Generators. Turned some of them on and off to see what happens and the answer is - they turn things on and off. Who knew.

Still better than the basement.. We found some flooded corridors filled with weird ass old weaponry in unbreakable cases, and believe me I fucking tried. A bunch of weird orbs that seemed to fuck people over. A room with a chair in it that makes you hallucinate.

So that's all fun.