Because I am obsessive about calculating costs

[joshlamont]

Light Bulb
K-LITE
Phillips 11W
Phillips 10W
GE 13 Watt

Original Price
$0.82
$4.25
$15.97
$14.97
$1.28

Lumens
630
900
830
940
825

Watts
60
14
11
10
13

Life in years (3 hrs/day)
0.91
9.13
22.83
27.40
7.31

Hours
1000
10000
25000
30000
8000

# needed to match longest life
30
3
1
1
4

Kwh per month
5.40
1.26
0.99
0.90
1.17

Comments

[izuko]

1) Glad to see someone measuring by lumens, instead of watts.

2) You forgot to add a row for "expected number of hazmat-team visits."