One of the big blocks for new advanced reactors is cost from regulation, it looks like projections of changes are happening.
The New Nuclear RenaissanceThe future of nuclear energy in the U.S. is bright.
http://www.usnews.com/opinion/articles/2016-07-11/americas-next-nuclear-power-renaissance-is-here (http://www.usnews.com/opinion/articles/2016-07-11/americas-next-nuclear-power-renaissance-is-here)