I am not sure what you mean "if we kept going with nuclear". We are keeping going with it. It is a continued disaster. The last plant being built, two reactors at Vogtle are now estimated to cost over 25 billion, a massive overrun over an original estimate of 14 billion. That construction already caused the bankruptcy of one of the builders (Westinghouse), massive losses at another (Chicago Bridge and Iron). Eventually Chicago Bridge and Iron was acquired at depressed valuation by McDermott, but the valuation was not depressed enough because McDermott itself declared bankruptcy last year.
Just last month there was another 3 month delay announced at Vogtle. This will certainly increase costs even more.
There is also the VC Summer plant that was recently cancelled after massive delays and cost overruns. That plant was also partially to blame for Westinghouse's bankruptcy.