But I meant the national security considerations. While you would discount the bogeyman terrorist, the military will not only concern itself with terrorism, but a military attack, too. A centralised electricity generation system will already make a strategic asset, something the military will see necessary to secure (or attack). Furthermore, nuclear plants aren't just bigger targets than the average fossil fuel power plant: while the latter can be up and running half-repaired after the replacement of some pipes and welding-work (see Iraq or Yugoslavia), for a nuclear plant, the perfect replacement of a hundred essential parts would be needed in the best case, and it would stay a radioactive ruin in the worst case. So until we don't abolish armies and wars altogether, nuclear power plants will stay a national security issue.

Regarding 2, that's an answer about ownership and half of regulation, but what about organisation, and how would public regulation be organised?

_{*Lunatic*, n.
One whose delusions are out of fashion.}