[Namrog84]

I don't know how practical they are but I've seen that inflatable flying windmill wind turbine thing that is meant to be 500-1000ft or higher? So doesn't that make the 100-200m a bit low on what altitude we can extract from?

[Qwertious]

The inflatable flying windmill thing isn't particularly efficient, the future high-atmosphere wind energy source is much more likely to be kite-based wind:

https://www.youtube.com/watch?v=vMTchVXedkk

[menacingly]

And I assume that the two systems (upper and lower atmosphere) aren't so isolated from one another that they don't interact