Cheapest tariff for electric blankets in the UK (what to look for)
Electric blankets are usually cheap to run — so the “cheapest tariff” is typically the one with the lowest unit rate at the hours you actually use it, without adding unnecessary standing charges or exit fees.
- See which tariff types can make sense (standard variable, fixed, Economy 7/10, smart time-of-use)
- Estimate your electric blanket cost per night using realistic UK unit rates
- Compare tariffs across the whole market based on your postcode and meter setup
Estimates only. Prices vary by region, meter type and payment method. Always check tariff terms, standing charges and exit fees before switching.
Fast answer: the cheapest tariff for an electric blanket is usually the same as the cheapest tariff for your home
Because electric blankets use relatively little electricity compared with heating, showers, ovens and tumble dryers, you rarely need a “special” tariff for them. What matters is: your unit rate (p/kWh) at the time you use the blanket, plus your standing charge, and any exit fees if you switch again later.
If you use it at night
Consider whether you already have (or could benefit from) Economy 7/10 or a smart time-of-use tariff — but only if enough of your usage shifts to the cheaper hours.
If it’s just for pre-warming
A standard single-rate tariff is often fine. Focus on a low unit rate and sensible standing charge.
If you’re on prepayment
Check if switching to Direct Debit is possible and cheaper for you. Not everyone can change payment method (credit checks and landlord/tenancy constraints may apply).
Quick reality check: even a 100W blanket running for 8 hours uses about 0.8 kWh. At 30p/kWh that’s ~24p per night (estimated). Many people run them on lower settings or for shorter periods, which can be less.
Compare tariffs the right way (so you don’t overpay for a “cheap night rate”)
If you’re only thinking about an electric blanket, it’s easy to get pulled towards tariffs with flashy off-peak prices. The best approach is to compare your whole-home cost under each tariff, then decide if a night-rate tariff is worthwhile.
Tariff types you’ll see in the UK (and when they suit electric blanket use)
- Single-rate (standard)
- One unit rate all day. Often simplest and competitive if you don’t shift a lot of usage to overnight.
- Fixed tariff
- Unit rate and standing charge set for the term. Can offer budgeting stability; may include exit fees.
- Standard Variable Tariff (SVT)
- Price can change (often when the Ofgem price cap changes). No fixed end date; usually no exit fee.
- Economy 7 / Economy 10
- Cheaper off-peak hours, higher peak rate. Can work if you consistently use electricity overnight (e.g., storage heaters, EV charging). For just an electric blanket, savings can be small unless other usage also shifts.
- Smart time-of-use (TOU)
- Prices vary by time. Potentially good if you can flex usage — but check how often cheap hours occur and what the peak rates are. Requires a compatible smart meter in many cases.
Quick cost estimator (manual)
Use your blanket’s wattage (W) from the label or manual. If you don’t know, many are around 60–150W depending on size and setting.
Step 1: Convert W to kW
kW = watts ÷ 1000
Step 2: Multiply by hours used
kWh per night = kW × hours
Step 3: Multiply by your unit rate
Cost per night ≈ kWh × unit rate
Important: Many blankets cycle on and off once warm, so the average power draw can be lower than the label rating. Treat results as estimates.
Scenario A (single-rate, typical use)
Assumptions: 100W blanket, 2 hours pre-warm + 4 hours on low (total 6h), single-rate electricity 30p/kWh.
Energy: 0.1 kW × 6h = 0.6 kWh
Estimated cost: 0.6 × £0.30 = £0.18 per night (~£5.40 over 30 nights)
Scenario B (Economy 7 night rate)
Assumptions: 150W blanket used 8h overnight (off-peak), night rate 16p/kWh, day rate higher but ignored here for blanket-only comparison.
Energy: 0.15 kW × 8h = 1.2 kWh
Estimated cost: 1.2 × £0.16 = £0.19 per night (~£5.70 over 30 nights)
Why Scenario B isn’t automatically cheaper: your blanket may use more power or run longer overnight, and Economy 7 usually has a higher daytime rate. You need to look at the whole home (and the standing charge) to decide.
Get a personalised tariff comparison
Tell us a few details and we’ll match you with tariffs available in your area. This helps you avoid picking a “cheap night rate” that increases your overall bill.
Tariff comparison: what matters most for electric blanket use
Use this table as a decision aid before you compare deals. Exact prices depend on region, supplier and payment method, so focus on which costs to check rather than chasing one headline number.
| Tariff type | What to check | When it can be “cheapest” for electric blankets | Common trade-off |
|---|---|---|---|
| Single-rate fixed | Unit rate, standing charge, exit fee, end date | If you don’t shift lots of electricity overnight and want predictable costs | May pay exit fees if you switch early |
| Single-rate SVT | Current rates, how/when they can change | If you want flexibility and may switch again soon | Rates can rise; less price certainty |
| Economy 7/10 | Day rate, night rate, off-peak hours in your area, standing charge | If your blanket runs mostly off-peak and you also have other overnight use (e.g., storage heating, EV) | Higher day rate can outweigh night savings |
| Smart time-of-use | Peak prices, cheapest windows, required meter, price change rules | If you can regularly run appliances in cheaper windows (blanket alone may not move the needle) | More complex bills; expensive peak slots |
Decision checklist (quick)
- Meter: Do you have Economy 7/10 already? If not, would changing meter be allowed and worth it?
- Usage pattern: Do you use the blanket mainly in off-peak hours (and how many hours)?
- Whole-home shift: Can you shift other usage overnight too (laundry, dishwasher, EV, immersion heater)?
- Standing charge: Is it higher on the “cheap rate” tariff? Standing charges apply even if you barely use electricity.
- Payment method: Direct Debit vs prepayment can change prices and eligibility.
- Fees & terms: Any exit fee, price changes, or minimum term?
Who a night-rate tariff can suit (and who it doesn’t)
Often suits:
- Storage heaters / electric heating loads
- EV charging overnight
- Regular overnight appliance use
Often doesn’t:
- Most usage is daytime/evening
- Blanket is your only night-time load
- You can’t control usage timing
If the electric blanket is your main reason for considering Economy 7, compare carefully — the savings can be modest, while the higher day rate can raise your overall costs.
Costs, exclusions and common pitfalls (UK-specific)
1) Standing charge can outweigh “cheap usage” wins
Electricity standing charges vary by region and supplier. If you’re looking at a tariff because of a low unit rate, always check the standing charge as part of the total cost.
2) Economy 7 hours aren’t the same everywhere
Off-peak windows can differ by region/metering setup and may change with daylight saving on some meters. Confirm your exact off-peak times before assuming overnight use is “cheap”.
3) Two-rate tariffs can be risky for day-heavy households
If you cook, work from home, or run appliances mostly in the day/evening, a higher day rate may increase your bill, even if your electric blanket is cheaper overnight.
4) Exit fees and contract terms can reduce real-world benefit
Some fixed deals include exit fees per fuel. If you think you may switch again soon, factor this into your decision.
5) Prepayment pricing & availability
Some tariffs are limited to certain payment methods. If you’re on a prepayment meter, you may see fewer deals; smart prepayment options vary by supplier and meter compatibility.
6) Blanket energy use depends on settings and cycling
Wattage on the label is typically the maximum. Many blankets cycle to maintain temperature, so real consumption can be lower — but it varies by room temperature, bedding and thermostat setting.
Safety note (non-tariff): Always follow the manufacturer’s instructions and replace old/damaged blankets. If you’re unsure about safe use, you can check general home safety guidance on GOV.UK and your local fire service websites.
FAQs: cheapest tariffs for electric blankets (UK)
Is an Economy 7 tariff cheaper for an electric blanket?
It can be cheaper for the blanket if you use it during off-peak hours. But Economy 7 usually has a higher daytime unit rate, so your overall bill can rise unless you shift enough other usage overnight too.
How much does it cost to run an electric blanket overnight in the UK?
Estimated cost depends on wattage, hours used and your unit rate. Example: a 100W blanket for 8 hours uses ~0.8 kWh. At 30p/kWh that’s ~24p/night. Many blankets cycle and may cost less in practice.
Do smart time-of-use tariffs help with electric blanket costs?
Sometimes, but usually only if you also shift other usage (EV charging, laundry, dishwasher) into the cheapest windows. For an electric blanket alone, the savings are often small, while peak prices may be higher.
Will switching payment method (prepayment to Direct Debit) make it cheaper?
It can, because some suppliers price Direct Debit deals more competitively. Whether you can switch payment method depends on supplier rules, credit checks and your meter type. Always compare on like-for-like terms.
Does my region affect whether a tariff is “cheapest”?
Yes. Electricity prices vary across Great Britain due to regional network costs reflected in standing charges and unit rates. That’s why postcode-based comparisons are important.
Can I switch to Economy 7 if I don’t have an Economy 7 meter?
Possibly, but you may need a meter change. Availability and process vary by supplier and property. If you rent, check with your landlord/agent before requesting changes that affect the meter setup.
Could a cheap blanket tariff increase my bill?
Yes — most commonly if you move to a tariff with a higher standing charge or higher daytime unit rate. Always compare estimated annual cost using your typical usage pattern, not the blanket alone.
Are there exit fees when I switch electricity tariffs?
Some fixed tariffs include exit fees; SVTs typically don’t. Exit fees and contract terms should be shown before you switch. If you’re close to the end of a fix, many suppliers allow switching without fees in a final window — check your tariff terms.
Trust, methodology and sources
Page ownership
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: April 2026
How we assess “cheapest tariff for electric blankets”
We interpret this query in a consumer-helpful way: the “cheapest” option is the tariff that minimises your overall electricity cost while reflecting when you actually use an electric blanket (typically evening/overnight). We focus on tariff components that materially affect cost in the UK market.
- Unit rate(s): single-rate, or day/night (Economy 7/10), or time-of-use bands.
- Standing charge: included because it’s unavoidable and varies by region.
- Eligibility constraints: meter type (single-rate vs two-rate), smart meter requirements, payment method (Direct Debit vs prepayment).
- Terms: exit fees, contract length, and how prices can change (SVT vs fixed).
- Practical reality: electric blankets are typically low-load, so the best tariff choice is rarely driven by the blanket alone.
Limitations: The examples on this page use assumed wattage, hours and unit rates for illustration. Real costs depend on your blanket model and thermostat cycling, your regional tariff prices, and your household consumption patterns.
Sources (UK)
- Ofgem (Great Britain energy regulator) — guidance on tariffs, switching and the price cap.
- Citizens Advice: energy supply advice — switching, billing issues and consumer rights.
- GOV.UK: energy — official UK energy information and related guidance.
Ready to find a cheaper electricity tariff for your home?
Compare whole-of-market tariffs by postcode and meter type — so you can keep electric blanket costs low without accidentally increasing your daytime rates.
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