
PECO estimates that you can save up to $15 per year by installing wall-mounted light sensors in your house and putting devices on timers so that they are turned off during the hours that they are not needed. You can save another $25 per year by installing outdoor lights with light sensors, so that they only turn on after dark, and motion sensors, so that they turn on just while you need them to see while you unlock your door. You get the benefit of security lights while minimizing the use of these higher wattage lights.
Read more from the Department of Energy.
Photo by Susan O'Donnell