http://www.youtube.com/watch?v=RagPPrHUMTY&feature=player_embedded
FloDesign says their new turbine design is way more efficient than open-fan turbines and they just received major venture funding to bring them to market
The FloDesign wind turbines require much smaller blades and are much easier to manufacture and ship . Additionally, they can be placed much closer together than traditional wind turbines and they align themselves with the wind like a kite on a string. These are a few of the technology’s unique benefits.