Cheapest single rate electricity tariff UK this month
See what “cheapest” really means for your home, how to spot the lowest single-rate unit price, and compare whole-of-market options by postcode, meter type and payment method.
- Built for UK households on single-rate electricity (not Economy 7/10)
- Explains price cap context, standing charges, and eligibility checks
- Includes a practical checklist, comparison table, and worked examples
Prices vary by region, meter type and payment method. “Cheapest” in this guide means lowest estimated annual cost for a typical usage profile, not a guaranteed bill.
Fast answer: the cheapest single-rate tariff depends on your region, standing charge and usage
There isn’t one single electricity tariff that’s the cheapest for everyone in the UK. Suppliers set different unit rates (p/kWh) and standing charges (p/day) by region, and the cheapest option can change depending on how much electricity you use.
What “single rate” means: one unit price for electricity at all times of day (as opposed to Economy 7/10, which has day/night rates). If your meter is Economy 7 but you mostly use electricity in the day, a single-rate tariff may still be better — but you should compare carefully.
Key takeaway #1
Don’t choose on unit rate alone. A low p/kWh can be beaten by a higher standing charge, especially for low usage homes.
Key takeaway #2
Your cheapest tariff can differ by region (e.g., London vs North Scotland), meter type (smart vs traditional) and payment method (Direct Debit vs prepayment).
Key takeaway #3
“Cheapest this month” is best assessed using an estimated annual cost for your usage — and checking fees, discounts and tariff end dates.
You’ll see options matched to your meter type and region. No obligation.
Compare the cheapest single-rate electricity tariffs for your home
Tell us a few details and we’ll match you with whole-of-market single-rate electricity options (where available) for your area. We’ll always show costs as estimates based on the information you provide.
Before you start: If you’re on Economy 7/10, you can still compare, but your best choice depends on how much you use at night. If you have a smart meter, you may see more tariff types.
What you’ll need
- Your postcode (to price for your region and network costs)
- How you currently pay (Direct Debit, cash/cheque, prepayment)
- Rough annual usage in kWh (optional but improves accuracy)
How to spot the cheapest single-rate deal
- 1) Compare estimated annual cost
- This bakes in both the unit rate and the standing charge for your usage.
- 2) Check the standing charge
- High standing charges can wipe out a cheaper p/kWh if you use less electricity.
- 3) Look for restrictions
- Exit fees, fixed end dates, “online-only” conditions, and eligibility rules can matter more than a small price difference.
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How to compare the cheapest single-rate electricity tariff (UK)
If you want the cheapest deal for you this month, you’ll get a better answer by comparing tariffs using your postcode and usage — then sense-checking the tariff terms.
Step 1: Confirm your meter type
Single-rate electricity is typically right if you have a standard meter or you don’t heavily use night-time electricity. If you have Economy 7/10, compare both single-rate and multi-rate options before switching.
Step 2: Use estimated annual cost, not just the headline rate
Standing charges can be the deciding factor. Lower usage households often benefit more from a lower standing charge, even if the unit rate is slightly higher.
Step 3: Check payment method pricing
Direct Debit tariffs may price differently from prepayment or cash/cheque. If you can’t pay by Direct Debit, filter accordingly so you don’t compare unavailable prices.
Step 4: Read the conditions
Look for exit fees (fixed deals), how long the price is fixed, any discounts that can be removed (e.g., online billing), and whether the tariff is for smart meters only.
Price cap context: Ofgem’s price cap limits the maximum unit rate and standing charge suppliers can charge for default tariffs (like SVT) for a typical customer profile. It is not a cap on your total bill, and fixed deals can be priced differently. Always compare based on your own expected usage.
Single-rate tariff comparison: what to look at (and why)
Use this table as a quick filter before you switch. It’s designed for UK households comparing single-rate electricity tariffs.
| What you’re comparing | Why it matters | Best for | Watch-outs |
|---|---|---|---|
| Estimated annual cost | Combines unit rate + standing charge for your usage | Everyone (most reliable headline) | Only as accurate as your usage estimate |
| Unit rate (p/kWh) | Main driver of cost for high usage homes | Higher usage households | Can distract from high standing charge |
| Standing charge (p/day) | Fixed daily cost regardless of usage | Low usage homes, vacant properties | Low standing charge may come with higher unit rate |
| Fixed vs variable | Fixed gives price certainty for the term | Budgeting, peace of mind | Fixed deals can have exit fees; variable can rise |
| Eligibility (meter/payment) | Some tariffs require smart meter or Direct Debit | Customers who meet criteria | You may not be able to switch to that tariff |
Decision checklist: who a cheap single-rate tariff suits
- You use electricity mostly in the daytime (or evenly across the day)
- You want straightforward pricing (one unit rate)
- You’re on SVT and want to check if a fixed deal is currently competitive
- You’ve recently moved and need a better rate than a deemed/standard tariff
Who it might not suit (compare carefully)
- You have Economy 7/10 and a large share of night-time usage (e.g., storage heaters)
- You rely on prepayment and your options are more limited
- You plan to move soon and a fixed deal has exit fees
- You have a complex meter setup (e.g., multiple MPANs) that may need specialist handling
Two realistic scenarios (illustrative numbers)
These examples show why the “cheapest” tariff can differ by usage. Figures are illustrative only and exclude VAT changes; actual rates vary by region and supplier.
Scenario A: Low usage flat (1,800 kWh/year)
- Tariff 1: 24p/kWh + 60p/day
- Tariff 2: 26p/kWh + 45p/day
Estimated annual cost:
Tariff 1: (1,800×£0.24)=£432 + (365×£0.60)=£219 ? £651
Tariff 2: (1,800×£0.26)=£468 + (365×£0.45)=£164.25 ? £632.25
Even with a higher unit rate, Tariff 2 is cheaper because the standing charge is lower.
Scenario B: Family home (4,200 kWh/year)
- Tariff 1: 24p/kWh + 60p/day
- Tariff 2: 26p/kWh + 45p/day
Estimated annual cost:
Tariff 1: (4,200×£0.24)=£1,008 + £219 ? £1,227
Tariff 2: (4,200×£0.26)=£1,092 + £164.25 ? £1,256.25
At higher usage, the cheaper unit rate wins overall.
Assumptions: single-rate electricity only; standing charge applied for 365 days; no discounts; no exit fees; illustrative rates for explanation.
Costs, exclusions and common pitfalls (UK)
These are the main reasons people pick a tariff that looks cheap but doesn’t work out as expected.
Standing charge shock
If you use less electricity (or the property is empty), a high standing charge can dominate your bill. Always compare annual cost for your likely usage, not a “best unit rate”.
Exit fees and contract length
Fixed tariffs can have exit fees if you leave early. If you’re renting, moving, or unsure, check the fee and the end date before switching.
Payment method restrictions
Some of the cheapest prices assume monthly Direct Debit. Prepayment and cash/cheque options may be priced differently and availability can be narrower.
Meter compatibility
Some tariffs require a smart meter (or won’t accept certain meter configurations). If your switch needs a meter change, timings can vary.
Tenants: You can usually switch energy supplier if you pay the bills, but check your tenancy agreement for any process requirements. If you’re on a prepayment meter, switching can still be possible, but it may be more limited.
Quick “don’t get caught out” checks
- Is the tariff single-rate (one unit price) rather than multi-rate?
- Is the price fixed — and if so, for how long?
- Any exit fees, and do they apply if you move home?
- Does the quote assume Direct Debit or paperless billing?
- Are prices shown for your exact region and meter type?
FAQs: cheapest single-rate electricity tariffs (UK)
Is the “cheapest tariff this month” the same across the UK?
No. Electricity prices vary by region due to network costs and supplier pricing, and can also vary by payment method and meter type. The cheapest tariff for a London postcode may not be cheapest in the North West or Scotland.
What’s more important: unit rate or standing charge?
It depends on usage. High usage homes are more sensitive to unit rate; low usage homes are often more affected by standing charge. That’s why comparing estimated annual cost is usually the most practical approach.
Can I switch from Economy 7 to a single-rate tariff?
Often, yes — but you may need a meter reconfiguration depending on your setup. If you use storage heaters or do a lot of night-time electricity use, a single-rate tariff may cost more overall. Compare both before deciding.
Will a fixed tariff always be cheaper than a standard variable tariff?
Not always. A fixed tariff can be cheaper or more expensive than a standard variable tariff depending on current market pricing. Fixed deals can offer budgeting certainty, but may include exit fees.
How quickly can I switch electricity suppliers in the UK?
Switching times can vary by supplier and circumstances (for example, meter types or data issues). Your new supplier should keep you updated, and you’ll still have energy during the switch.
Do I need a smart meter to get the cheapest single-rate tariff?
Not necessarily. Many tariffs are available without a smart meter, but some newer deals are smart-meter-only. Having a smart meter can also make meter readings easier and may open up more tariff types.
I’m a tenant — can I switch to a cheaper tariff?
In many cases, yes, if you’re responsible for paying the energy bills. If you’re on a prepayment meter, switching can still be possible, but options may be more limited. It’s sensible to keep your landlord informed if any meter work is required.
What happens if I switch and then prices fall?
If you’re on a variable tariff, your rates can change over time. If you’re on a fixed tariff, your unit rate and standing charge are typically fixed for the term (subject to contract terms), and leaving early may trigger an exit fee. Consider flexibility versus certainty.
Trust, methodology and sources
Editorial accountability
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: April 2026
How we assess “cheapest single-rate tariff”
In this guide, “cheapest” refers to the lowest estimated annual electricity cost for a single-rate tariff, calculated from:
- Unit rate (p/kWh) × estimated annual consumption (kWh)
- Standing charge (p/day) × 365
We also consider practical suitability: meter type requirements, payment method, tariff term length, exit fees, and any eligibility constraints that could make an offer unavailable for some households.
Limitations: Energy pricing is regional and changes over time. Supplier acceptance (including credit checks), meter compatibility, and your actual usage can change the outcome. Any figures shown on this page are educational examples unless presented to you as a personalised quote.
Sources (UK)
- Ofgem: Energy price cap (how the cap works and what it covers)
- Citizens Advice: Energy supply and switching (consumer rights and switching guidance)
- GOV.UK: Switch energy supplier (official overview of the switching process)
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