Light it up!
“A quick and easy way to reduce your energy use is to replace existing incandescent bulbs with energy-efficient compact fluorescent ones. According to the DOE, switching to Energy Star approved bulbs can save the average household $45 per year. Regardless of the bulbs you use, turn them off when you leave the room. For laundry rooms, garages, basements, and other little-used areas consider the installation of timers that automatically turn off the lights after a preset amount of time, just in case you forget to shut them off”