Home energy usage estimator

Rated watts on a nameplate are a maximum, and the duty cycle guess is exactly that: a fridge compressor cycles near 35 percent, an air conditioner near 60, and a laptop drawing 60 W only while awake. The standby column counts only the hours the appliance is off, so the two loads never double up. A plug-in power meter beats this estimate every time; what this page gives you is the ranking, which appliance carries the bill, at no cost and with nothing uploaded. It works the year out as 365/7 weeks rather than a rounded 52.