if the need for capacity is there, and if the market will sustain it
Those are big
if's
If the price for natural gas doubles .... and
if the carbon emission standards are changed to not exclude nuclear ... then we will have nuclear again. But not until that happens.
States where they are anti nuclear, don't credit [lack of] carbon emissions from nuclear, and don't allow recovery of costs (like California and New York*)... there will be no nuclear. -- Not just NEW nuclear... They will likely close down established nuclear.
States where they are pro nuclear, credit [lack of] carbon emissions from nuclear, and allow recovery of costs (like the Carolina's)... there will be limited nuclear.
Only the market will dictate change. When it is cheaper to burn gas, then they will burn gas (present). When it was cheaper to burn coal, that's what they did (past). If it becomes cheaper to burn Uranium again, then that is what they will do. But no amount of logic, science, or wishful thinking will change the market.
* The exception being perhaps Indian Point, it will likely stay open regardless of the climate.