` :::From what I recall, wider blades (and/or more blades) *would* produce more power, but not much. It is question of optimizing output relative to cost, ie. a compromise, and as such not easily verified by formulae. But since the vast majority of manufacturers chose the 3-blade thinblade model after heavy research, I guess that is the ``best`` solution. But again, not easily verifiable. Enercon has wider blade roots, though. The ``more blades`` issue could probably be verified, similar to helicopter rotors.   `