Posted on March 1, 2008 by Matt Embrey in Home+Decor

Here’s a quick little cost breakdown to show that besides being more eco-friendly, they are actually cheaper…

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The following table compares 60W Incandescent Bulbs to their equivalent 15W CFL counterpart. The energy cost is based on the DOE 2006 US Average retail cost of electricity per KWh of $0.104.

	Incandescent	CFL Bulb
Life Span	1,000 hrs	10,000 hrs
Energy used over 10K Hrs (KWh)	600	140
Energy Cost of Bulb	$62.40	$14.56
Cost for One Bulb	$1	$4
# of Bulbs used in 10K hrs	10	1
Cost of Bulbs	$10	$4
Total Cost	$72.40	$18.56