These should be heady times for Vestas, a Danish firm that makes more than a quarter of the world's wind turbines. The wind business is booming, and the company said last week that it had swung into profit in 2006, thanks to an 8% rise in revenue. But there is "significant unexploited production capacity", Vestas says, due to shortages of high-quality turbine components. Other companies grumble about a lack of gearboxes and bearings.
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