William Dussault, a teaching faculty member in electrical engineering and computer science, spoke with CBS58 for their Aug. 1 story “US bans incandescent light bulbs.”
“Incandescent bulbs are only about five percent efficient, so 95 percent of the power that you pump into the bulb goes off as radiant heat,” Dussault said.
Starting Aug. 1, the Department of Energy banned the manufacture and sale of most bulbs that emit less than 45 lumens per watt. This effectively outlaws incandescent bulbs, which provide just 15 lumens per watt. (LEDs provide about 75 lumens per watt.)