For what it's worth, I tested the effects of not uninstalling the windmill and solar panel. When I upgraded everything but those two items, I had 100% of unique upgrades done, and X unique upgrades completed. I then upgraded a solar panel, and had 100% of unique upgrades done, and X+1 unique upgrades completed. So you can get 100% without uninstalling the items - but then you haven't actually done 100% of the available upgrades. Given that - Metro, do you still want us to uninstall the items? I think it would be simpler to maybe just declare them off-limits.