Most electronics that are plugged in draw power even when not being used. The average US home has 40 “vampire”s drawing energy at any given time. Walk around your home after dark one night and look at all of the blinking lights: every one of those lights is drawing power. Use power strips for all electronics that you are not using to prevent phantom power from being drawn.
Kill A Watt
The average US household spends $100 per year powering items that are off or in “standby” mode. Purchase a “kill a watt” electricity usage monitor to see which of your appliances draws the most energy, and be sure to plug them into power strips.