave before the end of the fix. | Low/none, or clearly stated per fuel. | High fees that could outweigh any benefit if you move or switch again. |
| Eligibility (meter & payment) | Not all deals are available for prepay/Economy 7/receipt of bill. | You’re explicitly eligible (e.g. smart prepay supported). | Assumes monthly Direct Debit or excludes your meter type. |
| Fix length (12/18/24 months) | Longer fixes increase certainty but can lock you in. | Matches your likely time at the property. | Long term + high exit fee when you may move. |
Decision checklist: who a fixed deal suits
- You want predictable rates for a set period (even though your usage can change your bill).
- You plan to stay put for most of the fix term (or the exit fee is low enough).
- You can meet the payment method required (often monthly Direct Debit).
- Your meter type is supported (especially important for prepay and Economy 7).
Who may be better with variable/tracker
- You expect to move soon and the fixed tariff has meaningful exit fees.
- You’re on (or need) prepayment and fixed options are limited in your area.
- You want flexibility to switch quickly if better deals appear.
- You’re considering a tracker and you can tolerate the risk of rates rising.
Practical tip: When you shortlist deals, compare them on the same basis: same payment method, same meter type, and your best estimate of annual kWh usage (electricity and gas).
Costs, exclusions and common pitfalls (UK-specific)
1) Exit fees can change the “best” deal
A fixed tariff may charge an exit fee per fuel (electricity and/or gas) if you leave early. If you think you’ll move or switch within the term, include that risk in your decision.
If a tariff is only slightly cheaper but has a large exit fee, it may not be better value overall.
2) Direct Debit vs receipt of bill pricing
Some tariffs offer their best rates only for monthly Direct Debit. If you pay on receipt of bill, compare using rates for that method—don’t assume you’ll get the Direct Debit price.
If you can switch to Direct Debit, it can broaden eligibility—just make sure it’s manageable for your budgeting.
3) Meter type restrictions (prepay & Economy 7)
Not every supplier supports every meter setup. Economy 7 (multi-rate) and prepayment can have fewer fixed options or different rates.
If you’re not sure which meter you have, check your bill or your in-home display (smart meter).
4) Standing charge differences by region
In Great Britain, electricity distribution regions affect standing charges and unit rates. A deal that’s great in one postcode can be less competitive elsewhere.
Always compare using your postcode, not a national average.
5) Dual fuel isn’t always cheaper
Some households assume one supplier for gas + electricity is automatically best. In reality, the cheapest option may be separate suppliers—though that can mean two accounts to manage.
Two realistic scenarios (illustrative numbers)
Scenario A: Medium-use dual fuel household
Assumptions: Great Britain; monthly Direct Debit; credit meter; usage 2,900 kWh electricity + 12,000 kWh gas; rates shown are examples.
- Example 12-month fix
- Est. annual cost: £1,720 (includes standing charges). Exit fee: £100 per fuel.
- Example SVT
- Est. annual cost: £1,780 (variable; may change). No exit fee.
How to interpret: the fix looks ~£60/year cheaper on these assumptions. But if you might leave early, potential exit fees could outweigh that difference.
Scenario B: Low-use flat (electricity only)
Assumptions: monthly Direct Debit; usage 1,800 kWh electricity; high standing charge makes a bigger impact.
- Example “low unit rate” fix
- Unit rate lower, but standing charge higher. Est. annual cost: £690.
- Example “balanced” fix
- Slightly higher unit rate, lower standing charge. Est. annual cost: £660.
How to interpret: for lower usage, the standing charge can dominate—so the deal with the lowest unit rate may not be the cheapest overall.
Numbers note: These scenarios are illustrations, not live market prices. Always confirm the tariff’s actual unit rates, standing charges, term length and exit fees before switching.
FAQs: fixed energy deals in the UK
Are fixed tariffs covered by the Ofgem price cap?
The Ofgem price cap is primarily associated with default tariffs (such as SVTs) in Great Britain. Fixed tariffs are competitively set by suppliers and may be above or below typical SVT levels. Always compare the estimated annual cost for your home.
Will my bill stay the same on a fixed deal?
No. A fixed deal fixes your rates (unit rate and standing charge) for the term, but your bill can still go up or down depending on how much energy you use and any changes to your payment plan.
Do fixed deals usually have exit fees?
Often, yes—though not always. Exit fees are typically listed in the tariff’s key terms and may apply per fuel. If you’re likely to move or switch again, prioritise low or no exit fees.
Can I get a fixed deal on prepayment?
Sometimes, but options can be more limited and rates may differ from credit meter deals. If you have a traditional key/card meter or smart prepay, make sure the tariff explicitly supports your setup.
What if I have Economy 7 or a multi-rate meter?
You’ll need an Economy 7/multi-rate-compatible tariff. Compare both the day and night rates and check whether your usage pattern suits it (e.g. charging storage heaters overnight). Not all suppliers offer competitive multi-rate fixes in every region.
How long does switching take in the UK?
Switching timelines vary by supplier and circumstances. Many switches complete in a matter of days, but it can take longer if there are meter issues, address mismatches, or an outstanding balance dispute. Your supply shouldn’t be interrupted during a normal switch.
Should I fix for 12, 18 or 24 months?
A 12‑month fix is often a sensible balance between price and flexibility, but the right term depends on your risk tolerance and how long you expect to stay in the property. Longer fixes can provide certainty but may cost more and may include higher exit fees.
What details do I need to compare accurately?
Your postcode, meter type, payment method, and your best estimate of annual usage in kWh for electricity (and gas if applicable). If you don’t know your usage, your annual statement or online account usually shows it.
Trust, methodology and sources
How we assess “best fixed energy deals”
- Estimated annual cost for the household: We prioritise deals that appear lowest cost based on the user’s postcode, meter type, payment method, and kWh usage assumptions.
- Total cost structure: We consider the balance of unit rates and standing charges (standing charge can be decisive for low usage homes).
- Tariff terms: We check fix length, exit fees (per fuel), and any eligibility constraints that commonly affect UK households (e.g. prepayment, Economy 7).
- User suitability: We include guidance for different household situations (moving soon, low usage, multi-rate meters), not just “cheapest”.
Limitations and important caveats
- Prices move frequently: Suppliers can withdraw or change deals quickly; always confirm rates at the point of application.
- Regional variation: Electricity distribution regions mean standing charges and unit rates differ across Great Britain.
- Your bill depends on usage: Even with fixed rates, your actual spend depends on kWh consumed and payment plan settings.
- Eligibility: Your meter type (credit/prepay/smart/Economy 7) and payment method may exclude some tariffs.
Sources (UK)
- Ofgem (UK energy regulator) — consumer guidance and market rules
- Citizens Advice: energy — practical advice on tariffs, bills and switching
- GOV.UK: energy — official information on support and services
EnergyPlus is a whole-of-market comparison service for UK homes. We aim to present clear, user-first comparisons. Where supplier terms differ, we highlight the differences so you can decide confidently.
Ready to check the best fixed deals for your postcode?
Get a personalised shortlist with estimated annual costs and key terms (exit fees, fix length, meter eligibility). It takes a couple of minutes.
Reminder: Always review the supplier’s tariff information before switching. If you’re in debt to your current supplier or on prepayment, switching may have additional steps.
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