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The following table compares the amount of electricity (Watts)required to produce a given amount of light (Lumens) for Incandescent Light Bulbs and Compact Fluorescent (CFL) Light Bulbs.

You will notice that the electricity required by the CFL bulbs is approximately 75% less than that of Incandescent Bulbs.

Fluorescent WattageIncandescent WattageAverage Lumens
4-7 Watts 25 Watts 300
9-11 Watts 40 Watts 450
13-16 Watts 60 Watts 800
18-20 Watts 75 Watts 1,100
22-25 Watts 100 Watts 1,500

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