LED Usage

The first major usage of LED's outside of electronic panels was in street lights for Red. When the cost dropped enough came the green and yellow. Now there is starting to be some street light LED's, LED's for lights in Cars, and LED's for household usage. The question is how fast will the price drop making them more competitive with the less costly products that have the dominant market share. It seems to be going faster on the drop in prices than I expected, since I saw LED lights for sale in Costco.