An LED lighting revolution is underway. LED light bulbs are rapidly increasing in performance capability and decreasing in price. Last year, A19 format LED light bulbs, the common household format, sold in the range of $20 to $60. There was a strong correlation between price and quality. This year, top-of-the-line bulbs, such as the LG bulb, can be purchased for $10.
LED light bulbs have about the same efficacy as compact fluorescent light bulbs (CFLs), 50 to 60 lumens/watt. However, LEDs keep getting better while CFL technology has plateaued. The 7.5W LG bulb emits 485 lumens. This corresponds to 65 lm/W. It’s a 40W equivalent. At the same 485 lumens, the old fashioned 40 W light bulb would offer only 12 lm/W, five times less.
The LG 7.5W LED A19 Light Bulb LB08D830L0A.E50JWU0 in and out of its
packaging (click on image to enlarge).