Cheapest fixed energy tariff after the price cap drop
A practical UK guide to finding genuinely cheap fixed deals (without getting caught out by exit fees, meter rules or higher standing charges).
- See when a fixed deal can still beat the new capped variable rate (and when it won’t)
- Compare fixed vs variable with real-world examples and a simple checklist
- Get a whole-of-market quote in minutes (electricity, gas or dual fuel)
Prices and availability vary by region, payment method, meter type and your usage. Estimates shown are for guidance and may change daily.
Fast answer: what’s the cheapest fixed tariff after the cap drop?
The cheapest fixed energy tariff after a price cap drop is usually the deal that offers the lowest total estimated annual cost for your home (unit rates + standing charges), not necessarily the lowest unit rate advertised.
Key point: After a cap drop, the capped variable tariff can become more competitive. A fixed tariff is only “cheapest” if it stays below your estimated cost on the capped variable rate after including standing charges and any exit fees if you might switch again.
When a fixed deal can be cheapest
- You want bill certainty for 12–24 months
- Fixed rates are below the capped variable estimate in your region
- You’re unlikely to move/switch before the term ends (or exit fees are £0)
When sticking with variable may be better
- You expect further price cap falls soon
- You need flexibility (moving home, tenancy change)
- Fixed tariffs available to you have high standing charges
Best quick next step
Run a comparison using your postcode, meter type and payment method.
If the best fixed deal is only a few pounds cheaper, consider whether the exit fees are worth it.
Check the cheapest fixed deals for your home
We’ll use your details to show available fixed tariffs and estimated annual costs. This is whole-of-market and UK-home focused (not business energy).
Tip: If you have a smart meter, the cheapest option may be a standard fixed tariff or a smart/time-of-use plan depending on your usage pattern. We’ll show what’s available for your meter type.
What you’ll need
- Your postcode (rates vary by region)
- Whether you pay by Direct Debit, on receipt of bill, or prepayment
- Your meter type (credit, prepay, smart, Economy 7)
- Optional: your annual kWh use (from a bill). If not, we’ll estimate.
Get your quote
How to tell if a fixed tariff is actually cheaper than the capped variable
The Ofgem price cap limits the maximum amount suppliers can charge for a typical household on a standard variable tariff (SVT) in each region. Your bill still depends on your usage, your meter, and your payment method.
Step 1: Compare total annual cost (not headline rates)
Use the supplier’s estimated annual cost (or a comparison estimate) that combines unit rates and standing charges. A slightly lower unit rate can be offset by a higher standing charge.
Step 2: Add flexibility costs (exit fees + timing)
If the cap is expected to change again, a fixed tariff with exit fees may stop you switching later. Consider how long you’re likely to stay and whether you might move.
Important: The price cap is not a cap on your total bill, and it doesn’t apply to fixed tariffs. Fixed deals can be above or below the cap depending on market conditions.
Two realistic scenarios (with assumptions)
Scenario A: Typical dual fuel household considering a 12‑month fix
Assumptions: Great Britain; Direct Debit; single-rate electricity meter; medium usage (Ofgem typical values); all figures are illustrative estimates.
- Capped variable estimate (SVT)
- £1,720/year
- Best available fixed estimate
- £1,650/year
- Estimated difference
- ~£70/year lower
If the fixed deal has a £50 exit fee per fuel and you might leave early, the “saving” can disappear quickly. If exit fees are £0, the trade-off is simpler.
Scenario B: Electric-only flat with low usage (standing charges matter)
Assumptions: Direct Debit; single-rate; low usage; illustrative estimates; your region may differ.
- Capped variable estimate (electric only)
- £760/year
- Fixed deal with low unit rate but high standing charge
- £785/year
- Fixed deal with slightly higher unit rate but lower standing charge
- £745/year
For low users, a cheaper unit rate can be less important than the daily standing charge. Always compare the full annual estimate.
Fixed vs capped variable: quick comparison
Use this table to decide what “cheapest” should mean for you: the lowest estimated cost today, or the best balance of price and flexibility over the next year.
| Feature | Fixed tariff | Capped variable (SVT) | What to check |
|---|---|---|---|
| Price changes | Typically locked for term (e.g. 12–24 months) | Can change when cap updates (and supplier changes) | Term length, what’s fixed (unit + standing), any mid-contract clauses |
| Exit fees | Often applies (but not always) | Usually none | £ per fuel; if you may move or switch again |
| “Cheapest” drivers | Depends on your usage and standing charge | Depends on cap level + supplier’s SVT rates | Compare annual estimate in your region, same payment method |
| Eligibility | May exclude some meter types / payment methods | Usually widely available | Prepayment, Economy 7, smart meter requirements |
| Best for | Certainty and budgeting | Flexibility and potential to benefit if cap falls | Your likely time in property and risk tolerance |
Decision checklist: a fixed deal suits you if…
- The fixed estimate is meaningfully below your SVT estimate (not just a token amount)
- You expect to stay put for the tariff term
- Exit fees are £0, or you’re comfortable paying them if needed
- You’ve checked the standing charge and it’s not disproportionately high for your usage
A fixed deal may not suit you if…
- You’re in a short tenancy / likely to move
- You’re on prepayment and choices are limited or more expensive
- You’re considering a smart/time-of-use plan but can’t shift usage to cheaper hours
- The deal has exit fees that would outweigh any realistic benefit
Costs, exclusions and common pitfalls (UK-specific)
After a price cap drop, some “cheap” fixed deals look attractive at first glance. These are the most common reasons a fixed tariff isn’t actually cheaper for a household.
1) Higher standing charges
Some fixes lower the unit rate but raise standing charges. This can be poor value for low-use homes and small flats.
2) Exit fees (per fuel)
Exit fees are often charged for gas and electricity. If you might switch again, factor this in up front.
3) Payment method differences
Direct Debit tariffs are usually cheaper than pay-on-receipt. Always compare using the same payment method.
4) Meter type restrictions
Economy 7, smart meters and prepayment meters can have different rates and fewer eligible deals.
5) “New customer only” fixes
Some of the cheapest fixes are only available to new customers, or exclude certain regions/network areas.
6) Timing around cap changes
The cap changes periodically. Fixing right before a further drop could mean you pay more than SVT later.
If you’re renting: you can usually switch energy supplier if you pay the bills, but check your tenancy agreement and make sure there are no landlord-managed supplies or heat networks. If you have a prepayment meter, you can still compare, but options can be narrower.
FAQs
Is the cheapest fixed tariff always below the Ofgem price cap?
No. The price cap applies to standard variable tariffs, not fixed deals. A fixed tariff can be below or above the cap depending on market pricing and the supplier’s offer in your region.
Why do quotes vary so much by postcode?
Network costs and regional charging mean standing charges and unit rates differ across Great Britain. Your postcode identifies your electricity distribution region and helps match the correct rates.
What’s the difference between unit rate and standing charge?
The unit rate is what you pay per kWh of energy used. The standing charge is a daily fixed cost. For low users, standing charges can dominate the bill, so a “cheap” unit rate isn’t always best overall.
Can I switch to a fixed deal if I have a prepayment meter?
Often yes, but the range of tariffs can be smaller and pricing may differ from Direct Debit tariffs. Some suppliers require a smart prepayment meter or have eligibility checks.
Do fixed tariffs include exit fees?
Many do, but not all. Exit fees are commonly charged per fuel (gas and electricity). If you might move home or plan to switch again soon, prioritise £0 exit fee deals or shorter terms.
What if I don’t know my annual usage in kWh?
You can still compare. We can estimate based on household and property signals, but the most accurate comparison uses kWh from your bill or online account. If your actual usage differs, your real cost will too.
Is it worth fixing right after a cap drop?
It depends on the fixed prices available to you and how you value certainty. If fixed deals are only marginally cheaper than SVT, flexibility may matter more. If fixed deals are meaningfully cheaper and exit fees are low, fixing can still make sense.
Does the cap apply in Northern Ireland?
The Ofgem price cap is for Great Britain. Northern Ireland’s market is regulated differently. If you’re in Northern Ireland, tariff availability and rules can differ.
Trust, methodology and sources
Editorial trust
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- April 2026
How we assess “cheapest fixed tariff”
- We focus on total estimated annual cost (unit rates + standing charges) for a given postcode/region, payment method and meter type.
- We compare against the relevant capped variable tariff estimate (SVT) for the same context, because the cap drop can change what “good value” looks like.
- We include practical constraints such as exit fees, term length, and eligibility (e.g. prepayment, Economy 7, smart meter requirements).
- We prioritise clarity over hype: we use estimated examples and explain when a deal may not be suitable.
Limitations: Tariffs can change daily and some deals have limited availability. Estimated annual costs depend on your actual kWh usage and may not match your bill exactly.
Sources and further guidance
Ready to see the cheapest fixed tariff for your postcode?
Compare whole-of-market fixed deals against the capped variable estimate, with clear exit-fee and standing-charge checks.
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