Apparently, so I have been told, the lee turbulence can be very high on windy days, so not just the risk of hitting them
If there is much turbulence above the normal at 500ft on a windy day it still shouldn't worry an ultralight approaching from the downwind side as they should see the wind turbines 10 to 15 minutes before they get to them.
Crashed due to Turbine turbulence ! At last a new excuse for piss poor piloting. Go those lawyers.
