Comment by exmadscientist

It really shouldn't be, but part of the site selection process for these things is finding a place with cheap enough power and cheap enough water that you can rip them off by dangling the "jobs!" carrot. So it's not exactly random. And there are enough locations in the US that view providing cheap utilities to their citizens as a benefit (which, when things weren't getting arbitraged on a national scale, was probably a reasonable policy) that they can always find someone.