http://www.makanipower.com/

Makani Power is developing Airborne Wind Turbines (AWT) to extract
energy from powerful, consistent winds at altitude. Makani AWT's will produce
energy at an unsubsidized real cost competitive with coal-fired power plants,
the current benchmark of the lowest cost source of power.

This website highlights the rigorous small-scale testing program Makani has
undertaken to demonstrate core functionality and validate performance
expectations for the M1, Makani’s first utility-scale 1 MW system.

Click Concept and Fundamentals:
http://www.makanipower.com/concept/fundamentals/

Thanks to Josh Kennedy