A strip of UV material on the LEADING EDGE of the wind power blades is the first thing that comes to mind.
I'm always mystified that birds get whacked to death so often by those big wind generator blades.  I'd love it if a relatively easy strip could be painted on those blades - and it could be studied carefully for the potential non-lethal results.  Gee, that would really be great.
Does anyone have a good Audubon Society connection?  I wonder if they're on to this?