Calculate the cost of electronics left on standby all year.
Each device left plugged in draws a small standby current around the clock. Multiplying that draw across devices and a full year reveals the phantom load. A handful of watts per device is easy to ignore, but dozens of devices across a year make standby power a real and avoidable charge.
Standby Power Cost
Annual kWh = devices x standby watts x hours x 365 / 1000
Annual kWh = devices x standby watts x hours x 365 / 1000 Each device left plugged in draws a small standby current around the clock. Multiplying that draw across devices and a full year reveals the phantom load.
A handful of watts per device is easy to ignore, but dozens of devices across a year make standby power a real and avoidable charge.
This calculator takes 4 inputs: Number of devices, Average standby watts, Standby hours/day, Electricity rate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.