Go Fly a Wind Turbine

http://online.wsj.com/article/SB10000872396390444230504577617971067036752.html?mod=WSJ_hpp_sections_tech

As wind powers an increasing amount of electricity generation, entrepreneurs are hoping to replace modern windmills with a high-tech version of an even older technology: kites.

Winds are stronger and more consistent at higher altitudes, but building a 100-story-tall turbine isn't cost effective. So engineers are working on using kites to send aloft power generators that create energy when mounted rotors are spun by the wind; they transmit electricity through the cables that tie them to the earth as a string tethers a child's kite.