EnergieKontor who own the wind farm created a community benefit fund and details about it and what can be funded and how can be found here
Welcome to the Windfall page :: Prospects Foundation
I know it sounds strange but if the wind speed is to high the turbines can be damaged and they stop them from running. Like everything they have a design specifications and can only operate within these specifications. I also wonder some days when you see some are stopped and others running.
As far why so many, I would rather see the whole hill covered in them than have a nuclear or even coal fired power station in our back yard. I think they should put a lot more up there.