Ugh. Well, Makani was the company I was thinking of. They started in 2006, Google bought them in 2013 and shut it down in 2020. Fucking Google…

Yeah, that’s what the folks who designed the Hindenburg thought as well.

That being said, there are American companies that have been working on flying wind turbines for quite a while.

Yes, and it’s easier to cool things on earth. In space, there’s no air to help you cool thinks off, you can only reject heat through radiation. Most spacecraft are carefully designed to reflect heat/light on surfaces facing the sun and radiate heat into empty space from surfaces that are shaded.