Cheapest rolling electricity tariff in the UK (no fixed end date)
Find an estimated cheap monthly (rolling) electricity deal for your home—based on your postcode, meter and payment method—then compare it against the Ofgem price cap.
- Rolling tariffs can be cheaper than the Standard Variable Tariff (SVT), but prices can change with notice.
- “Cheapest” depends on your region, meter type (single-rate vs Economy 7), and how you pay.
- We show what to check (standing charge, unit rate, fees) before you switch.
Estimates only. Tariff availability and rates vary by region, meter type and supplier terms. We compare across the market we can access.
Fast answer: what’s the cheapest rolling electricity tariff?
There isn’t one single “cheapest rolling tariff” for everyone in the UK. On rolling (open-ended) contracts, the cheapest option depends mainly on:
Your region
Standing charges and unit rates vary across the 14 electricity distribution regions.
Your meter & usage pattern
Single-rate vs Economy 7 can change what “cheapest” looks like for you.
How you pay
Direct Debit is usually cheaper than pay-as-you-go / prepayment, but not always.
Rule of thumb: if you’re on an SVT, a competitive rolling tariff can sometimes beat it on unit rate and/or standing charge, but your price can change—so always check the tariff’s price-change terms and compare the estimated annual cost for your usage.
Key takeaways (before you switch)
- Compare on total cost (unit rate + standing charge), not just the headline p/kWh.
- Check whether it’s “no exit fee” and if any discounts are conditional (e.g. paperless billing).
- Rolling doesn’t mean fixed: suppliers can change prices with notice (read the tariff info).
- Economy 7 users: the cheapest daytime rate may not be cheapest overall—night rate matters.
- Prepayment: options can be narrower; confirm meter compatibility before switching.
Compare rolling electricity tariffs for your home
A rolling contract (sometimes called a variable or monthly tariff) can suit you if you want flexibility—without committing to a long fixed deal.
What you’ll need
- Postcode (sets your region)
- How you pay today (e.g. Direct Debit)
- Electricity-only or dual fuel
- Optional: annual kWh from a bill
What we’ll show you
- Estimated annual cost
- Unit rate(s) and standing charge
- Exit fees (if any)
- Payment method and meter compatibility
Good to know: “whole-of-market” comparisons can still have limitations (some suppliers/tariffs may not be available via every comparison service). We explain our approach in Methodology & sources.
How rolling electricity contracts work (UK)
1) No fixed end date
A rolling tariff continues until you switch away. You’re not locked in for 12–24 months like a fixed tariff.
2) Prices can change
The supplier can increase (or reduce) unit rates and standing charges with notice. Your bill changes even if your usage doesn’t.
3) Usually flexible to leave
Many rolling tariffs have no exit fees, but always confirm—some deals can still include charges or conditions.
4) Switching is normally seamless
For most households, your supply stays on. Your new supplier takes over billing after the switch completes.
Important: if you’re in a fixed term, you may pay an exit fee for leaving early (unless you’re within your supplier’s permitted window). Check your latest bill or online account before switching.
Get a rolling tariff comparison
Tell us a few details and we’ll match you with available rolling electricity options for your postcode.
When a rolling tariff tends to suit you
- You may move home soon (renters, short tenancies).
- You want the option to switch again quickly if prices fall.
- You’re currently on an SVT and want to compare flexible alternatives.
When it may not
- You prefer certainty and stable monthly costs.
- You’re on a very competitive fixed deal with no need to move.
- You’d struggle if prices increased (consider fixed or budgeting support).
Rolling vs fixed vs SVT: what’s usually cheaper?
“Cheapest” is always personal to your home. This table is designed to help you decide which type of tariff to focus on when you compare.
| Tariff type | Price changes | Exit fees | Best for | Watch-outs |
|---|---|---|---|---|
| Rolling (variable / monthly) | Supplier can change prices with notice | Often none (but check) | Flexibility, moving home, switching again soon | Higher risk of bill increases; check standing charge |
| Fixed | Unit rates/standing charge fixed for a term (subject to T&Cs) | Common (leaving early may cost) | Budgeting certainty, risk-averse households | If market prices fall, you may be stuck or pay to leave |
| SVT (standard variable) | Changes with supplier updates; SVT prices are constrained by the Ofgem cap level | Usually none | Default option if you haven’t chosen a deal | Often not the most competitive; you can usually do better by comparing |
Decision checklist: is a rolling tariff likely to be your cheapest option?
- You can switch again quickly if rates rise (and you’re comfortable doing so).
- Your tariff has no exit fees (or you’re comfortable with them).
- You’ve checked the standing charge—a low unit rate can be offset by a high daily charge.
- Your payment method matches the cheapest quote (Direct Debit vs prepayment).
- Your meter type matches (single-rate vs Economy 7; smart meter requirements where relevant).
Two realistic scenarios (with numbers)
These examples show how “cheapest” can change. They are illustrative estimates (rates vary by region and supplier).
- Scenario A: Single-rate, Direct Debit (typical small household)
- Assumptions: 2,400 kWh/year. Rolling quote uses 24.0p/kWh + 55p/day standing charge. SVT example uses 25.0p/kWh + 60p/day.
- Estimated annual cost: Rolling ≈ (2,400×£0.24) + (365×£0.55) = £576 + £200.75 = £776.75. SVT ≈ (2,400×£0.25) + (365×£0.60) = £600 + £219.00 = £819.00.
- Difference ≈ £42/year (estimate). If the rolling rate increases later, the gap can shrink or reverse.
- Scenario B: Economy 7, higher night usage (storage heating)
- Assumptions: 4,500 kWh/year with 60% night / 40% day. Rolling E7 quote: 30.0p/kWh day, 14.0p/kWh night, 55p/day. Alternative tariff: 28.0p day, 16.5p night, 60p/day.
- Estimated annual cost: Rolling ≈ (1,800×£0.30) + (2,700×£0.14) + (365×£0.55) = £540 + £378 + £200.75 = £1,118.75. Alternative ≈ (1,800×£0.28) + (2,700×£0.165) + (365×£0.60) = £504 + £445.50 + £219 = £1,168.50.
- Even with a cheaper day rate, a higher night rate can cost more if you use lots off-peak.
Tip: Use annual kWh from your latest bill (or online account) for the most accurate comparison, especially for Economy 7.
Costs, exclusions and common pitfalls (rolling tariffs)
Rolling tariffs can be excellent value, but the detail matters. Here are the most common reasons a “cheap” quote ends up disappointing.
Standing charge surprises
Some tariffs advertise a lower unit rate but have a higher daily standing charge. If you’re a low user (small flat, single occupant), this can wipe out savings.
Payment method & eligibility
The cheapest quotes often assume monthly Direct Debit and paperless billing. If you need to pay on receipt of bill or use prepayment, available tariffs and prices may differ.
Meter type mismatch
Economy 7 users should compare using day/night rates. A single-rate “cheap” tariff can cost more if you rely on off-peak electricity.
Introductory prices
Check whether the quote includes a short-term discount (e.g. for the first few months). Confirm what happens after the introductory period.
Exit fees (yes, sometimes)
Rolling contracts often have no exit fees, but not always. Always check the tariff information label or supplier terms before you apply.
Price changes & notice periods
Your supplier must give notice of changes, but the exact notice and your options (including switching away) depend on the contract. Read the key terms.
If you’re in debt to your current supplier: you may still be able to switch, but there can be restrictions depending on the type/amount of debt and meter type. If you’re unsure, check guidance from Citizens Advice and ask your supplier what options you have.
FAQs: cheapest rolling electricity tariffs (UK)
Is a rolling tariff the same as a standard variable tariff (SVT)?
Not always. SVT is typically the supplier’s default variable tariff. A “rolling” or “variable” deal can be a separate tariff with different rates from the SVT. Both can change price, so compare the estimated annual cost and the unit rate/standing charge.
Can I get the cheapest rolling electricity tariff if I rent?
Usually, yes—if you pay the energy bills and your tenancy allows you to choose the supplier. If bills are included in rent or the landlord controls the account, you may not be able to switch. Check your tenancy agreement and who the named account holder is.
Do rolling tariffs have exit fees?
Many don’t, but you should never assume. Check the tariff’s key information (or supplier terms) for exit fees, minimum terms, and any conditions that could trigger a charge.
Does the Ofgem price cap mean I’ll always be on the cheapest rate?
No. The price cap limits the level of charges on certain default tariffs (including many SVTs) for a “typical” customer, but it isn’t a guarantee you’re on the best deal. Many households can still find a cheaper tariff by comparing—especially if they can pay by Direct Debit and have a compatible meter.
How quickly can prices change on a rolling tariff?
It depends on the supplier and tariff terms. Variable tariffs can change with notice. If you’re choosing rolling for “cheap now”, make sure you’re also comfortable with how increases are handled and how easily you can switch away.
I have a smart meter—does that unlock cheaper rolling tariffs?
A smart meter can make billing more accurate (automatic readings), and it may make it easier to access some tariffs. But it doesn’t automatically mean cheaper prices. Always compare on total estimated cost.
Will switching interrupt my electricity supply?
In normal circumstances, no. Switching supplier is an admin/billing change—your physical supply stays on. If anything unusual applies (e.g. complex meter setup), the supplier will tell you during the process.
What if I’m on a prepayment meter—can I still find a cheap rolling tariff?
Possibly, but choice can be narrower and pricing can differ from Direct Debit tariffs. When comparing, select prepayment so quotes reflect compatible options. If you want to move away from prepay, ask your supplier what’s required (it can depend on credit checks and meter type).
Trust, methodology and sources
Page governance
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: May 2026
How we assess “cheapest”
We focus on the estimated annual cost for your home, rather than a single headline rate. Our comparisons use:
- Postcode/region (electricity distribution area affects charges)
- Meter type (single-rate or multi-rate like Economy 7)
- Payment method (Direct Debit, receipt of bill, prepayment)
- Usage assumptions when exact kWh isn’t provided (you can improve accuracy by entering your annual kWh)
Limitations & transparency
- Tariffs can change or be withdrawn quickly; quotes are time-sensitive.
- Some tariffs/suppliers may not be available via all comparison services.
- Eligibility can depend on meter type, credit checks, and supplier acceptance.
- Estimates exclude non-tariff factors such as arrears repayment plans.
Why you might see different “cheapest” results elsewhere: different sites can use different usage assumptions, include/exclude certain suppliers, or prioritise tariffs in different ways. If you have your annual kWh and meter type, you’ll get more consistent comparisons.
Sources (UK)
Ready to check the cheapest rolling electricity tariff for your postcode?
Compare flexible options, see estimated annual costs, and check key terms like standing charge and exit fees before you switch.
Note: the secondary button is a simple page link. Tariff results depend on availability and your details.
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