Cheapest fixed energy deal after the price cap drop
Find out when a fixed tariff can beat the new Ofgem price cap rate, what “cheap” really means for your home, and how to compare whole-of-market options in minutes.
- Clear, UK-specific guidance on fixed vs variable after a cap change
- Two realistic household examples (with assumptions) to sanity-check quotes
- Practical pitfalls: exit fees, smart meter mode, payment method and region
Figures are estimates and tariffs vary by region, meter type and payment method. Always check unit rates, standing charges, exit fees and tariff end dates before switching.
Fast answer: is there a “cheapest fixed deal” after the cap drop?
There isn’t one universal “cheapest fixed tariff” for everyone in the UK. After an Ofgem price cap drop, the lowest-cost fixed deal for your home depends on your region, meter type (credit / prepayment / smart in prepay mode), payment method, and how much energy you use.
What you can do is check whether a fixed tariff is actually cheaper than the capped variable rate for your circumstances — and whether the savings (if any) are worth the trade-offs like exit fees.
Important: The Ofgem price cap limits what suppliers can charge on standard variable and default tariffs per unit of energy (plus standing charges). It is not a cap on your total bill, and it does not apply to most fixed deals.
Key takeaways (quick checklist)
- Compare in p/kWh and p/day, not just “£/year”. Annual estimates change with your usage.
- Check standing charges: a fix with cheap unit rates can still cost more if standing charges are higher.
- Exit fees matter if another cap drop is due before your fix ends.
- Payment method affects price (Direct Debit vs pay on receipt of bill; prepayment often differs).
- Eligibility and meter setup can exclude some homes (e.g., smart prepay mode, economy tariffs, restricted meters).
Compare fixed deals that could beat the new cap (whole-of-market)
The most reliable way to find the cheapest fixed energy deal for your household is to compare personalised quotes using your postcode and meter details. We’ll show you options across the market, then you can filter by:
- Tariff type: fixed (12 / 18 / 24 months) vs variable
- Payment: monthly Direct Debit, pay on receipt, or prepayment
- Fuel: dual fuel vs electricity-only / gas-only
- Features: exit fees, green options, smart meter requirements
Tip: If you don’t know your annual usage, you can still compare. Use your latest bill (kWh) if you have it, or start with a typical usage estimate — then sense-check the unit rates and standing charges.
How to judge whether a fixed deal is “cheaper” after the cap drop
- 1) Compare the rates, not just the headline £/year
- Look at unit rate (p/kWh) for gas and electricity and the standing charge (p/day). The cap drop changes the benchmark, but your cost depends on both parts.
- 2) Check the tariff end date vs likely future cap changes
- If your fix runs through the next cap review, consider whether an exit fee could trap you on a higher price.
- 3) Confirm the meter type and payment method
- Quotes can change materially for prepayment, economy/dual-rate meters, and some smart meter modes. Always select what you actually have.
Two realistic scenarios (with numbers you can copy)
Scenario A: medium-use dual fuel on monthly Direct Debit
Assumptions (example only): 2–3 bed home, typical usage of 2,700 kWh electricity and 11,500 kWh gas per year; single-rate electricity meter; monthly Direct Debit.
| Item | Capped variable (illustrative) | Fixed deal (illustrative) |
|---|---|---|
| Electricity unit rate | 24.5p/kWh | 23.2p/kWh |
| Electricity standing charge | 55p/day | 52p/day |
| Gas unit rate | 6.2p/kWh | 6.0p/kWh |
| Gas standing charge | 31p/day | 30p/day |
| Estimated annual total | ~£1,255 | ~£1,196 |
What this means: A fix that’s modestly below the cap on both unit rates and standing charges could be ~£60/year cheaper for this household. If the exit fee is £75–£150, the “cheap” fix can become less attractive if you need to leave early.
Scenario B: electricity-only flat with low usage
Assumptions (example only): 1–2 bed flat, 1,800 kWh electricity per year; single-rate meter; monthly Direct Debit.
| Item | Capped variable (illustrative) | Fixed deal (illustrative) |
|---|---|---|
| Electricity unit rate | 24.5p/kWh | 22.8p/kWh |
| Electricity standing charge | 55p/day | 62p/day |
| Estimated annual total | ~£645 | ~£638 |
What this means: Even with a better unit rate, a higher standing charge can wipe out most of the benefit for low users. In this example the saving is only ~£7/year — often not worth a long fix or an exit fee.
Numbers note: The unit rates above are illustrative to show the maths. Your quote can be higher or lower depending on region (distribution network), tariff structure, and supplier.
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Fixed vs variable after a cap drop: quick comparison
Use this table to decide what “cheapest” means for you: the lowest cost today, or the lowest risk over the next year.
| What you’re comparing | Fixed tariff | Capped variable (SVT/default) | What to check before you choose |
|---|---|---|---|
| Price certainty | Unit rates usually fixed for the term (standing charge may be fixed too, depending on tariff). | Rates can change when the cap updates (and with other allowed changes). | Tariff end date, and whether you can leave without paying a fee. |
| Likelihood of being “cheaper” right now | Can be below the cap after a drop, but not always (varies by region and payment method). | Often acts as the benchmark; can be competitive after a cap drop. | Compare p/kWh and p/day side-by-side, not marketing claims. |
| Ability to benefit from future falls | You may miss future drops unless you switch again (exit fee may apply). | You benefit automatically when the cap reduces (subject to how suppliers update rates). | Exit fee amount and whether you’re likely to move home soon. |
| Eligibility | Some fixes exclude certain meters or require smart meters / online billing. | Default tariffs available broadly, including many prepayment customers. | Meter type (prepay/economy), online account requirements, Direct Debit. |
Decision checklist: who a fixed deal suits (and who it doesn’t)
A fixed deal may suit you if…
- You want predictability and prefer to budget around stable unit rates.
- You’ve found a fix that is meaningfully below the capped variable rate for your postcode.
- You expect to stay in the property for the tariff term.
- You’re comfortable with the exit fee (or there isn’t one).
- You can meet any requirements (e.g., monthly Direct Debit, online billing).
A fixed deal may not suit you if…
- You may move, change tenancy, or change meter type soon.
- The deal is only a few pounds a year cheaper once standing charges are included.
- The exit fee could cancel out potential savings if the cap falls again.
- You’re on (or may need) a prepayment set-up and options are limited.
- You need flexibility due to income changes or seasonal usage swings.
Costs, exclusions and common pitfalls (so you don’t get caught out)
Exit fees
Many fixed tariffs charge a fee if you leave early (sometimes per fuel). If another price cap drop happens, an exit fee can stop you switching to a cheaper rate.
Check: fee amount, whether it’s per fuel, and whether it applies in the final 49 days of the tariff.
Standing charges
A “cheap” fix on unit rates can still cost more overall if standing charges are higher — especially for flats and low users.
Check: electricity and gas standing charge p/day, and how that compares to your current tariff.
Payment method pricing
Direct Debit deals can price differently to pay-on-receipt, and prepayment tariffs can differ again.
Check: the quote is for the payment method you will actually use.
Smart meters & tariff eligibility
Some tariffs require a smart meter, or only work for smart meters in credit mode. If your smart meter is set to prepay mode, options may differ.
Check: eligibility rules and what happens if your meter changes mid-tariff.
Economy 7 / multi-rate complexity
If you have Economy 7 (or similar), you have day and night unit rates. A deal that’s “cheap” for single-rate might not be cheap for you.
Check: both unit rates, your night-usage share, and whether the tariff supports your meter type.
Intro offers and “bundled” extras
Occasionally a tariff looks cheap due to a credit/bonus, but ongoing rates may be higher. Focus on the underlying p/kWh and p/day.
Check: whether discounts are conditional, time-limited, or repayable.
If you’re in Northern Ireland: energy pricing and regulation differ from Great Britain’s Ofgem cap. You can still compare deals, but treat “price cap” headlines as GB-focused.
FAQs
Is it worth fixing after the price cap drops?
Sometimes. If you can fix at rates that are clearly below the capped variable rate for your region, a fix can be cheaper and easier to budget. If the difference is small, flexibility may be worth more than a modest saving.
Can I switch if I’m in credit or debit with my current supplier?
Usually yes. Suppliers can block a switch in some debt situations, especially for prepayment meters. If you’re in credit, your old supplier should refund you after the final bill (timings vary).
How long does switching take in the UK?
Switching is typically completed within a few working days for many customers, but it can take longer if there are meter issues or address mismatches. Your supply shouldn’t be interrupted.
Do fixed deals always have exit fees?
No. Some fixes have £0 exit fees, others charge per fuel. Always check the tariff information label or key terms before you commit.
Why is my friend’s “cheapest fix” not available for me?
Energy prices vary by region (distribution costs), meter type (single vs multi-rate, prepay), and payment method. Even within the same supplier, the “best” deal can differ between postcodes.
What if I’m renting — can I switch?
In most cases, yes, as long as you pay the bills and your tenancy agreement doesn’t include energy as part of the rent. If you’re on a landlord tariff or bills are included, you may not be able to switch.
Does the Ofgem price cap apply to fixed tariffs?
Generally, no. The cap applies to standard variable and default tariffs. Fixed tariffs are priced separately, so they can be above or below the capped variable level.
What details do I need to get an accurate quote?
Your postcode, whether you want gas/electricity or both, your meter type (including Economy 7 or prepay), and ideally your annual kWh usage from a recent bill. If you don’t have usage figures, you can still compare and then sense-check rates.
Trust, methodology and sources
Page ownership
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: May 2026
How we assess “cheapest fixed deal after a cap drop”
We do not publish a single “best tariff” headline because pricing depends on the household. Instead, this guide focuses on a transparent way to identify whether a fixed tariff is cheaper than the new capped variable benchmark.
- We compare unit rates (p/kWh) and standing charges (p/day) for your selected region, meter type and payment method.
- We use annual cost estimates to help you rank options, but we encourage checking the underlying rates because your usage can differ.
- We factor in key terms that change real-world value: exit fees, tariff length, eligibility requirements, and billing/payment rules.
- We highlight limitations: cap levels and supplier pricing change; some tariffs are time-limited; and address/meter data can affect availability.
Editorial note: Any “scenario” figures on this page are illustrative examples to explain the calculation. Treat your quote results as the source of truth and verify tariff terms before switching.
Reputable UK sources we use
- Ofgem: Energy price cap (what it is, who it applies to, how it changes)
- Citizens Advice: Energy supply and switching (consumer rights and practical switching guidance)
- GOV.UK: Energy bills support (official information on support schemes, where applicable)
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