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How Much Does It Cost to Run a Electric Blanket in the UK? (2026)

An electric blanket warms you directly instead of the whole room, which is why it costs a small fraction of a space heater. Single blankets draw around 50 watts, doubles up to 200 on the highest setting, and most cycle down once warm.

A typical electric blanket (100 W) costs £0.026 per hour, or about £6.24 per month at 8 hours a day in United Kingdom. Average running cost

WattagePer hourPer dayPer monthPer year
Low (50 W)£0.013£0.10£3.12£37.96
Typical (100 W)£0.026£0.21£6.24£75.92
High (200 W)£0.052£0.42£12.48£151.84

Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 8 h/day ≈ 292 kWh per year.

In the UK, with electricity at £0.26 per kWh (source: Ofgem price cap 1 Jul–30 Sep 2026, 2026-07), a typical electric blanket costs £0.026 per hour and about £75.92 per year at 8 hours a day. Each £1.00 of electricity buys roughly 38.5 hours of use.

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Frequently asked questions

Is an electric blanket cheaper than a space heater?

Yes, by roughly ten to fifteen times. A 100 watt blanket for 8 hours uses under 1 kWh, while a 1,500 watt heater uses 12 kWh.

How much does it cost to leave an electric blanket on all night?

At 100 watts for 8 hours, under 1 kWh, so a few cents in most regions.

Do electric blankets use a lot of electricity on low?

No. On low most blankets draw 20 to 40 watts, similar to a bright LED bulb.

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