|
Lumens |
Typical Product |
Efficiacy
(lumens/watt) |
Est. Annual Energy Use* |
Est. Annual Electricity Cost* |
|
125 |
3
watt CFL |
41 |
5 kWh |
$0.60 |
150 |
3.5
watt LED |
43 |
6 kWh |
$0.70 |
|
185 |
15
watt krypton |
12 |
27 kWh |
$2.93 |
|
210 |
25
watt incandescent |
8 |
46 kWh |
$5.01 |
|
|
ambient
lighting |
|
|
|
|
400 |
9
watt CFL |
44 |
16 kWh |
$1.80 |
450 |
8
watt LED |
56 |
15 kWh |
$1.60 |
|
460 |
40
watt incandescent |
12 |
73 kWh |
$8.02 |
|
500 |
10
watt CFL |
50 |
18 kWh |
$2.00 |
|
|
general
room lighting |
|
|
|
800 |
12.5
watt LED |
64 |
23 kWh |
$2.51 |
|
890 |
60
watt incandescent |
15 |
109 kWh |
$12.03 |
|
900 |
15
CFL |
60 |
27 kWh |
$2.93 |
1,000 |
12.5
watt LED downlight |
80 |
23 kWh |
$2.51 |
|
1,180 |
75
watt incandescent |
16 |
133 kWh |
$15.04 |
|
1,200 |
20
watt CFL |
60 |
35 kWh |
$4.01 |
|
|
suitable for reading |
|
|
|
|
1,750 |
100
watt incandescent |
17 |
182 kWh |
$20.06 |
|
1,750 |
29
watt CFL |
60 |
53 kWh |
$5.82 |
| |
* Estimated annual energy use based on 5 hours per day. Estimated annual energy cost based on electric rate of $0.1099/kWh (Jan 2011 US national average) |
|
|