The most efficient light bulb is one that is turned OFF.
We realize this is one of the most obvious tips, but it’s worth repeating. Leaving unnecessary lights on is a waste of energy and money.
The worst offenders are high wattage bulbs that turn on in groups, such as the lights found above bathroom vanities, fans and chandeliers. They burn lots of electricity.
If leaving the lights on is a chronic problem for you, it could be costing as much as a hundred dollars a year or more.
Here’s a funny photo that has been quite popular on Pinterest.