https://interestingengineering.com/energy/bmw-uk-first-bladeless-wind-system
BMW and Aeromine trial the UK's first bladeless wind system at Oxford Plant, advancing clean energy innovation.
Strategically positioned on the edge of a building, facing the prevailing wind direction, the Aeromine system utilizes the building’s structure to accelerate wind flow as it passes over the edge. The system’s vertical airfoils enhance this effect by generating a vacuum behind the central column, drawing air past the propeller to produce power.
Aeromine’s design features no visible moving parts, ensuring silent operation with no noise or vibration and minimal impact on the environment and wildlife.
It still has blades, they're just inside.