Interesting links! Spacing and layout are obviously more dimensions that can be optimized. The blades in the original article are 118m long so they would have

Interesting links! Spacing and layout are obviously more dimensions that can be optimized. The blades in the original article are 118m long so they would have a diameter of 236m, and according to your first link the "usual" spacing is 7x the diameter so they'd need to be at least 1.6km apart?