Google has acquired green-energy company Makani Power, makers of an airborne wind turbine capable of generating power.
Google Acquisition Eyes Kite Power, Flying Wings
Makani Airborne Wind Turbine
All Flight Modes of the Makani AWT
Makani Power, Autonomous Power Generation, July 8, 2011
Makani Power, 2012 Testing Program
The Makani Airborne Wind Turbine