First in a six-part series about major sources of renewable energy in Japan and the prospects for their future use and development

The disaster at the Fukushima No. 1 power plant has not only demolished the myth that atomic power is safe, it's sparked an unprecedented nationwide debate on the merits of abandoning it for renewable energy sources.

The debate centers around one fundamental question: Is it better to continue to rely on nuclear power or is it time to embrace renewable energies like solar, geothermal, wind, hydro and biomass? Whichever side wins will determine the nature of Japan's energy mix — and its economy — for decades to come.