Cheapest electricity tariff for an electric blanket (UK)
Find the cheapest tariff type for running an electric blanket in the UK, with realistic cost examples, UK meter considerations, and a simple way to compare deals for your home.
- Typical running costs are low, so tariff choice matters most if you use electric heating a lot elsewhere
- Most homes are best on a competitive single‑rate tariff (or a smart time‑of‑use tariff if you can shift usage)
- We explain Economy 7, smart meters, payment methods, standing charges and exit fees
Estimates only. Exact costs depend on your tariff (unit rate + standing charge), meter type, region, and how long you use the blanket.
Fast answer: what’s the cheapest tariff for an electric blanket?
For most UK homes, the cheapest practical option to run an electric blanket is usually a competitive single‑rate electricity tariff (standard variable or fixed) with a low unit rate and a sensible standing charge for your region.
Why: an electric blanket uses relatively little electricity compared with electric heaters. That means you’ll rarely choose a tariff only for the blanket—your overall household usage and meter type matters more.
Key takeaways (UK)
- Single‑rate: typically best if you have gas central heating or you’re not shifting lots of use overnight.
- Economy 7 / multi‑rate: can help if you can move a meaningful share of usage into off‑peak hours. A blanket alone often isn’t enough to justify it.
- Smart time‑of‑use (TOU): may be cheapest if your supplier offers very low off‑peak rates and you can align use (and/or have EV/battery/heat pump).
- Standing charge still applies regardless of how little power you use. If the blanket is your main winter electricity increase, focus on overall tariff value, not just the night rate.
Compare tariffs for your home (blanket‑friendly choices)
To find the cheapest electricity tariff for running an electric blanket in the UK, compare deals using your postcode, meter type and payment method. Prices vary by region and tariffs can differ sharply in standing charge, exit fees and eligibility.
What to check before you switch
- Meter type
- Single‑rate, Economy 7/multi‑rate, or smart meter. Your meter affects which tariffs you can take.
- Usage pattern
- If you mainly use the blanket at bedtime, that may not match off‑peak hours. Off‑peak windows can start late evening or after midnight (varies by region/meter settings).
- Standing charge
- Low usage households can be disproportionately affected by a high daily standing charge—compare total annual cost, not just unit rate.
- Exit fees & term length
- Fixed tariffs may have exit fees; check if you may move home or change meter type soon.
Tip: If your electric blanket is the only thing you run at night, don’t assume Economy 7 will be cheaper. The day rate is usually higher and can outweigh any off‑peak savings.
Get a quote (whole of market)
Tell us a few details and we’ll show available UK home energy tariffs. You can compare fixed, variable and (where available) smart time‑of‑use options.
Two realistic cost scenarios (with assumptions)
Below are estimated costs to help you sense‑check whether it’s worth chasing a special tariff just for an electric blanket. Your blanket’s label (W) and your exact tariff rates will change the result.
Scenario A: Pre‑heat then off overnight (typical use)
- Blanket: 100W
- Use: 30 minutes pre‑heat + 7.5 hours on low = 8 hours/day
- Energy: 0.1kW × 8h = 0.8kWh/day
- Tariff example: 28p/kWh (single‑rate)
Estimated cost: 0.8kWh × £0.28 = £0.22 per night (about £6.72 per month at 30 nights).
If your unit rate is higher/lower, multiply 0.8 by your £/kWh.
Scenario B: Dual control blanket, shorter use
- Blanket: 60W per side, one side used = 60W
- Use: 3 hours/day
- Energy: 0.06kW × 3h = 0.18kWh/day
- Tariff example: 30p/kWh (single‑rate)
Estimated cost: 0.18kWh × £0.30 = £0.05 per night (about £1.62 per month at 30 nights).
In this scenario, standing charge differences can outweigh blanket costs.
Important: Many blankets don’t draw their full wattage continuously on low settings (thermostat cycling). The numbers above intentionally keep the maths simple and may overestimate real‑world use.
Tariff types compared (what suits an electric blanket?)
Use this table to decide which tariff structure is most likely to be “cheapest” for your blanket and your overall home electricity. Always compare total annual cost using your postcode and meter type.
| Tariff type | When it can be cheapest | Watch‑outs (UK) | Best for |
|---|---|---|---|
| Single‑rate (fixed or variable) | If most usage is daytime/evening and you don’t shift much overnight. | Standing charge varies by region; fixed deals may have exit fees. | Most households; blanket used any time. |
| Economy 7 / multi‑rate | If you use a lot of electricity in the off‑peak window (storage heaters, overnight EV charging). | Day rate is typically higher; off‑peak hours vary by region and may not match bedtime. | Homes with storage heating or heavy overnight loads. |
| Smart time‑of‑use (TOU) | If you can target very cheap hours (often overnight) and avoid peak pricing. | Eligibility usually requires a smart meter; rates can change by time/day and may include peak surcharges. | Smart‑meter homes happy to shift usage. |
| Prepayment (PAYG) | If it’s the most competitive option available for your meter and region (less common). | Some tariffs differ by payment method; ensure you compare like‑for‑like and factor in any top‑up convenience. | Users who prefer pay‑as‑you‑go control. |
Decision checklist: who it suits (and who it doesn’t)
A special night/off‑peak tariff may suit you if…
- You already have Economy 7 or a smart TOU tariff and you understand the hours.
- You run other large loads overnight (EV, immersion heater, storage heaters).
- You can avoid high peak rates (e.g. cooking/laundry) at expensive times.
It may not suit you if…
- The blanket is your only “overnight” usage increase.
- Your blanket use is mainly early evening (before off‑peak starts).
- You’re a low‑usage household where standing charge dominates your bill.
Practical rule: choose the tariff that’s cheapest for your whole home. Then minimise blanket costs by using timers/auto‑off and the lowest comfortable setting.
Costs, exclusions & common pitfalls (UK)
Electric blankets are usually economical, but tariff comparisons can go wrong if you ignore meter rules, standing charges and eligibility. Here are the most common UK pitfalls we see.
Standing charge can outweigh blanket costs
If you use very little electricity, a small difference in daily standing charge can matter more than shaving a few pence off the unit rate.
Economy 7 hours aren’t universal
Off‑peak windows vary (and can be split). If your blanket use doesn’t land in the off‑peak period, you may pay the higher day rate for most of it.
Smart TOU tariffs can have expensive peaks
Some TOU deals reward overnight use but penalise peak times. Always check the time bands, not just the headline “cheap hours”.
Exit fees and fixed‑term rules
Some fixed tariffs include exit fees. If you’re experimenting with a TOU or multi‑rate tariff, check whether leaving early could cost more than you save.
If you’re switching supplier, you’ll typically agree a start date; always read the tariff information label and T&Cs.
Payment method differences
Tariffs can differ for direct debit vs prepayment. Compare like‑for‑like based on how you actually pay (or plan to pay) to avoid surprises.
Safety note: Follow the manufacturer’s instructions for your electric blanket (including auto‑off/timer use and age/condition checks). This guide covers electricity costs and tariff choice, not appliance safety certification.
Electric blanket cost calculator (quick manual)
To estimate costs on your current tariff, you only need the blanket wattage (W), hours used, and your unit rate (p/kWh).
Step 1: Convert watts to kilowatts: W ÷ 1000
Step 2: Multiply by hours used: kW × hours = kWh
Step 3: Multiply by your unit rate: kWh × £/kWh
Example: 120W blanket for 6 hours on a 27p/kWh tariff: (120÷1000)=0.12kW → 0.12×6=0.72kWh → 0.72×£0.27 = £0.19 per use (estimated).
FAQs
Is it worth switching tariff just to run an electric blanket?
Usually not. Electric blankets tend to cost only a few pence to a few tens of pence per night (depending on wattage, settings and tariff). Switching makes sense if the new tariff is cheaper for your overall household usage, not just the blanket.
Will Economy 7 make my electric blanket cheaper?
Only if the blanket is used during your off‑peak hours and you shift enough other electricity into off‑peak to offset the usually higher day rate. Off‑peak times vary by area and meter configuration, so confirm your actual switching times with your supplier.
Do I need a smart meter for a cheap overnight tariff?
For many time‑of‑use tariffs, yes—suppliers typically require a working smart meter to measure half‑hourly or time‑banded consumption. Economy 7 can exist on traditional multi‑rate meters, but availability varies.
What matters more: unit rate or standing charge?
Both. For low usage households, standing charge can be a big share of the bill. For higher usage households, the unit rate often dominates. When comparing, look at the estimated annual cost for your usage rather than picking the lowest unit rate alone.
Can my payment method change which tariff is cheapest?
Yes. Some suppliers price tariffs differently for direct debit, receipt of bill, or prepayment. If you switch payment method, re‑compare because the “cheapest” deal for one payment method may not be cheapest for another.
How do I find my electric blanket wattage?
Check the product label/tag on the blanket or control unit, the instruction manual, or the retailer listing. It’s usually shown as watts (W). If you can’t find it, use a cautious estimate (e.g. 50–150W) and treat your result as approximate.
Does an electric blanket cost less than a portable electric heater?
Typically, yes. Many portable fan or oil‑filled heaters are around 1,000–2,000W, far higher than an electric blanket. But the right choice depends on what you’re heating (a person vs a room) and how long you run it.
I’m a tenant—can I switch electricity tariff?
In many cases, yes, as long as you pay the bills and your contract allows it. If bills are included in rent, you usually can’t change the supplier. If you have a prepayment meter, switching can be possible but may be more restricted.
Trust, methodology & sources
Editorial transparency
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- May 2026
How we assess “cheapest” for an electric blanket
Because an electric blanket’s energy use is typically small, we assess “cheapest” in a way that prevents misleading conclusions:
- Total household bill first: We prioritise overall annual cost (unit rate + standing charge), not a single night rate.
- Meter eligibility: We account for UK constraints (single‑rate vs Economy 7 vs smart TOU availability).
- Practical usage timing: We consider that blanket use often happens at bedtime and may not align with off‑peak windows.
- Assumptions stated: Scenarios use simple wattage × hours × unit‑rate maths, clearly labelled as estimates.
Limitations: Supplier prices change; some tariffs are limited by region, credit checks, smart meter status, or existing customer rules. Off‑peak periods can differ by distribution region and meter settings.
Sources (UK)
- Ofgem (UK energy regulator) – guidance on the energy market and consumer protections.
- Citizens Advice: Energy – help with bills, switching, and complaints.
- GOV.UK – official UK government information, including consumer and cost of living support.
Ready to check the cheapest electricity deals for your home?
Compare whole‑of‑market tariffs by postcode and meter type. You’ll see options that may suit overnight use, without choosing a tariff based on the blanket alone.
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