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How Much Does It Cost to Run a Smart Speaker in the UK? (2026)
Smart speakers listen constantly and draw 2 to 4 watts idle, rising slightly when playing music. Each one adds around 20 to 30 kWh a year, which matters mainly if you have many.
A typical smart speaker (3 W) costs £0.001 per hour, or about £0.56 per month at 24 hours a day in United Kingdom. Cheap to run
| Wattage | Per hour | Per day | Per month | Per year |
|---|---|---|---|---|
| Low (2 W) | £0.001 | £0.012 | £0.37 | £4.56 |
| Typical (3 W) | £0.001 | £0.019 | £0.56 | £6.83 |
| High (6 W) | £0.002 | £0.037 | £1.12 | £13.67 |
Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 24 h/day ≈ 26 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 smart speaker costs £0.001 per hour and about £6.83 per year at 24 hours a day. Each £1.00 of electricity buys roughly 1,282.1 hours of use.
How to lower the cost of running a smart speaker
- Count them. Six speakers at 3 watts each cost more than a fridge over a year.
- Turn off the always-on display on models that have one.
- Unplug speakers in rooms you rarely use.
In standby it draws about 2 W, which adds roughly 18 kWh (£4.56) per year if it is never unplugged.
Frequently asked questions
How much electricity does a smart speaker use?
About 25 kWh a year at 3 watts continuous.
Does a smart speaker use power when not playing?
Yes. Idle draw is most of its consumption since it listens all the time.
Should I unplug my smart speaker at night?
Only if you have several. The saving per speaker is small.
Cost by region
- United States (average)
- California
- Texas
- New York
- Florida
- Canada (average)
- United Kingdom
- Germany
- France
- Australia
- India