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Did the CFL thing 3 or 4 years ago. Have about 95% CFL now. Oven, refridge, hood and a couple special fixtures in the bathroom are still incandescent. I am saving 30%...documented for over 3 years. I burn about 1300 kwh/month now on average down from 1700+ or so. I plotted it up every month for 3 years. Peak usage was about 2500 when the AC season and I had incandescents.
Out here we have a delivery charge that is as much as the electricity itself so it really pays. We are about 25 cents/KWH net out here. it was as high as 35 but it has fallen recently.
If you just change the bulbs that are on all the time in your house (kitchen, livingroom, etc) You will see a very noticeable difference in your power consumption.
BTW the bulbs they make today are much better than the original cfls. Longer term we are moving to a LED technology.
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