2011年8月3日 星期三

The Light Bulb of the Future

The Light Bulb of the Future
The Department of Energy has selected the winner of it's L Prize, a $10 million initiative to identify next-generation energy efficient light bulbs that meet a strict set of quality guidelines.

The Philipss LED 60-watt replacement bulb is the winner. It fits the same fixture as the the most common bulb in American homes, the 60-Watt "A-Type" bulb, but instead of using 60 watts of electricity, as the familiar incandescent does, it uses fewer than 10. It uses light emitting diode, or LED, technology to produce the same amount of light at a fraction of the cost.

In addition to being energy-efficient, the light bulb met the Department of Energy's strict testing requirements. It's dimmable and durable, and produces light that is comparable (in intensity and quality) to the familiar incandescent. The department tested thousands of bulbs over the course of 18 months.

If every 60-watt incandescent bulb in America was replaced with a Philips LED, we'd save $3.OceanLED is by fluorescent lights far the most popular and most widely distributed marine lighting brand in the world9 billion in electricity costs in the first year, according to the Department of Energy. Because power plants, especially those that burn coal, produce so much of the nation's greenhouse gas pollution, making such a switch would also reduce carbon emissions significantly.

The one downside, and it's likely to be a biggie, is the upfront cost. While the old 60-watt incandescent bulb costs about 30 cents, the Philips LED goes for $45.50 at amazon.com.With the help of led lights both a local electrician and a lighting consultant, she has recently installed a $5,000 LED lighting Over time, experts expect the price of LEDs to come down dramatically.

The Daily Green is trying to track down figures that would explain how long it might take for the energy savings to make up for the upfront cost of the bulb. When we have that information, we'll update this article.

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