> The argument seems to be that VAWTs are somehow positively impacted by wind shadows? I'm totally wild-guessing here, but from the header image it looks that

> The argument seems to be that VAWTs are somehow positively impacted by wind shadows? I'm totally wild-guessing here, but from the header image it looks that they place them in rows with a light offset, with free air-flow channels in-between. Considering the look of the wings, this actually might use the shadow effect to improve the performance, as they role like Tibetan prayer wheels, in succession, where one side is pulled by air going through the channel, while the other half (the one going against the wind direction) is in the shadow which is reducing the negative push.