I'm pro nuclear power in general, but evidence suggests it's not a very good fit for California. http://earthquake.usgs.gov/earthquakes/recenteqscanv/ http://www.energy.ca.gov/nuclear/california.html
http://finger-tree.blogspot.com/2009/11/floating-nuclear-pla...
Earthquakes are just another engineering challenge, and one that nuclear engineers have been dealing with successfully for decades now.
Personally, I think that probably the thing to do is work on power lines that can efficiently carry vast amounts of power long distances, and build nuke plants in places that are less crazy politically than California. Reduced earthquake likelihood would be a very nice side-benefit.
(I know this thread is dead, but I figured you should get an answer anyway.)
(Definition of happy death spiral: http://lesswrong.com/lw/ln/resist_the_happy_death_spiral/ . Does anybody have a more common synonym for this that wouldn't require explanation? Links are a little awkward on HN.)
I just re-evaluated my risk tolerance in the wake of this whole gulf thing. Anyways happy death spiral is a great way to put it -- I kind of view my past feelings about it through that lens.
About California's only hope is mass nuke building before it's too late.