This Wind Cube turbine from Green Energy Technologies is clearly too large for an individual home (see the truck for scale). But at 50 kilowatts of capacity, it's still considered small wind by the American Wind Energy Association, which said small wind grew 15 percent last year. These machines are designed for commercial customers in urban areas. The idea is to create a wind tunnel through the enclosure to concentrate the wind going past the wind mill so that it produces more electricity. It's one of a handful of companies, including Flodesign Wind Turbines and Optiwind, which have designs to concentrate wind to increase the speed.
See related story: "Good data needed for small-wind turbines to spin"
May 12, 2010 8:22 AM PDT
Photo by: Green Energy Technologies
| Caption by: Martin LaMonica
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