Have you checked out a ComEd Kill-A-Watt power meter from the library yet? Take this device home to see how much electricity your appliances or electronics are using. I was surprised to learn that lots of things still draw electricity even when they’re turned off. You can place a Kill-A-Watt on hold through the online catalog. Note that a $10 deposit is required when checking out a Kill-A-Watt. Your deposit will be returned when you return the monitor and all its accompanying material to the desk.