Best energy tariffs for new customers (UK, May 2026)
A UK-focused guide to the best tariff types for new customers right now, how to compare them safely, and what to check before you switch.
- Updated guidance on fixed vs variable vs tracker tariffs (and when each makes sense)
- What “best” means in practice: price, risk, exit fees, meter type and payment method
- Transparent methodology, examples with numbers, and a quick quote form
Prices and availability vary by postcode, meter type and payment method. This guide is for domestic customers in Great Britain (not business energy).
Fast answer: what are the best tariffs for new customers in May 2026?
There isn’t one single “best” tariff for everyone because prices and eligibility change by postcode, meter type (standard or smart / Economy 7), and payment method (Direct Debit, prepayment, receipt of bill). In May 2026, the best options for many new customers tend to fall into these categories:
Best for certainty
A fixed tariff (often 12 months) if the price is competitive and the exit fees are acceptable for you.
Best for flexibility
A no-exit-fee variable tariff if you want the freedom to switch again quickly.
Best for engaged users
A tracker tariff can be good value when rates are falling, but it can rise quickly—so it suits people who keep an eye on prices.
Important: “New customer” deals can exclude existing customers, require Direct Debit, and may have exit fees. Always compare the unit rates (p/kWh), standing charges (p/day), contract length and any fees—then check if your meter type is supported.
Key takeaways (quick read)
- Cheapest headline price isn’t always best: standing charges, exit fees and payment method can change the real cost.
- Fixed tariffs offer budget certainty; variable offers switching flexibility; tracker can win or lose depending on market movement.
- Smart meters & Economy 7 can limit options—filter comparisons to your setup.
- Switching is usually straightforward in Great Britain and should not interrupt supply (your energy still comes through the same pipes and wires).
Compare whole-of-market tariffs (built around your home)
Tell us your postcode and a few details and we’ll match you with tariffs that fit your meter and payment preferences. You’ll see the unit rate, standing charge, key contract terms and any exit fees so you can make a fair comparison.
What you’ll need (2 minutes)
- Your postcode (prices vary by region and network costs)
- Whether you pay by Direct Debit, on receipt of bill, or prepayment
- Your meter type (standard, smart, Economy 7, or prepay)
- If you know it: annual usage in kWh from a recent bill (optional but improves accuracy)
Two realistic examples (estimated)
Scenario A: 2‑bed flat, low/medium use
Assumptions: Standard meter, Direct Debit, England; annual use 2,700 kWh electricity + 11,500 kWh gas.
Illustration: If a fixed tariff is 2p/kWh lower than a variable on electricity and 1p/kWh lower on gas, the usage-only difference could be about £169/year (2,700×£0.02 + 11,500×£0.01). Standing charges and fees can reduce or increase this—so compare the full quote.
Scenario B: 4‑bed house, higher use
Assumptions: Smart meter, Direct Debit, Wales; annual use 4,200 kWh electricity + 17,000 kWh gas.
Illustration: The same rate differences (2p/1p) would be about £254/year (4,200×£0.02 + 17,000×£0.01). But if the fixed tariff has £100 exit fees and you switch early, that advantage could shrink quickly.
Why we show examples like this: Energy costs = (unit rate × usage) + standing charge. Small p/kWh changes matter more for higher-usage homes. Your exact rates depend on region, meter type and tariff availability.
Get a tailored quote
We use your details to find tariffs available for your home. We’ll only contact you about your quote.
New to switching?
In Great Britain, your energy supply won’t be interrupted when you change supplier. You usually keep the same meter and cables; only the billing company changes.
Tariff comparison: what’s typically “best” for new customers?
Use this table to decide which type of tariff to target first. Then compare the actual offers available at your postcode (unit rates, standing charges, fees and contract terms).
| Tariff type | Best for | Watch-outs | What to check before choosing |
|---|---|---|---|
| Fixed (often 12–24 months) | People who want predictable bills and are happy to stay put. | Exit fees if you leave early; some deals are Direct Debit only. | Exit fees, contract length, whether it’s a true fix or “fixed discount”, and any price promise wording. |
| Variable (no end date) | Flexibility: you can switch again quickly if a better offer appears. | Rates can rise; some are linked to or sit around the Price Cap. | How often rates can change, notice periods, and how your supplier communicates changes. |
| Tracker (linked to a benchmark) | People comfortable with price movement who want potential upside if rates fall. | Can rise quickly; may have caps/floors; not ideal if you need a fixed monthly budget. | The benchmark used, update frequency, any cap, and whether exit fees apply. |
| Time-of-use (smart meter tariffs) | Households able to shift usage (e.g. EV charging, appliances overnight). | Peak rates can be high; not everyone can move consumption. | Peak/off-peak windows, your typical usage pattern, and whether you can automate/shift load. |
Decision checklist: who each option suits (and who it doesn’t)
A fixed tariff is more likely to suit you if…
- You want stable rates and less worry about price changes.
- You expect to stay at the property for the contract length.
- You can accept exit fees (or there are none).
Less suitable if: you might move soon, you’re likely to switch again quickly, or you’d struggle to pay an exit fee if needed.
A variable or tracker is more likely to suit you if…
- You prioritise flexibility and want to switch without penalties.
- You can cope if rates rise (tracker/variable risk).
- You’re willing to review your tariff a few times a year.
Less suitable if: your budget is tight and you need predictable monthly costs.
Tip for new customers: if you’re unsure, compare a competitive fix and a no-exit-fee variable side by side. That gives you a clear trade-off between certainty and flexibility.
Costs, exclusions and common pitfalls (UK-specific)
These are the issues that most often trip up new customers when searching for the “best” energy tariff.
Standing charges
A tariff can look cheap per kWh but still cost more overall if the standing charge is higher. This matters most for low-usage homes.
Payment method rules
Some “new customer” tariffs are Direct Debit only. Prepayment and pay-on-receipt tariffs often have different prices and fewer options.
Meter type limitations
Economy 7, smart meters and some prepay setups can restrict which tariffs you can join. Always filter to your exact meter.
Exit fees and moving home
Fixed deals may charge exit fees if you leave early. Some suppliers waive fees if you move and take the tariff with you, but it depends on their terms.
Before you fix: if your tenancy might end soon, consider a no-exit-fee option or a shorter fix.
Discounts, rewards and “bundle” offers
Perks (vouchers, boiler cover add-ons, app rewards) can be useful, but they can also distract from the core price. Evaluate the tariff on rates and fees first.
Reality check: a small reward rarely outweighs a higher unit rate over a year, especially for higher-usage households.
Common mistakes to avoid
- Comparing quotes without matching payment method (Direct Debit vs other).
- Ignoring the standing charge, especially for low-usage flats.
- Choosing Economy 7 when you don’t use enough electricity overnight (or vice versa).
- Forgetting to check exit fees and your likely moving/switching timeline.
- Assuming a tariff is available everywhere—many offers are region-specific.
FAQs: best tariffs for new customers (UK)
What does “new customer tariff” mean?
It typically means a tariff only available if you’re not currently supplied by that supplier (and sometimes if you haven’t been with them for a set period). Eligibility rules vary by supplier and can change, so always check the tariff’s terms before starting a switch.
Is the cheapest tariff always best?
Not always. The “best” tariff depends on how you weigh price vs certainty vs flexibility. A slightly higher-priced no-exit-fee tariff can be better if you plan to switch again soon, while a competitive fix can be better if you want predictable costs.
Do I need a smart meter to get the best deals?
No. Many standard tariffs are available with or without a smart meter. However, time-of-use tariffs (with different peak/off-peak prices) usually require a smart meter, and can be beneficial if you can shift usage (for example, EV charging overnight).
What if I’m on a prepayment meter?
You can still switch, but the range of tariffs may be smaller and prices can differ from Direct Debit tariffs. Some suppliers require you to move to Direct Debit for certain deals. If you’re repaying a debt through your meter, you may have extra steps to follow when switching.
How long does switching take in Great Britain?
Switching times can vary. In many cases it’s completed within a few working days, but it can take longer depending on your circumstances (for example, meter or address issues). Your supply shouldn’t be interrupted during the switch.
Can I switch if I rent (tenant) rather than own the home?
Usually yes—if you pay the energy bills and your tenancy agreement allows you to choose the supplier. If bills are included in rent or the landlord controls the supply, you may not be able to switch. If you’re unsure, check your tenancy agreement first.
Will my Direct Debit change when I switch?
It can. Suppliers set Direct Debits based on expected annual usage and may adjust after reviewing meter readings. A good practice is to submit up-to-date meter readings (or ensure smart readings are accurate) when you start a switch.
What’s the difference between unit rate and standing charge?
The unit rate is what you pay per kWh of energy you use. The standing charge is a daily cost to cover fixed costs like maintaining the network and metering. Your total bill combines both (plus VAT).
Trust, methodology and sources
How EnergyPlus assesses the “best” tariffs for new customers
- 1) Availability for new customers
- We prioritise tariffs marketed to new customers and widely available across regions, while flagging postcode or meter restrictions.
- 2) Total estimated cost, not just headline rates
- We compare unit rates and standing charges together, because both drive the annual cost. Where a supplier provides an estimated annual cost, we treat it as a helpful reference, not a guarantee.
- 3) Contract terms that affect real-life value
- We consider exit fees, contract length, payment method requirements, and whether prices can change (variable/tracker mechanics).
- 4) Suitability for common UK households
- We include guidance for renters, prepayment customers, Economy 7 homes and smart meter users, because “best” varies sharply across these groups.
Limitations and assumptions (important)
- Estimates only: example numbers on this page illustrate how p/kWh differences can add up. Your bill depends on your actual usage, regional rates, and standing charges.
- Great Britain focus: domestic energy regulation and switching rules differ in Northern Ireland, so this guide is written for England, Scotland and Wales.
- Market movement: suppliers can withdraw or change tariffs quickly. Always confirm the full terms at the point you apply.
Sources (UK)
- Ofgem (Great Britain energy regulator) — guidance on energy switching, consumer protections and market rules.
- Citizens Advice: Energy — practical help if you’re struggling with bills or supplier issues.
- GOV.UK — general guidance on consumer rights and support schemes (where applicable).
Ready to find the best new customer tariff for your home?
Get a postcode-specific comparison with unit rates, standing charges and key contract terms—so you can choose based on the full picture, not a headline.
Final switching checklist
- Confirm your meter type (standard, smart, Economy 7, prepay).
- Match the quote to your payment method (Direct Debit vs other).
- Compare unit rate + standing charge together.
- Check exit fees and contract length against your likely timeline.
- Submit up-to-date meter readings if asked.
No guarantees—quotes are estimated and depend on your details, eligibility and supplier availability at the time you apply.
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