Japan running with 49/54 nuclear plants for 10 months

Noticeable fact

Today, January 20 2012, I notice that :

• On the 54 Japanese nuclear plants, only 5 are operating.
• This means that, for 10 months now, Japan is running without operating 49 nuclear reactors.
• In the meantime, no more consequent power generation equipment has been setup.

Questions

• Who had think, one year ago that the country would be able to run without them?
• Doesn't it imply that Japan was over-sized regarding power generation?
• Should it be the same in over developed countries ?