Many so-called pundits, myself included, made predictions about the maximum size of turbines that in retrospect were ridiculously conservative. We have now stopped making such predictions and are happy to be amazed by the engineering achievements of the present.
One useful “back of the envelope” limit is that a turbine blade longer than about 1km would probably buckle under its own weight, so there is still plenty of scope for growth!
Offshore, we are just starting something big.
