Light-emitting diodes are more energy efficient than the incandescent bulbs still widely sold around the world – and more expensive.

The price of an LED lighting chip will fall to $1 by 2012, says Mark McClear of Cree.
This higher price could evaporate within two years, sparking a huge market for the electricity saving bulbs and light fixtures.
LEDs use as little as one-fifth the energy of incandescent bulbs and 12 percent less than compact fluorescents. (They also have none of the mercury found in compact fluorescents.)
But the costs of solid-state lighting come to $40 or so a bulb, and fixtures are much more. This is down from $80 or more a bulb just a year ago. By 2012 the price of an LED chip appropriate for lighting could fall to $1 from about $3 today, closing the gap, says Mark McClear, director of business development at Cree. Fixtures equivalent in intensity to incandescent products on the market today will need 100 chips to generate the same amount of light. Their price will be about the same.
The price of LED chips has fallen as brightness increased, McClear said at the Strategic Materials Conference in Half Moon Bay, CA.
Not long ago, 400 chips were needed, at $4 a piece, with the cost of the resulting fixture too high to be competitive. Improvements in light intensity have made that 200 today at $2 a piece.
With technology continuing to improve, the lighting market is on the cusp of a dramatic transformation with energy efficiency the force behind new business and consumer purchases.
Posted by Mark Boslet 



