ανεμόμυλοι, ενέργεια, άνεμος, τουρμπίνα, αιολικό πάρκο, ηλεκτρική ενέργεια, εξουσία, περιβάλλον, ανανεώσιμος, βιώσιμος, αποδοτικότητα
Public Domain
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