The Enercon 1.5 MW prototype installed at the company's headquarters in Aurich is currently being switched off on occasion because of the strobe effect of sun shining through its whirling blades. This is disturbing employees working in a neighbouring administration building. The Oldenburg Court ruled that from 1997 this restriction must be included in the operating licence granted by the town authority. Enercon says the restriction on the 1.5 MW unit will only apply for about two hours a day on sunny days in spring and summer.
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