What is shadow flicker?

“Shadow flicker” refers to the shadows cast by wind turbine blades as they rotate in front of the sun, similar to the shadow cast by a tree blowing in the wind. Very few homes in a project will experience shadowing, and most often no home experiences this effect for more than a few minutes per day, on average. During cloudy days, shadow flicker does not occur.  The project will comply with the Rush and Henry County wind ordinance requirements related to shadow flicker at residences.

Some worry that this flicker can cause seizures in photosensitive individuals. However, according to the Epilepsy Foundation’s research, the rate at which wind turbine shadows “flicker” is far below the frequency associated with seizures.