LEDs Emerge To Fight Fluorescents

Established players in the lighting industry and a host of startups are now grooming LEDs to take on the reigning champion of residential lighting, the familiar pear-shaped incandescent light bulb. The light bulb has been running out of friends recently. California and Canada have decided to ban the sale of incandescent bulbs by 2012. Australia is banning them in 2010. The European Union is looking at banning production of the bulbs. A U.S. Senate committee is working on a proposal that would phase out the light bulb in 10 years. And in New Jersey, where the first practical incandescent bulb emerged from Thomas Edison's laboratory in 1879, a bill has been introduced to ban their use in government buildings. Governments are gunning for the light bulb because it's much less efficient than fluorescents, using about five times more energy to produce the same amount of light. Lighting consumes 22 percent of electricity produced in the U.S., according to the Department of Energy, and widespread use of LED lighting could cut consumption in half. By 2027, LED lighting could cut annual energy use by the equivalent of 500 million barrels of oil, with the attendant reduction in emissions of carbon dioxide, the gas believed to be responsible for global warming. Much of that reduction would be possible with today's technology, using compact fluorescents, or CFLs. But consumers haven't warmed to them. The light quality hasn't been satisfactory, most take time to turn on and aren't dimmable. The LED has advantages over the CFL in most of those areas, and judging by this week's Lightfair trade show in New York, it could be a serious challenge to the CFL in a few years. What holds it back is chiefly price, but LEDs are already an economic alternative for niche uses. In the last two years, the diodes have doubled in energy efficiency and brightness, according to Greg Merritt, director of marketing for Durham, N.C.-based LED-manufacturer Cree Inc. In particular, LEDs that produce a yellowish or "warm" light similar to incandescents have improved. U.S. Department of Energy on LEDs: http://www.netl.doe.gov/ssl/ Recycling options for CFLs: http://www.lamprecycle.org http://www.cree.com Lighting Science Group: http://www.lsgc.com/ -------------------------------------------------------------------------------- Article's URL: http://www.phillyburbs.com/pb-dyn/news/25-05112007-1344703.html [Proofreader's note: this article was edited for spelling and typos on May 14, 2007]

Note: http://www.netl.doe.gov... http://www.lamprecycle.org http://www.cree.com http://www.lsgc.com/ http://www.phillyburbs....