Total installed hydro capacity in Japan is about 49,050 MW. Of this total, 27,470 MW is pumped storage, which puts Japan second in Asia after China. Three major pumped storage plants are also under construction and are soon to be commissioned. Japan is aiming to double generation from renewables to become more self-sufficient. Generation from solar PV has grown by a factor beyond 25 since 2011. This increases demand for energy storage requirements. Although the sites for large-scale hydropower are already utilized, some interesting opportunities for small hydropower do exist.