Light Emitting Diodes (LEDs) use 85% electricity than other incandescent light bulbs and 50% less in than compact fluorescent light (CFL) bulbs. They cost more than CFLs because they are still relatively new with limited production. Just as with CFLs, the more they are produced and purchased, the more the price will come down.
Philips Light, part of Netherlands-based Royal Philips Electronics has invested in purchasing LED manufacturing companies. Cree Inc based in Durham, North Carolina also produces LEDs.Another environmental advantage of LEDs is that they do not contain mercury like CFLs. LEDs consist of a small semiconductor that emits photons when electricity is applied. You probably recognize them as indicator lights on small appliances and stereo equipment. The LED lasts 30 times longer than incandescent light bulbs and five times longer than CFLs. Source: The Wall Street Journal, 9/15/08
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