The leaf geneators, or microturbines on a plastic tree, can be next big thing for generating free electricity everywhere. It just needs a slight breeze and aeroleaf shaped blades to sustain a constant power generation for household.
The employed design is the classical Savonius, it relies on strong drag coefficient and highest efficiencies at even slow windspeed of just 3 m/s. Plus, it is resistant to storms and strongest winds for 25 years. Incredible.
Links
https://www.nbcnews.com/video/the-newest-wind-turbine-looks-like-a-tree-378050627890
