Sunday, February 13, 2005

The Dark Side Of Lighting

From the folks at REPP (Renewable Energy Policy Project):
How much do you think it costs to have one 100 watt light bulb on? If left on 24/7 it probably costs about $85 dollars a year! Now, add up all your lights. If you were using a Florescent light instead the cost would be about $17, or a $68 savings per light.

“(I)t doesn't cost a whole lot of energy to have a light bulb turned on. A 100-watt bulb, in a home paying about 9 cents per kilowatt-hour, costs about a penny an hour to operate. But leave that bulb on needlessly for 12 hours a day and you just spent an extra $3.50 or so a month for that bulb—about $40 per year. And how many light bulbs do you have in your house right now? Count them—I'll bet your surprised at how many there are. That penny an hour for one bulb can quickly become hundreds of dollars per year for all the bulbs in your home.”

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