Saw this great, little primer on MarthaStewart.com with ideas for increasing the energy efficiency of your lighting. She suggests using a three way switch so you can decrease the light output of a lamp if you don't need it. Click here to see a selection of all of our three way switch portable lighting. 

The elegant floor lamp above features both energy efficient bulbs and a three way switch. Take a look: Sight Saver Balance Arm Floor Lamp or view our entire floor lamp collection.