Ha! We take that same drive from KY to see the grandkids in Chicago. A couple of weeks ago we noticed the same thing. Strong winds and none turning. Well, there were two turning.
I don’t understand why they can’t just feather the props in high wind to keep their normal speed up. I’m with you. I’d like to know why they have to be shut down completely.
I think someone already said it. LARGE wind turbines work best in steady wind that does not change direction. If it's gusty, or the winds constantly change direction, the entire structure of the wind turbine is at risk.