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Ever wonder how much money you could save by switching all of the light bulbs in your home or business to compact fluorescent light bulbs? Or what the environmental impact would be?

Take an inventory of the light bulbs in your house, then enter the number of each type of bulb in form below to find out!

Incandescent Bulb Equivalent CFL Savings Quantity

120 Watt Bulb

32 Watt CFL

$

100 Watt Bulb

23 Watt CFL

$

75 Watt Bulb

19 Watt CFL

$

60 Watt Bulb

14 Watt CFL

$

40 Watt Bulb

9 Watt CFL

$

15 Watt Bulb

3 Watt CFL

$

Cost per Kwh:

Savings are based on the lifetime of the CFL bulb.

Energy Savings Formula:

1. Incandescent watts - CFL watts = Energy Savings
2. Energy Savings x CFL life = Watts Saved
3. Watts saved x utility rate = Total Savings

Assumptions

10,000 hours - the typical life expectancy of a CFL bulb.
1000 hours - the typical life expectancy of an incandescent bulb.
$0.0613 - the average residential cost of energy per kilowatt hour (Kwh).

CO2 Savings Formula:
(Incandescent Watts CFL Watts) x life of CFL bulb x 1.45 lbs
1000

Equivalent of CARS taken off of the road Formula:
CO2 Savings x number of bulbs
118,083

Equivalent of TREES planted Formula:
CO2 Savings x number of bulbs
2932