Lighting Efficiency

The following information has been collected from several sources.
Please E-mail any corrections or additions to me so they can be included.

Type
Lumens Per Watt
Ballast Power Usage
Life In Hours
Notes
LED  
-
Almost forever Efficient for spot lighting
HPS (warm light)
150
  16,00024,000 35w HPS = 100w incandescent
LPS (orange light)        
Mercury Vapor        
Metal Halide
65
  10,000  
Compact Fluorescent
50
2 w
10,000 23w Circline (25w) = 1,150 lumens
T8 32w Fluorescent
45
2 w (electronic)
10,000 2 @ 32w tubes (66w) = 2,880 lumens
T12 40w Fluorescent
30
17 w (magnetic)
8,000 2 @ 40w tubes (97w) = 2,400 lumens
Halogen  
-
  Caution, they run very hot
Incandescent
13
-
1,000 or less Generate more heat than light

Notes