It's actually renewable-heavy, I don't know the details (which might be important here) but Japan is very rich in wind and water resources, so solar, eolic and

It's actually renewable-heavy, I don't know the details (which might be important here) but Japan is very rich in wind and water resources, so solar, eolic and hydro could be major players. If only there weren't usual typhoons and floods and earthquakes that could make those nonviable (that's why details might be important).