Cheapest electricity tariff for electric blankets (UK)
Electric blankets are usually low-cost to run — so the “cheapest tariff” is typically the one that keeps your overall unit rate low (or gives you cheaper off-peak for overnight use), without penalising the rest of your home’s electricity use.
- See which tariff types suit overnight blanket use (single-rate vs Economy 7 vs tracker).
- Get estimated running costs using realistic UK assumptions (and what can change them).
- Compare whole-of-market electricity deals and switch with confidence.
Estimates use typical electric blanket wattages and UK tariff structures. Your exact costs depend on your meter, region, usage and supplier terms.
Fast answer: what’s the cheapest tariff for an electric blanket?
For most UK homes, the cheapest option for running an electric blanket is usually a good-value single-rate electricity tariff (low unit rate, reasonable standing charge). An electric blanket uses relatively little electricity compared with heating your whole home, so choosing a tariff purely for the blanket rarely makes sense.
If you regularly run your electric blanket overnight and you have (or can get) an Economy 7 / dual-rate meter, a cheap off-peak rate can reduce blanket costs further — but only if the overall deal still works for your household’s broader electricity use.
Key takeaways (UK-focused)
- Electric blankets are typically inexpensive to run: many are ~50–150W on average settings. The bigger cost driver is your unit rate (p/kWh).
- Don’t over-optimise for one appliance: standing charge, overall unit rate, and your total consumption matter more.
- Economy 7 can help if your blanket use is mostly off-peak and you can shift other usage too (e.g. washing machine, dishwasher, EV charging).
- Smart meters widen your options: more suppliers offer time-of-use tariffs, but rates can vary by region and may change.
- Watch exit fees and contract length if you want flexibility.
Compare electricity tariffs for your home (not just the blanket)
We’ll show you whole-of-market electricity options that may suit how you use an electric blanket — including single-rate, dual-rate (Economy 7) and other time-of-use options where available. Results depend on your postcode region, meter type and payment method.
Best for most homes
A competitive single-rate fixed tariff if you want price stability, or a variable/tracker if you value flexibility and accept rate changes.
Best for overnight use
A dual-rate (Economy 7) or time-of-use tariff if you genuinely use a meaningful share of electricity off-peak.
Good to know: Electric blankets are often cheapest when you pre-heat the bed then turn them down or off. Always follow the manufacturer’s safety guidance.
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How to choose the cheapest electricity tariff for electric blanket use
To find the “cheapest” tariff in the UK, you need to look at the total annual cost for your home — then check whether your electric blanket use lines up with off-peak hours (if you’re considering dual-rate or time-of-use tariffs).
Step 1: Check your meter type
- Single-rate
- One unit rate for all electricity, plus standing charge. Simple and often best if you don’t use much power overnight.
- Economy 7 / dual-rate
- Two unit rates: cheaper off-peak, higher peak. Off-peak times vary by region and meter setup.
- Smart meter (time-of-use capable)
- May access time-of-use tariffs with specific cheap windows, but rates and eligibility vary by supplier.
Step 2: Estimate how much the blanket really uses
Electric blankets cycle on/off to maintain temperature. A label might say 100W–150W, but average use can be lower depending on setting and room temperature.
Rule of thumb: If your blanket averages 100W while on, that’s 0.1kWh per hour. Multiply by your unit rate to estimate the cost.
Step 3: Pick a tariff type that matches your wider usage
- Fixed: unit rate and standing charge locked for the term (check exit fees).
- Standard variable: flexible but prices can change.
- Tracker: price follows a published formula (can go up or down).
- Time-of-use: cheap windows can be great for overnight use, but peak rates may be higher.
Two realistic UK cost scenarios (with numbers)
Scenario A: Pre-heat then off (typical evening routine)
- Assumed average power: 100W (0.1kWh per hour)
- Use pattern: 2 hours per night for 120 nights (winter)
- Electricity rate used: 28p/kWh (single-rate example; your rate varies)
| Calculation | Estimate |
|---|---|
| kWh per night | 0.2kWh |
| Cost per night | ~£0.06 |
| Season cost (120 nights) | ~£6.72 |
Standing charges are not included because you pay them regardless of blanket use; they matter when comparing tariffs overall.
Scenario B: Overnight use (dual-rate benefit depends on peak rates)
- Assumed average power: 100W (0.1kWh per hour)
- Use pattern: 8 hours per night for 150 nights
- Example rates: 18p/kWh off-peak vs 30p/kWh peak (Economy 7 example)
| Calculation | Estimate |
|---|---|
| kWh per night | 0.8kWh |
| Cost per night (off-peak) | ~£0.14 |
| Season cost (150 nights) | ~£21.60 |
Important: Economy 7 can still be more expensive overall if most of your household electricity happens at peak times and the peak unit rate/standing charge is higher. Always compare total annual cost, not blanket-only cost.
Tariff types compared: which is cheapest for electric blanket use?
This table shows how common UK electricity tariff types typically stack up for electric blankets. Your cheapest option depends on regional rates, your meter, and when you use electricity.
| Tariff type | When it can be cheapest | Main watch-outs | Best for… |
|---|---|---|---|
| Single-rate fixed | If you want predictable bills and your blanket use is modest. | Exit fees, credit checks, and rates vary by region. | Most households using a blanket for pre-heat/evening comfort. |
| Single-rate variable | If you value flexibility and don’t want exit fees. | Prices can change; the cheapest month might not stay cheapest. | Renters and anyone likely to move or switch soon. |
| Tracker | If the tracker formula currently undercuts fixed/variable options. | Rate can rise; check how the tracker is calculated and any caps. | Confident switchers comfortable with price movement. |
| Economy 7 (dual-rate) | If you use a meaningful share of electricity off-peak (blanket overnight + other loads). | Peak rate can be higher; off-peak hours vary; not always available to switch to. | Night-shift households, homes with storage heating, some EV owners. |
| Time-of-use (smart) | If the cheap window aligns with your blanket hours and other usage can shift too. | Eligibility, smart meter requirement, and peak pricing complexity. | Households who can actively schedule usage (and like detail). |
Decision checklist: does a dual-rate/off-peak tariff suit you?
Likely suits you if…
- You already have Economy 7 / dual-rate metering.
- You can run other loads off-peak (laundry, dishwasher, immersion heater, EV).
- Your off-peak window matches when you actually use the blanket.
Think twice if…
- Most of your electricity use is daytime/evening (peak).
- You’d only be shifting the electric blanket (small consumption overall).
- You’re unsure of your off-peak times or you can’t control usage timing.
Check before switching
- Exit fees and contract length.
- Payment method differences (Direct Debit vs prepayment where applicable).
- Whether your supplier supports your meter setup.
Costs, exclusions and common pitfalls (UK)
A few things can make a “cheap” tariff turn out not-so-cheap for electric blanket use — especially if you change meter type or pick a deal that doesn’t match your household pattern.
1) Standing charges still apply
Even if your blanket costs pennies a night, your standing charge can be a large share of your electricity bill. Compare tariffs by estimated annual cost, not blanket-only running cost.
2) Economy 7 peak rates can bite
Dual-rate tariffs often have a higher peak unit rate. If you cook, work from home, or use appliances mainly at peak times, your total bill can rise even if the blanket is cheaper overnight.
3) Off-peak hours vary
Economy 7 off-peak times are set by your meter and region (and can differ from what you assume). If your blanket use misses the cheap window, you won’t see the benefit.
4) Prepayment and eligibility differences
Some tariffs are only available with certain payment methods (often Direct Debit). If you’re on a prepayment meter, availability can be more limited and prices can differ.
5) Meter changes may take time
Changing from single-rate to dual-rate (or vice versa) isn’t always instant and may depend on supplier policy, meter capability and appointment availability.
6) Safety and product exclusions
This guide covers electricity tariffs, not product advice. Always follow your blanket’s manual (e.g. whether it’s safe to run overnight, use on certain mattresses, or with a timer).
Practical tip: If you’re trying to cut costs, an electric blanket can be a targeted comfort measure compared with heating an entire home — but your cheapest electricity tariff is still the one that fits your whole household pattern.
FAQs
Are electric blankets cheap to run in the UK?
Often, yes. Many electric blankets use around 50–150W depending on size and setting, and they cycle on/off. Your cost depends on your unit rate (p/kWh) and how long you run it.
Is Economy 7 always cheaper for electric blankets?
No. Economy 7 can reduce costs if your blanket (and other electricity use) falls in the off-peak window. But the peak rate is often higher, so your total bill can increase if most usage is at peak times.
Do I need a smart meter for time-of-use electricity tariffs?
Usually, yes. Many time-of-use tariffs require a smart meter so your usage can be measured by time band. Eligibility and availability vary by supplier and region.
Will switching tariff affect my electric blanket’s performance?
No — the blanket will work the same. Switching affects the price you pay per kWh and standing charges, not the electricity supplied to your home.
Can I switch electricity supplier if I’m renting?
In many cases, yes — if you pay the energy bills and the supply is in your name. If you’re on a landlord-supplied arrangement or bills are included, you may not be able to choose the tariff.
Do electric blanket costs change by UK region?
Yes. Electricity prices vary by region due to how tariffs are set, and standing charges can differ. That’s why comparing with your postcode is important.
Does the Energy Price Cap decide what I pay?
The Ofgem price cap limits the maximum suppliers can charge for default tariffs (and sets limits for some other tariff structures), but your actual price depends on your tariff, region, and how much electricity you use.
What’s the single best way to reduce electric blanket costs?
Use it efficiently: many people pre-heat the bed then turn it down or off. For tariffs, focus on getting a competitive unit rate for your household and avoid deals that raise your peak-rate costs unnecessarily.
Trust, methodology and sources
Page details
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- April 2026
How we assess “cheapest” for electric blanket use
We treat “cheapest” as the tariff that gives the lowest estimated total electricity cost for a household, while considering whether blanket use falls in cheaper time bands (where relevant). Electric blankets typically consume a small amount of electricity, so we avoid recommending tariff changes that could increase overall costs.
- Inputs used in examples: typical blanket power range (often 50–150W), usage hours, and illustrative unit rates in p/kWh.
- What we compare: unit rates (peak/off-peak where applicable), standing charges, contract terms (length, exit fees), meter/payment compatibility, and regional availability.
- Limitations: suppliers set prices by region and may change them; time-of-use windows vary; your blanket’s actual draw depends on setting and thermostat cycling.
No guarantees: We don’t promise you’ll save money. Use the quote results to compare estimated annual costs and always read tariff terms before you switch.
Find a cheaper electricity deal for your home
Compare whole-of-market tariffs by postcode, meter type and payment method — and choose the option that keeps your overall electricity costs low (including electric blanket use).
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