Big money players such as Google are investing in it.
Magenn power claims we can power the world 100 times over with the power of high altitude winds.
Joby energy with a 1-Megawatt version planned we only need 2000 to equal the power of the Hoover dam and we need 7,500 Hoover dams to power the world.only 15,000,000 units each producing 1 megawatt to power the entire planet .
Ampex power has a design that uncoils a tether from the ground to create power they also have a goal of 1Mw by 2013.
Sky windpower boldly claims they will create power for around 2 cents per kilowatt hour.
Makani looks great as well and as websites go theirs really pops.