The standard CFL works in a three-way lamp exactly the same way a one-way incandescent does—the light remains off for three of every four clicks of the lamp's switch and you get only one level of light.

Just like a three-way incandescent, a three-way CFL would provide you with three different light levels that would be equivalent to the light output of a 50/100/150-watt incandescent.

For more information about compact fluorescent lighting, contact the Energy Services Office.