[gregbot]

Who cares? Those blades and that concrete are totally inert and just sit in the ground after their useful life. The ground already has lots of rocks in it.

[Saline9515]

It defeats the "renewable" designation, since it is quickly consumed and thrown away. Compare this with hydropower, where a dam can last centuries.

[nasmorn]

But if you repower the wind mill, the foundation can serve for the next turbine