Excerpt From Green Lighting Book:
In November 2009, 2,076 eleven-watt incandescent bulbs were removed from the iconic Reno Arch in Reno, Nevada, and replaced with more energy-efficient 2.5-watt light-emitting diodes (LEDs).
This $62,180 retrofit is expected to reduce electricity demand by 92,011 kilowatts, saving $10,441 per year for “The Biggest Little City in the World.” The upgrade is part of a citywide energy and water efficiency plan that is projected to save $1 million a year and create 222 jobs. At the lighting ceremony, the old incandescents were passed around the crowd as souvenirs of the past.
In California, Los Angeles International Airport (LAX) officials switched to LEDs for functional and outdoor lighting, reducing annual lighting costs by $55,000 and lifetime maintenance costs by $980,000. In Oconomowoc, Wisconsin, Sentry Equipment Corporation chose to light its newfactory almost entirelywith LEDs, both interior and exterior. The initial cost was three times more than incandescent and fluorescent bulbs, but this price premium is expected to be repaid within two years from electricity savings. The bulbs are expected to last for 20 years.
LEDs are themost advanced lighting technology we have now, and people are excited about it,”Avani Pavasia explained in the New Generation Lighting shop on the Bowery in New York City (in the lighting district). Pavasia is a young lighting and interior designer who hopes to work on green projects. “LEDs are especially being used now for commercial work, because that sector is more aware. Typical consumers aren’t that educated about them yet,” she added. Pavasia pointed to a massive chandelier on the ceiling of the store. An array of blue LEDs shimmered through the etched glass. “That can change to many colors, since there is a separate controller,” Pavasia explained.
So LEDs are future technology, here now. A recent study by Pike Research predicts that LEDs will account for nearly half of a $4.4 billion market for lamps in the commercial and industrial sectors by 2020, and residential applications are rapidly expanding. General Electric (GE) is now spending half its lighting research budget on the technology. Yes, LEDs are stillmore expensive than conventional lighting, but their cost is falling rapidly, their quality is improving by leaps and bounds, and they can save you serious energy right now.
Some advantages of LEDs include:
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