*Energy-efficient incandescents, also known as halogen or eco bulbs, offer about 25 percent energy savings and last three times longer than traditional bulbs.
They are available in a wide variety of shapes and colors, and are compatible with dimmer switches.
*CFLs offer about 75 percent energy savings over traditional bulbs and are simply curly versions of those long fluorescent tubes. The U.S. Department of Energy said they pay for themselves in about nine months and last 10 times longer than traditional bulbs.
Some people dislike that it takes a while for them to come to full power. They are available in a range of light colors (white to yellow), a feature not available when they were first introduced.
Some CFL bulbs, but not all, work with dimmers. Check the packaging carefully to determine compatibility.
CFL bulbs contain mercury and cannot be thrown in the trash. Many retailers will recycle them for you.
*LED (light emitting diode) lighting features semiconductors that convert electricity into light.
They use only 20 to 25 percent of the energy of traditional bulbs and last up to 25 times longer.
They are expensive, $25 to $50 per light, but given their lifespans, the average annual cost is on par with other choices.