1 | |
---|---|
1879 Incandescent | 14 |
Today's Incandescent | 17 |
Today's Halogen | 20 |
Today's CFL | 65 |
Today's LED | 70 |
Today's Fluorescent | 100 |
Lumens per Watt
Sources:
need.org
1 | |
---|---|
1879 Incandescent | 14 |
Today's Incandescent | 17 |
Today's Halogen | 20 |
Today's CFL | 65 |
Today's LED | 70 |
Today's Fluorescent | 100 |
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.