This is so new and cool that a company named Vortex from Spain developed Bladeless Turbines for generating Wind Energy. I came across this for the first time and seems impressive. Bladeless itself will tell you that making these can cut costs and many things. Many advantages when compared to windmills which are presently in the market with large blades.
This videos I found seems to be best to have knowledge of these Vortex bladeless turbines.
Need to know something more. Check out this video.