L Prize Competition
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The L Prize (aka the Bright Tomorrow Lighting Prize) is a competition run by the United States Department of Energy aimed to "spur lighting manufacturers to develop high-quality, high-efficiency solid-state lighting products to replace the common incandescent light bulb".[1]
The competition, launched in May 2008 at Lightfair, offers two prizes for the replacement of two types of bulb, an A19 60-watt incandescent light bulb and a PAR 38 halogen incandescent bulb. The prize fund for the 60 W replacement is up to a maximum of US$10 million and for the PAR 38 up to US$5 million.[2] There is a third category, yet to be publicly defined, called the 21st-century lamp.[3]
Winner
It was announced on 3 August 2011, that the winner of the 60 W replacement bulb competition was a bulb made by Philips.[5][6] The winning bulb was a LED lamp using less than 10 watts and emitting the equivalent amount of light as a traditional 60-watt incandescent bulb. That amounts to an 83% energy savings. It was announced that Philips would be given the US$10 million cash prize.[5][6] The bulb was released commercially in February 2012 through several online sellers. The widespread launch at retail stores, however, was not until Earth Day, April 22.[7] Although the subsidized price was expected to be $22 in the first year, $15 in the second and $8 in the third, the bulb was initially selling for $50–$60 (without rebates) as of July 2012. As of March, 2013 Home Depot began offering the bulbs for $15 in stores.[8] Many stores sold out, and according to Philips customer service the L-prize bulb has been discontinued.
2012 Yılında 49 Milyon Led lamba satıldı ve 1 yıllık enerji tüketimi 675 Milyon dolar düştü
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