Something tells me they aren't actually using that for the power company any more. :-) The one below is actually in use, though. It still has a definitely abandoned feel to it. Whatever it _was_, it has been made into a train stop (the one right by the arch).
I've also got some REALLY good pictures of an abandoned town up in the Black Hills near Rapid City, SD. :-) I've enjoyed looking through some of the pictures here - they're terrific!