I just got my first electricity bill. Ohh....so that's what running 4 1080 Ti's 24/7 looks like! Needless to say, I switched away from the tiered power plan to something better suited to my needs. I can crunch like a madman except for a period of 5 hours. I'll see if/how much that helps.
But hey, at least I know it's doing something useful . (although I do shut one card down occasionally to play computer games, which is also useful. :)