fact-checkedreputable news agencyproofread Japan, US agree to cooperate on geothermal energy type='text/javascript'> googletag. So far, Japan's geothermal capacity has been underutilized: it has dozens of small power plants run on the steaming hot springs dotted across the country, but together they account for less than 1% of its total power generating capacity. But Japan ranks 9th in installed geothermal power generating capacity, while the U