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The Incandescent Bulb Will Not Make the Electronic Lighting Era

The table shows the approximate typical output, in lumens, of standard incandescent light bulbs at various powers. As you all know, the lumen values for "soft white" bulbs will generally be slightly lower than for inside frost bulbs at the same power, while clear bulbs will usually emit a slightly brighter light than correspondingly powered standard bulbs.

Comparison of efficacy by power (120 volt lamps
Power (W) Output (lm) Efficacy (lm/W)
5 25 5
15 110 7.3
25 200 8.0
35 350 10.0
40 500 12.5
50 700 14.0
55 800 14.5
60 850 14.2
65 1,000 15.4
70 1,100 15.7
75 1,200 16.0
90 1,450 16.1
95 1,600 16.8
100 1,700 17.0
135 2,350 17.4
150 2,850 19.0
200 3,900 19.5
300 6,200 20.7