Cheapest fixed energy deal right now in the UK (what to check)
Fixed tariffs can be cheaper than the price cap for some homes, but the “cheapest” depends on your region, payment method and meter type. Use this guide to spot a genuinely good fix and compare whole-of-market quotes in minutes.
- See what “cheapest fixed deal” really means (unit rates + standing charges)
- Check eligibility: credit vs prepay, smart meters, Economy 7, exit fees
- Use our comparison form to get personalised fixed quotes for your postcode
Prices change frequently. “Cheapest” is always based on your details (postcode, meter and payment type) and an estimated annual cost, not a guarantee.
Fast answer: the cheapest fixed deal is the one with the lowest estimated annual cost for your postcode and meter
In the UK there isn’t a single fixed tariff that’s “cheapest for everyone” because unit rates and standing charges vary by region, and some tariffs are only available for certain meter and payment types. The right way to judge “cheapest fixed energy deal right now” is:
- Compare like-for-like: same payment method (Direct Debit vs pay-on-receipt), same meter (single rate vs Economy 7), same consumption estimate.
- Rank by estimated annual cost (unit rates + standing charges), not just the headline “p/kWh”.
- Check exit fees and term length (often 12–24 months). A low price can still be poor value if you might need to leave early.
Quick reality check: Fixed deals can be cheaper than the Ofgem price cap for some households, but they can also be more expensive. Whether a fix is “good” depends on your tariff today, your usage pattern, and how long you plan to stay.
Key takeaways
- “Cheapest” means lowest total cost, not just low unit rates.
- Standing charges can swing the result, especially for low users.
- Economy 7 / smart / prepay can change which deals you can get.
- Always read exit fees and what happens at the end of the fix.
If you only do one thing
Get personalised quotes by entering your postcode and (if you know it) your annual usage in kWh. If you don’t know your usage, we can estimate it, but your results will be more accurate with real numbers.
Compare today’s cheapest fixed deals for your postcode
To find the cheapest fixed deal right now for your home, we need a few details that change the pricing you’re offered. We’ll show fixed options you’re eligible for and rank them by estimated annual cost.
What usually makes a fixed deal “cheapest”?
- Lower standing charge (often overlooked)
- This can matter more than unit rates for low-to-medium usage homes.
- Direct Debit pricing
- Many suppliers price their best deals for monthly Direct Debit, not pay-on-receipt.
- Correct meter type
- Single-rate electricity, Economy 7, smart prepay, and traditional prepay can all have different tariff sets.
- Right term length for your plans
- A 24‑month fix can be cheap today but risky if you might move and face exit fees.
Tenants: you can usually switch if you pay the energy bills and have the account in your name. If bills are included in rent or the landlord controls the supply, you may not be able to.
Get fixed quotes (whole of market)
Enter your details to see eligible fixed tariffs and the estimated yearly cost. Fields marked required help us rank accurately.
Two realistic examples (with numbers)
Scenario A: lower electricity use (standing charge matters)
Assumptions: Single-rate electricity + gas, paying by monthly Direct Debit, medium-sized flat. Annual usage: Electricity 1,800 kWh, Gas 8,000 kWh. (Illustrative only.)
| Option | What changes | Estimated effect |
|---|---|---|
| Fix with slightly higher unit rate | Lower standing charges | Can be cheaper overall for low usage |
| Fix with the lowest unit rate | Higher standing charges | May cost more once fixed daily charges are added |
Why this matters: standing charges are paid every day regardless of usage, so low users can be disproportionately affected.
Scenario B: Economy 7 household (night rate fit)
Assumptions: Electricity only (no gas), Economy 7, storage heaters/EV charging overnight. Annual usage: 3,400 kWh with 60% at night (2,040 kWh night / 1,360 kWh day). (Illustrative only.)
Rule of thumb: Economy 7 fixed deals tend to suit you only if a large share of your electricity is used overnight. If most use is daytime, a single-rate tariff can be cheaper even if the night rate looks attractive.
Your comparison should use your actual split (day vs night). If you don’t know it, check your bill or smart meter readings for a typical month.
Important: The examples above explain how cheapest fixed deals are decided. Your exact prices depend on region, supplier, tariff availability, and your meter/payment details at the time you quote.
Fixed vs variable: a quick comparison (UK households)
If you’re deciding whether to lock in a fixed deal, use this table alongside your personalised quotes. It highlights trade-offs that affect real-world cost and flexibility.
| Feature | Fixed tariff | Standard variable tariff (SVT) | What to check |
|---|---|---|---|
| Price changes | Unit rates/standing charges fixed for the term (unless contract allows changes) | Can change; SVTs are typically aligned with the Ofgem price cap levels | Tariff end date, what happens when it ends |
| Exit fees | Often yes | Typically no | Fee amount per fuel, and when it applies |
| Best for | People who want bill certainty and plan to stay put | People who want flexibility or expect rates to fall | How likely you are to move or switch again soon |
| “Cheapest” claims | Depends on your region, usage, meter and payment type | Not designed to be the cheapest; it’s the default | Compare by estimated annual cost, not just p/kWh |
Cheapest fixed deal checklist
- Fuel type: dual fuel vs electricity-only vs gas-only.
- Payment method: Direct Debit vs variable Direct Debit vs cash/cheque on receipt.
- Meter: single-rate, Economy 7, smart prepay, traditional prepay.
- Rates: unit rates (p/kWh) and standing charges (p/day).
- Exit fees: per fuel and conditions.
- Warm Home Discount: whether your supplier participates (eligibility rules apply).
Who a fixed deal tends to suit (and who it doesn’t)
Often suits you if:
- You value predictable pricing for 12–24 months.
- You’re likely to stay in the property.
- You can pay by Direct Debit (access to more deals).
Think twice if:
- You may move soon (exit fees can apply).
- You’re on prepay and have limited fixed options.
- You prefer to track the price cap and keep flexibility.
This is guidance, not a rule: the best choice depends on your exact quotes and circumstances.
Costs, exclusions and common pitfalls (UK-specific)
These are the main reasons a tariff that looks cheap online can end up costing more in practice. Check them before you switch.
1) Standing charge shock
If two fixed deals have similar unit rates, the one with the lower standing charge can be cheaper overall—especially for low usage homes or empty properties.
2) Exit fees and moving home
Fixed tariffs commonly include exit fees per fuel. If you might move, check whether you can transfer the tariff to your new address or whether the fee applies.
3) Paying by Direct Debit vs on receipt
“Cheapest” results often assume monthly Direct Debit. If you need to pay on receipt or use cash, your available tariffs and rates may differ.
4) Economy 7 mismatch
Economy 7 can be excellent if you use lots of power overnight, but expensive if most of your use is daytime. Always compare using a realistic day/night split.
5) Prepayment availability
Prepay customers may see fewer fixed deals, and some fixes require a smart prepayment meter. If you’re on prepay, ensure the tariff is compatible before starting a switch.
6) Intro discounts and add-ons
Be wary of bundles that look cheap but include conditions (e.g. paperless billing, app-only management) or time-limited credits. Focus on the total estimated annual cost.
Switching protection: In Great Britain, you generally shouldn’t be switched if you’re in debt beyond certain thresholds without agreeing a repayment plan, and there are extra protections for customers in vulnerable situations. If you’re worried, check independent guidance before switching.
FAQs: cheapest fixed energy deal right now (UK)
Is there a single cheapest fixed tariff in the UK today?
No. Energy prices vary by region and can differ by payment method and meter type. The cheapest fixed deal is the one with the lowest estimated annual cost for your postcode and details at the time you compare.
What matters more: unit rate or standing charge?
Both. Unit rates affect what you pay per kWh; standing charges are daily fixed costs. For lower usage households, a higher unit rate can still be cheaper overall if the standing charge is much lower.
Are fixed deals always cheaper than the price cap?
No. The Ofgem price cap limits the level of prices on standard variable tariffs (and some prepay tariffs). A fixed tariff can be below, similar to, or above the cap-equivalent cost depending on what suppliers are offering and your regional rates.
Can I switch to a fixed deal if I have a smart meter?
Usually yes. Some tariffs are smart-meter-friendly and may rely on smart readings for billing. If you’re on smart prepay, check that the tariff supports your meter setup.
Can I get a fixed deal on prepayment?
Sometimes, but options can be more limited. Some fixed tariffs require smart prepayment rather than traditional key/card meters. Compare using “prepay” as your payment type where possible.
How long does switching take in the UK?
Switching times can vary by supplier and circumstances. If there are no issues (like address mismatches or meter details needing confirmation), the process is typically completed within days to a few weeks. You should not lose supply during a switch.
Will I need to submit meter readings?
Often, yes—especially around the switch date—to help produce an accurate opening/closing bill. If you have a smart meter, readings may be sent automatically, but it’s still worth checking the figures used.
What if I’m in a fixed contract already?
Check your end date and any exit fees. Some suppliers allow penalty-free switching in a window near the end of your fix. If you’re far from the end, compare the potential benefit against the exit fee before moving.
If you’re struggling to pay: switching isn’t the only option. You may be eligible for support (including supplier help, payment plans, or grants). Independent guidance is available via Citizens Advice.
How we assess “cheapest fixed energy deal right now” (our methodology)
What we mean by “cheapest”
We treat “cheapest” as the lowest estimated annual cost for a customer profile, based on the supplier’s published unit rates (p/kWh) and standing charges (p/day) for the customer’s region, meter and payment type at the time of comparison.
- Estimated annual cost = (unit rate × annual kWh) + (standing charge × 365), summed across fuels.
- Where the user doesn’t know usage, we may use a reasonable estimate; results are more accurate with real kWh from bills.
Limitations and caveats
- Availability can change daily; suppliers can withdraw tariffs.
- Some deals are only available to new customers or specific meter types.
- Your actual bills can differ due to weather, occupancy and usage behaviour.
- We don’t guarantee savings; we aim to help you make an informed choice.
Editorial trust signals
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: April 2026
Sources we use (UK)
- Ofgem: Energy price cap (how the cap works and current levels)
- Citizens Advice: Energy supply and switching (consumer rights and practical help)
- GOV.UK: Energy policy and support collections (official information and schemes)
- GOV.UK: Warm Home Discount (eligibility and how it’s applied)
We also reference suppliers’ tariff information and Terms & Conditions at the time you request a quote.
Ready to check the cheapest fixed deals for your home?
Compare whole-of-market fixed tariffs by estimated annual cost, with the UK-specific checks that stop nasty surprises (meter type, payment method, exit fees).
Reminder: If you’re currently on a fixed tariff, check exit fees before switching. If you’re within your supplier’s penalty-free window near the end of your fix, switching may be simpler.
Back to Energy News