To answer how much power does a laptop use per hour can vary greatly depending on several factors, including the specific model and what activities are being performed at the time. The standard wattage for most mid-range laptops ranges anywhere from 20 to 60 watts per hour. This is considered relatively low compared to other electronic devices such as home audio equipment or gaming consoles, which can draw anywhere between 50 to 2000 watts per hour according to Energuide.