Japan:

Geothermal Power: Japan Has World's Third Largest Geothermal Reserves, 60 Percent of Which Can Be Developed (Japan for Sustainability)

Progress of Major Geothermal Power Generation Projects (as of January 10, 2014)
 Source: Japanese Agency for Natural Resources and Energy

The U.S., Indonesia, and Japan stand out among the world's largest holders of geothermal reserves. The installed geothermal capacity in Japan remains less than half that of the other two countries, so the room for development is significantly large. The cost of geothermal power generation is around 10 yen (about 10 cents U.S.) per kilowatt-hour, as low as that of gas-fired power. The relaxation of regulations on Japan's national parks, where geothermal resources are concentrated, has been accelerating.

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