You know? Now that I came back to this game for the update, I never feel like I understand why I would want to build the Windmills when I can build the Solar Panels for more energy generation.
I know in the First game there was a "wind" mechanic where the windmills would go from normal speed, to super fast speed, to slow speed, and while that was cool to see... it absolutely made me never want to build the windmills outside of experimentation.
Maybe it'd be cool if Elevation made a significant impact for the windmills, where placing them high up would make them outperform the Solar panels... idunno.
Still: good luck with the finishing touches. I'm looking forward to 1.0's release!