Editors note: Developments such as this one may let the country do just fine without the soon-to-retire coal plants. One internet source says a 100W incandescent bulb can produce 1,500 lumens. Hence, 11,000 lumens would have required about 7.3 incandescent bulbs and require 730 Watts. In contrast, the LEDs will use only 16% of the

Windpower Engineering & Development