I’ve seen wind turbines from a distance, and they looked big, but I had no idea how big they were until I was as the State Fair (Minnesota) last year, and saw a single blade, mounted vertically like an enormous sculpture, extending gracefully so high in the sky that passing comets and asteroids were getting stuck on it.
Then, just a few weeks later, I was driving from the cabin to Grand Rapids, MN, to give a talk, and came across a convoy of trucks holding wind turbine parts. Six or seven trucks, each carrying some huge part of a wind turbine installation, were pulled off to the side of the road taking up most of a small town (I think the drivers were getting coffee).
Page 3.14 has a post linking to Sb Germany with a couple of amazing videos of what happens when wind turbines break.
As Christian Reinboth reports on ScienceBlogs.de, at his energy blog Frischer Wind (“Brisk Wind”), unusually high winds in Denmark on Monday tore the rotor from a turbine on a wind-power farm in Hornslet. The turbine failed spectacularly, exploding mid-spin and scattering parts across the landscape below.
Here is one of the videos:
The other is here, at Frischer Wind, das blog zur Energiewende. Go have a look!