Energy expert Glen Fariva has warned that 'vampire appliances' are real, urging households to unplug chargers to avoid wasting electricity. Even when not actively charging, devices left plugged in with the wall switch on continue to draw power, adding to energy bills.
From July 1, 2026, electricity prices in Great Britain will rise by 13% under Ofgem's new price cap, pushing typical annual dual-fuel bills to £1,862. The average UK home contains up to 41 electrical devices, with 10 to 13 used daily, but the rest remain plugged in, slowly draining power.
According to research, vampire appliances could consume up to 300 kWh per year, costing over £75 annually. Fariva, a lecturer at the University of Melbourne, explained that chargers draw standby power to keep control circuits running, which is lost as heat. While negligible for one device, the cumulative effect across multiple chargers is significant.
Fariva also highlighted fire risks from cheap, uncertified chargers that lack proper protection. He advised unplugging chargers when convenient, especially if they feel warm, make noise, or show damage. Modern chargers are generally safe, but leaving them plugged in can shorten their lifespan due to voltage fluctuations.
