CFL

Compact fluorescent lamps (CFLs) that could fit into standard light sockets only hit the market in the 1980s, but the signs are their days may be numbered. GE has announced it will cease production of CFLs this year and instead switch its focus to producing LEDs.

Sharp has developed an LED light bulb series that can change color and brightness

The new Smart Lite CFL allows you to replace the bulb and reuse the ballast, saving waste and money.