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Friday, March 27, 2009

How much money will I save per month using a 75 watt lightbulb instead of a 100 watt lightbulb?

With an average use of about 7 hours a day?



1000 watt hours equals 1 kilowat hour. times your rate per kwh.




less than a dollar




only on that light bulb you will save 25% of your bill


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