Cheapest energy tariff for an electric blanket in the UK

Electric blankets are low-cost to run — so the “cheapest tariff” is usually the one that fits your meter and payment type, not a special blanket-only deal. Use this guide to estimate your blanket cost, then compare whole-of-market tariffs that suit your home.

  • See typical electric blanket running costs (with UK unit rates)
  • Find which tariff types can genuinely reduce costs (and when they won’t)
  • Compare tariffs by meter type: standard, smart, Economy 7/10, prepay
Get your energy quote Check blanket costs first

Estimates only. Your tariff availability depends on your postcode, meter type, payment method and supplier criteria. Always check tariff T&Cs and exit fees.

Fast answer: what’s the cheapest energy tariff for an electric blanket?

For most UK homes, the cheapest option for running an electric blanket is simply the lowest overall electricity unit rate available for your meter type and payment method (direct debit, prepay, smart tariff, Economy 7/10). There isn’t a dedicated “electric blanket tariff”.

Key point: Electric blankets typically use low power (often ~50–150W). That means your blanket cost is usually pennies per night, and the biggest bill differences come from your whole household usage, standing charge, and whether you can benefit from off-peak rates.

Typical running cost (example)

If your blanket averages 100W and you use it for 2 hours:

0.1 kW × 2h = 0.2 kWh per night.

At an example unit rate of £0.28/kWh, that’s about 6p per night (0.2 × 28p).

Your blanket’s label/manual should show wattage. Some blankets cycle on/off, so real use can be lower than “max wattage”.

Key takeaways (quick)

  • Standard single-rate tariff: simplest; often best if most use is daytime/evening.
  • Economy 7/10: only helps if you can shift a meaningful chunk of electricity into off-peak (blanket use alone is usually too small).
  • Smart time-of-use tariffs: can be cheaper if you’re comfortable shifting usage (e.g., EV charging, appliances). Blanket-only savings are usually modest.
  • Standing charge matters: low-usage homes can be hit by high daily charges even with cheap unit rates.

Best “tariff type” by situation

You only use a blanket at night
Choose the cheapest overall tariff for your household. Don’t switch meters just for the blanket.
You already have Economy 7/10 (storage heaters)
Use the blanket during off-peak if possible. Compare E7 tariffs carefully (day rate can be higher).
You have (or can get) a smart meter
Consider time-of-use tariffs if you can shift other big loads too (not just the blanket).

Compare tariffs properly (blanket + whole home)

Because an electric blanket typically uses a small amount of electricity, the “cheapest” tariff is the one that reduces your total annual cost once you include:

  • Unit rate(s) (single rate or day/night split)
  • Standing charge (p/day)
  • Payment method (direct debit vs prepay)
  • Meter type (standard, smart, Economy 7/10, prepay)
  • Tariff rules (exit fees, price guarantees, discounts)

Tip: If your only goal is cheaper blanket running costs, switching to a specialist off-peak tariff is rarely worth it. It can raise your day rate and increase total cost unless you shift lots of electricity use to off-peak.

Two realistic scenarios (with numbers)

Scenario A: standard tariff, 2 hours nightly

  • Blanket: 100W average
  • Usage: 2 hours/night
  • Energy: 0.2 kWh/night
  • Example unit rate: 28p/kWh

Estimated cost: 0.2 × £0.28 = £0.056 (~6p) per night, or about £1.70 for 30 nights.

If your blanket is 150W or used longer, multiply accordingly.

Scenario B: Economy 7 off-peak, 8 hours overnight

  • Blanket: 100W average
  • Usage: 8 hours/night (overnight)
  • Energy: 0.8 kWh/night
  • Example night rate: 16p/kWh
  • Example day rate: 33p/kWh (often higher than standard)

Estimated blanket cost overnight: 0.8 × £0.16 = £0.128 (~13p) per night.

Economy 7 can reduce overnight costs, but your overall bill can rise if most electricity is used in the day at the higher rate.

Simple formula you can use

Cost (pence) ≈ (Watts ÷ 1000) × Hours used × Unit rate (p/kWh)

Example: 120W for 3 hours at 30p/kWh → (0.12 × 3 × 30) = 10.8p.

Get a personalised tariff comparison

Tell us a few details and we’ll help you compare whole-of-market home energy tariffs available in your area. We’ll focus on options that suit your meter and payment method — so your blanket (and everything else) is covered.

Start your comparison

By submitting, you confirm this is for a UK home energy comparison. We’ll use your details to provide quotes and contact you about your comparison. You can opt out at any time.

What we’ll consider: your meter type (standard/smart/Economy 7/prepay), tariff availability in your region, unit rates, standing charges, and any exit fees where shown by suppliers.

Tariff types compared (what works best for an electric blanket)

Use this as a practical guide. The “best” tariff depends on your wider electricity pattern (cooking, showers, tumble dryer, EV, home working) and your meter.

Tariff type When it can be cheapest Key watch-outs Blanket impact
Single-rate (standard) Most homes, especially if usage is spread through the day/evening Compare both unit rate and standing charge; check exit fees on fixed deals Simple: blanket cost just tracks the unit rate
Fixed-rate deal When you want price certainty for a set term (e.g., 12 months) Exit fees may apply; renewal can jump if you don’t shop around Good for predictable blanket costs; savings depend on overall rates
Variable (including SVT) When you need flexibility (no exit fees) and prefer simple switching Rates can change; may not be the lowest long-term option Blanket costs can rise/fall with rate changes
Economy 7 / Economy 10 If you can run a meaningful share of electricity off-peak (e.g., storage heating) Day rate is often higher; off-peak hours vary by region/meter; not always easy to compare Can reduce overnight blanket cost, but blanket use alone rarely justifies E7
Smart time-of-use If you can shift big loads to cheap windows (EV, washing, heating controls) Requires smart meter; peak rates can be high; rules differ by supplier Useful if blanket use aligns with cheap periods, but overall savings usually come from bigger loads
Prepayment When prepay is required/preferred; some households find budgeting easier Historically can be pricier; topping-up and emergency credit rules apply; switching can be more limited Blanket cost depends on your unit rate; focus on reducing total tariff cost

Decision checklist: who it suits (and who it doesn’t)

This approach suits you if…

  • You want the cheapest realistic option for your whole home, not just one appliance
  • You know your meter type (or can check a recent bill)
  • You can compare standing charge + unit rate together
  • You’re open to fixed or variable tariffs depending on risk preference

It may not suit you if…

  • You’re considering changing to Economy 7 only to run a blanket cheaper
  • You can’t shift other electricity use to off-peak windows
  • You’re in a complex setup (e.g., multiple meters, restricted meters, heat networks)
  • You need support with debt/repayment plans (tariff options can be limited)

If you’re unsure of your meter type: check your bill for “Economy 7”, “E7”, “day/night”, or two unit rates. A smart meter doesn’t automatically mean you’re on a time-of-use tariff.

Costs, exclusions and common pitfalls (UK)

These are the issues that most often stop people getting the “cheapest” outcome in practice.

1) Standing charge dominates low usage

If you use very little electricity overall, a low unit rate may not help much. Compare the daily standing charge carefully, especially if you’re a low-user household (e.g., small flat, away often).

2) Economy 7 can backfire

Economy 7/10 can be great for storage heating, but if most of your electricity is daytime/evening, the higher day rate can outweigh off-peak savings. A blanket is usually too small a load to justify switching.

3) Time-of-use peak prices

Some smart tariffs have very cheap windows but higher peak rates. If your main usage is during peak times, total costs can rise.

4) Exit fees on fixed deals

Fixed tariffs may include exit fees. If you might move home or switch again soon, check the T&Cs so a “cheap” deal doesn’t become expensive to leave.

5) Prepay availability and rules

Prepay tariffs can have different pricing and fewer switching options. If you’re repaying debt through the meter, you may have constraints that affect eligibility.

6) Safety and usage assumptions

Running costs depend on actual wattage and cycling. Always follow manufacturer guidance for safe use (especially overnight) and check for damage, recalls, or age-related wear.

Important: This guide is about costs and tariffs, not medical or safety advice. If you have health concerns or need help keeping warm at home, see the UK support links in the sources section.

FAQs

Is it cheaper to use an electric blanket than central heating?

Often, yes — because an electric blanket heats you rather than the whole room. But it depends on your heating system, insulation, thermostat settings and the electricity unit rate you pay. Treat any comparison as estimated.

Will a smart tariff make my electric blanket cheaper?

Only if your blanket use lines up with cheaper time periods and the rest of your electricity use doesn’t become more expensive at peak times. For many households, the bigger savings (or losses) come from other appliances.

Do I need Economy 7 to run an electric blanket cheaply?

Usually no. Economy 7 is best when you can move a large share of usage overnight (e.g., storage heaters). Switching meters/tariffs just for a blanket is rarely cost-effective.

How do I find my electric blanket’s wattage?

Check the label on the controller, the fabric label, the plug label, or the instruction manual. Look for “W” (watts). If it lists a range (e.g., 50–120W), use the higher number for a cautious estimate.

Does payment method affect which tariffs I can get?

Yes. Many suppliers price differently for monthly direct debit vs prepayment. Your eligibility can also depend on meter type and credit checks. We recommend comparing on the same payment method you plan to use.

Can I switch energy supplier if I rent?

Often, yes — you typically can choose your supplier if you pay the bills. But check your tenancy agreement and make sure you don’t leave the landlord’s account in debt. If bills are included in rent, you usually can’t switch.

Do standing charges vary by region?

Yes. Electricity (and gas) standing charges and unit rates can vary by region due to network costs and other factors. That’s why postcode matters when comparing tariffs.

What if I’m struggling to pay my energy bills?

If you’re in difficulty, contact your supplier as early as possible to discuss payment plans and support. You can also get free, independent help from Citizens Advice and Ofgem’s guidance (links below).

Trust, methodology and sources

Page governance

We update this guide when UK tariff structures, market conditions, or regulator guidance change.

How we assess “cheapest” for electric blanket use

We treat “cheapest” as the tariff that is likely to reduce your total electricity cost given your household constraints — because suppliers don’t price “electric blanket-only” usage separately.

What we consider:

  • Tariff structure: single-rate vs multi-rate (Economy 7/10, time-of-use)
  • Standing charge: impacts low-usage households disproportionately
  • Eligibility constraints: meter type (incl. smart), payment method, credit checks, region
  • Flexibility: fixed vs variable, exit fees, contract length

Limitations and assumptions: The example costs on this page use assumed unit rates and a typical electric blanket wattage. Your real costs depend on your tariff, how your blanket cycles heat, room temperature, and your usage pattern. Always check your current bill and the tariff’s unit rates/standing charge for your region.

Sources and further UK guidance

Links provided for independent guidance. EnergyPlus is a comparison service; availability and prices vary by supplier and customer eligibility.

Ready to find a cheaper tariff for your home?

Electric blanket costs are usually small — the real win is choosing the best-value tariff for your meter, payment method and postcode.

Get your energy quote Recheck tariff types

Back to Guides & FAQs



Updated on 15 May 2026