Rather than build farms of towering wind turbines in rural areas, some companies are designing "micro," or small-scale, turbines that fit on top of buildings. The idea is to generate electricity from wind in urban or suburban settings.
The turbines look like large fans in square housings. They are specifically designed for placement on the top of steel-reinforced, flat-roofed commercial buildings. The turbines can be lined up next to each other to aggregate power generation, and the fans will spin even in a very slow wind of a few miles an hour.
The company has set up a few beta sites to test various factors, including its cost-effectiveness, the amount of noise it generates, and the potential impact on birds and bats.
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