smartphones, tablets, smartwatches, along with various devices, these outlets generally lack on/off switches. Consequently, it is reasonable to question whether these outlets are consuming power when nothing is connected.
Although USB outlets do consume a small amount of power even when no device is connected, it’s usually just 0.05 watts. This is a negligible power consumption and should have minimal effect on your home energy usage. When you consider that some light bulbs can use 60W of power while active, the 0.05W consumed by USB outlets in idle mode is insignificant in terms of your electric bill.
