In real life, the few attacks that have been tried against nuclear power plants have "failed" miserably. [1]

It's not terribly hard to shut one down (or at least not much harder than your typical power plant) but extracting/releasing any radioactive material is very, very difficult.

[1] https://www.forbes.com/sites/michaelshellenberger/2018/07/06...

Even with all that aircraft-impact resistant, highly reinforced containment, crazy off-grid redundant safety systems, and paramilitary guard force a few hundred strong? Honestly I can see how they might be intriguing at first, but after quick consideration I think most attackers would quickly find something easier to hit.