Lighting Efficiency by Bulb Type


by Steven Davies on Jun 3, 2013 | Views: 59 | Score: 0
1
1879 Incandescent14
Today's Incandescent17
Today's Halogen20
Today's CFL65
Today's LED70
Today's Fluorescent100
Lumens per Watt
Sources: need.org
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Steven Davies
Steven Davies on Jun 3, 2013 1:22 PM said:

Since Edison's 1879 incandescent bulb that achieved 14 lumens per watt, the efficiency of light bulbs has increased to up to 100 lumens per watt for some fluorescent bulbs. More lumens per watt means less energy used.