The actual output of any Navy reactor type is classified, but it's enough to power a small city. There are several types of reactors also, each with their own capability and output.
Sweden currently has 3 active nuclear power plants with 10 reactors.
There has been a ban on new reactors, and as of 2008, there were 11.(see the related link)
There are over 400 nuclear reactors around the world.
See the list in link below
There are 59 nuclear reactors in France.