Lumens-Per-Watt Comparison

Just as an automobile's fuel efficiency is measured in miles per gallon, lightbulb efficiency is measured in terms of lumens per watt—the amount of light produced for each watt of electricity consumed. More lumens per watt means more light for your money.

Chart.

Incandescent

Halogen
A-Line

Mercury
Vapor

Linear
Flourescent

Compact
Flourescent

White
LED

High
Pressure
Sodium

Metal
Halide

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