The appliances in your home can suck up loads of energy, and you might not even know it. Some even continue to pull electricity when they're turned off. Your televison might be powered down, but what effect is that little red light having on your intake?
This article from the New York Times details tools—such as smart power strips and electricity gages—that help you monitor and control your energy usage.
For more on making your home more efficient, check out Grid's August Energy Issue.