Paul Gipe’s website [1] is always worth checking out when it comes to unusual wind turbine designs. He knows a ton about the history of wind energy, and lots of

Paul Gipe’s website [1] is always worth checking out when it comes to unusual wind turbine designs. He knows a ton about the history of wind energy, and lots of things have been tried before. And this NREL report [2] is also relevant. It reviews a number of rooftop wind projects. None of them met their energy goals. And the report also recommends sticking with 3rd party certified horizontal axis wind turbines (but those still underperformed because rooftops are not great for wind energy…). [1] https://wind-works.org/wind/small-wind/rooftop-and-urban-wind/ https://wind-works.org/wind/small-wind/rooftop-and-urban-win... [2] https://www.nrel.gov/docs/fy16osti/65622.pdf https://www.nrel.gov/docs/fy16osti/65622.pdf