See how much standby power costs you and what a smart plug could save. Free UK energy savings calculator.
See how much standby power and wasted energy are costing you — and what a £25 smart plug could save. Based on 2026 UK energy prices. Smart plugs can cut device running costs by 20–40% through scheduling and standby elimination.
Examples: TV ≈ 100 W, gaming PC ≈ 300 W, electric heater ≈ 2,000 W, kettle ≈ 3,000 W.
The rest of the day it is plugged in but on standby.
Most devices draw 1–10 W on standby; some games consoles draw up to 15 W.
2026 Energy Price Cap average ≈ 24.5p/kWh.
A smart plug schedule can switch off nearly all standby power overnight and while you’re out.
Good smart plugs cost £10–£40, with energy monitoring models at the higher end.
Your estimate
Assumes 365 days per year.
Estimates are indicative. Real savings depend on your devices and habits. Energy monitoring smart plugs show your actual draw in the app — check a week of readings to tune the schedule. Never put high-power appliances such as kettles or heaters on a standard smart plug without checking its rating.