nostr:npub1hdjy0970y85dw982djnxc3zz9gur6l4r747xyreflnkctk7nmkuqwsck09 So far, my research shows they don’t. They do have motors to turn the upper unit/blades for proper wind direction. They are fairly quiet while turning. There was a documentary in 2010 called “Windfall” that discussed the health issues when wind turbines are placed to close to homes. They seem harmless, but aren’t. I can’t find a trailer for it. The M5M made fun of that film…of course.