Numbers, numbers everywhere. So what are we to think?

That's the question activists, academics and members of the public are asking as they follow the debate over the next long-term energy plan, which centers on three different basic scenarios for Japan's energy mix in 2030 and, more to the point, what role nuclear power will play.

The three scenarios, which lay out what percentage of the overall energy mix would be nuclear-sourced, are: zero percent, 15 percent or 20 to 25 percent. A final decision by Prime Minister Yoshihiko Noda was to be made by the end of this month, but that's now expected to be delayed by several weeks.