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Sustainable Atlanta Roundtable December 2008

December 5, 2008

This morning I went to Southface’s monthly Sustainable Atlanta Roundtable.  Dr. Marilyn Brown was speaking about the advantages of energy efficiency in our homes versus the building of new coal powered plants.  I have seen her speak before about shrinking the carbon footprint of urban areas and she is fascinating.  I felt like sharing a few of the numbers she was throwing out.  These are not in any type of order, just notes I had:

*1 incandescent lightbulb only uses 3% of the full potential that coal generates (in other words, using electricity to run a lightbulb is wasting 97% of it’s potential power).  CFL’s (compact fluorescent lightbulbs) are 4 times more efficient. 

*The residents of the state of Georgia could save $100,000,000 if every home switched their lightbulbs to CFL’s.  (that’s assuming that the average home has 5 lightbulbs that are used for 5 hours each day).  It also assumes that 30% of those lightbulbs have already been changed out.

*A plasma TV uses 250 watts per day versus a standard TV using 100 watts per day.  Add on the cable box and that is an additional 25 watts.  2 plasmas & two cable boxes use the same energy as a refrigerator; now that’s a lot of energy for something that is turned off for most of the day.

*Once Obama becomes president, his plan is to have a 15% reduction in electric use by 2020.  His plan also calls for 10% of the countries energy supply to come from renewable sources by 2012 and 25% by 2025.

3 Comments leave one →
  1. Adrienne Holmes permalink
    December 7, 2008 9:13 am

    Carson, I think a cool idea would be to give lightbulbs this year in a stocking, with a little note stating the statistic on saving energy. It’s not like anyone needs another fruit cake or gift basket. A

  2. December 7, 2008 10:11 am

    I totally agree, we have been giving them out at caravans and it’s a great idea for the holidays. I think she said one incandescent lightbulb costs $12.00 per year to run versus one CFL which costs like $2.00 per year… that’s a big difference when you add up all the lights in your house, or at least the lamps…

  3. December 19, 2008 12:19 am

    Here is some more interesting news about how the Obama plan might work:

    http://www.sustainword.com/2008/12/18/stimulus-package-may-address-home-energy-use/

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