Especially considering how blatantly false it is, Japan is literately covered in volcanoes/hot spring sources; hence why Onsen is such a big part of their culture.
https://en.wikipedia.org/wiki/Onsen
My cousin is a Mechanical Engineer with a concentration on renewable energy sources, and while at school for his masters he was telling about his professor he was working under who had his work halted after 3/11 (Tsunami and Fukushima meltdown) on exploring the viability of steam powered turbines to offset energy needs for Nuclear, which by the way at its peak never exceed 30%. I as a anti-nuclear activist was dismayed to hear that.
It was going well with promising leads, apparently he still needed gather like 3 more years of data to present to the Japanese government before he got grants and permission to move forward with projects and proofs of concept. Sadly, it never happened.