An energy expert has issued a warning about 'vampire appliances' that could cost households an extra £75 a year. From July 1, 2026, electricity prices are set to rise by 13%, pushing typical annual dual-fuel bills to £1,862. The hidden cost comes from devices left plugged in and switched on, even when not in use.
How Much Power Do Vampire Devices Use?
Research indicates that the average UK home contains up to 41 electrical devices, with 10 to 13 used daily. The rest remain plugged in, slowly draining power. According to SAGA, vampire appliances can consume up to 300kWh per year, costing over £75 annually at the new rate of 25.11p per kWh.
Expert Advice on Reducing Standby Power
Glen Fariva, Lecturer in Power Electronics at The University of Melbourne, explained that chargers continue to draw power even when not charging. 'Vampire power is real,' he said. 'If you leave it plugged in, a charger will continuously draw a small amount of power to keep control circuits running, with the rest lost as heat.'
While individual chargers use negligible power, the cumulative effect across multiple devices can be significant. Fariva recommends unplugging chargers when not in use and switching off devices at the wall.
Fire Hazards from Cheap Chargers
Beyond cost, leaving chargers plugged in can pose a fire risk. Fariva warned that cheap, uncertified chargers are particularly concerning. 'If a charger gets warmer than usual, makes noise, or is damaged, it should be replaced immediately and not left plugged in,' he added.
To avoid unnecessary costs and potential hazards, consumers are advised to unplug devices and switch off at the wall when not in use. This simple step can save money and improve home safety.
