Incandescent
CFL
Watts
Watts
40
11
60
15
75
20
100
25
150
40
Cost Comparison: May change depending on Brand
Incandescent CFL
Watts:
75w 20w
Rated Lamp life
750 hours 10,000
hours
# lamps used over 10,000 hours:
13
1
Energy used over 10,000 hours
750 kWh 200 kWh
Cost per kWh 5.9 cents
5.9 cents
Electricity cost per 10,000 hrs
$ 44.25
$ 11.80
Cost per Bulb
$ 0.75 $ 7.00
Bulb cost per 10,000 hours $ 9.75 $ 7.00
Total Life cycle cost
$ 54.00 $ 18.80