A Wall equipped with a solar panel. Wall with Solar Panel generating 5Kw.
Mods introducing new content into the game.
New ways to deal with enemies, be it attack or defense.
Annoying to have to make sure all of them are in a supply area, and not being able to quick replace them makes it annoying to swap out solar with normal walls.
I also noticed that they don't have any tooltip info about their powergen, health, etc.