I don't think the comparison with solar is particularly useful and would always need to be made on a site by site basis. But it is true that some sites have be

I don't think the comparison with solar is particularly useful and would always need to be made on a site by site basis. But it is true that some sites have better wind resource than solar. A better comparison is with the limitations of traditional turbines. Compared to a traditional turbine this design could eliminate shadow flicker, reduce structural loading on the roof, have different safety margins, increase the number of generators that can be placed and reduce visual impact. And they may have found a way to do that whilst maintaining a relatively large swept area. That is key as power output scales relative to swept area rather than height. I am usually sceptical about vertical axis but this seems more interesting than most designs. It could be a good fit for commercial buildings if installation is simple enough. And maybe could be placed temporarily on agricultural land during winter. And you could see the concept being applied in other ways such as with sun shields on buildings.