Renewable Energy Sources/Wind/Wind Turbines/Slavonius Rotors can be safe for birds & bats

17 July 2017 backstage information of a scientist about the website http://cleantechchallenge.be/ which does not show safe Slavonius Rotors
“ I only can see ordinary wind turbines with an horizontal spindle and 3 rotor blades. These constructions are known to kill birds and bats, if erected in areas where these animals do live (which is quite often the case). The longer the blades are, the higher is the potential to harm birds and bats, due to the disc the blades are spinning. Very small turbines of this type with blades not longer then 3 meters may be quite safe for birds, but they also kill bats.
Slavonius Rotors have a vertical spindle and blades directly connected to it. There is not much known about their influence on birds or bats. Since Slavonius Rotors are normally small devices and compact, their impact should be very small. It can be assumed, that they are quite safe for birds and bats.” The website cheantechchallenge is in connection to Vito and McKinsey.
 
http://www.wiwo.de/politik/deutschland/energiewende-windraeder-stehen-still-und-kosten-hunderte-millionen-euro/13515276.html. Operators of wind power plants in Germany receive money, also if they produce superfluous energy which can not be used in the grid, because there is already too much energy in the grid. The Wind power plants’ energy is wasted. This and other strange “things” in this theme caused not only a discussion about the wind turbines, especially in Schleswig-Holstein were the power plants originated, humans protest against these: http://green.wiwo.de/zukunft-der-windkraft-schwimmende-anlagen-und-schaufensterprojekte/