Slow Chat II

From the website:

  • All generators are at ground level, no cranes required — (Rim Driven)

Other rim driven wind turbines has been evoked, for example here.
Some direct links are mentioned below.

BarberWind:

Keuka:
https://www.researchgate.net/publication/269047357_Near-Wake_Flow_Simulations_for_a_Mid-Sized_Rim_Driven_Wind_Turbine