In the latest released energy plan, Japan has declared that nuclear’s share in it’s power mix would be 20-22% and that of renewable will be 22-24%, with rest being fossil fuel, by 2030. Post Fukushima, Japan had to rely heavily on imported fossil fuel, resulting in an increase in business cost. Now after safety tests and court challenges are over all the nuclear reactors in Japan have restarted.
Japan had earlier declared an addition of 100 GW PV capacity by 2030. It also continues to invest in potential offshore wind to add to its renewable. After 2011 disaster, energy efficiency and savings measures helped Japan in a big way to meet the demand. But of course, addition of nuclear power would ease out the problem of emission and cost involved in fossil fuel.
Current policy plan looks like that Japan likes to meet its emission target through unpopular nuclear power.