FWIW that larger windmills have tips that can go supersonic speeds. That flings ice off possibly miles away, and up into air space where planes prefer to have no obstacles.
Near me in Cohocton, NY there is a large wind farm. Usually about 25% of them have the breaks on due to over-production of electric. Those things are monsters (and small compared to the ones they put in oceans), but you get a sense of scale when they sit up on top of a large hill, and the top half of the blades are in the clouds. Those tips are traveling from 3000' of elevation to 3500' in seconds.
Look up Cohocton, NY windmill images.
