Carnegie's James Acton talks to Al Jazeera and provides his insight on the rebooting of the nuclear plan. Acton said the new Japanese regulator "has done a very good job tightening Japan's regulatory system and insuring that this reactor is ready to be re-started."

"I don't want to claim that Japan's regulatory system is perfect and I wouldn't claim that any regulator anywhere in the world is perfect, and no power source, including nuclear power, is completely safe," Acton added. "But I think I have considerable confidence now that the unit Sendai is ready to be re-started."

Acton concluded that Japan should be investing more than it currently is in renewable energy sources. 

This interview was originally broadcast on Al Jazeera