Insight - Japan may only be able to restart one-third of its nuclear reactors

TOKYO (Reuters) - Three years after the Fukushima disaster prompted the closure of all Japan's nuclear reactors, Prime Minister Shinzo Abe is moving to revive nuclear power as a core part of the energy mix, but many of those idled reactors will never come back online.

As few as a third, and at most about two-thirds, of the reactors will pass today's more stringent safety checks and clear the other seismological, economic, logistical and political hurdles needed to restart, a Reuters analysis shows.