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Visitors look at the powerhouse of a wind power station at the HUSUM 2012 Wind Energy Trade Fair in Husum, Germany. The world's largest wind energy trade fair takes place every two years.
Patrick Lux/Getty Images
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People pass by miniature wind power stations during the fair in Germany.
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Visitors stand in front of the hub of the generator of a wind power station.
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Prince Joachim of Denmark tests a blade-monitoring system for wind power plants while attending the trade fair.
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A miniature windmill cabin on display at the world's largest wind energy trade fair.
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Prince Joachim of Denmark receives a LEGO toy windmill from Wolfgang J. Schmitz, president for Central Europe at wind power plant manufacturer Vestas.
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An aerial view of a solar power plant near the HUSUM 2012 Wind Energy Trade Fair. The farm hosts one of the first wind energy plants in Germany, built in 1983.
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A wind enery park is seen near the annual international trade fair.
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