Nuclear power actually does kind of require centralization. You're not going to build a backyard nuclear facility because it just doesn't scale (also your home will be raided by the IAEA and whatever three letter agencies your local government has). Gas comes out of wells, so that's easy to centralize. Both of these can be easily centrally controlled.

Solar panels can be controlled exactly once. As soon as they're in the hands of the end user, they're no longer possible to control.

But even if they were centrally controlled, they're still easy to find attached to mass surveillance devices, from which they can be expropriated popularly.

How quickly would you be dead if you tried to steal nuclear materials?

Yeah, these are very different things with very different authority profiles.