If they are spinning there is wind. The turbines are purposely built to be quite tall NOT only so you can put bigger blades on them. The Earth itself causes friction with air moving over it aka wind. As a result wind speeds are lower close to the ground than they are higher up where the influence with friction against the ground is much smaller. It may be wind still on ground level, that doesn’t mean it is also wind still at the height the blades of the turbine are at.
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