Stock photography, photos: wind energy production Stock photos of wind energy production Photograph: © Esa Hiltula Click for a larger image and more information Keywords associated with this stock photo: wind, energy, production, windmill, turbine, generator, wind, electric, electricity, power, station, blade, pole, mast, blue, white, sky, snow, winter, cold, propellor, propeller, eco, friendly, environment, environmental, green, alternative, technology, industry, business, Hailuoto, Finland, Europe