Nuclear might be better and cheaper over it's entire lifecycle; but given that the starting costs are so high, the time to build is so long, and the US has serious problems with cost overruns in public projects, as well as the fickleness of both government and public opinion, I don't expect another plant to be built.
>>jerlam+(OP)
Well we were speaking of costs in a hypothetical future in which regulations are sane. I don’t expect that to happen either but if it did, the economics would work.