Basically, Brings power to the world that doesn’t work in the first place.
Putting light switches on walls presuming that wouldn’t work at first or the first couple of days would work. in general having copper wires throughout houses to different appliances. and they won’t work if there isn’t power in the grid.
also having a whole power plant that has it’s own way of producing power from solar power, to coal, oil, or even nuclear.
I also think that would make it where there could be a fun new Building to explore that i could imagine would have an excess of robots and shocker zombies wandering about.
Another thing would be more electronic craftables like plastic coated wires so you don’t electrocute yourself.
Another thing about power plants i think would be is some sort of explanation on why the power went out in the first place like if it just simply ran out of fuel, somethings are broken, or it simply blew up like nuclear plants tend to after an apocalypse.
on the last note i could imagine power plants would be relativley huge like 10 by 10 tiles are the power plant grounds to have a nice exploration in or smaller plants 5 by 5. in the case if it would be a solar power plant i could see it taking up a bit more room cause of all the panels.