Since nuclear fuel cost is very low and maintenance/lifetime is time based nuclear kWh price will be scaled by inverse of load factor.

So if for example 66% of the time solar+wind+hydro+misc provides enough and nuclear is not needed, nuclear kWh will be triple the price (estimated with historical load factors).

Already at play in Finland a few weeks after the nuclear power plant has been turned on it had to scale back its production to "not loose money":

https://oilprice.com/Alternative-Energy/Nuclear-Power/Finnis...

What will happen in a decade with more and more solar and wind?