There are many volcanoes, geothermal fields, and hot springs in Japan, all of which have had an intense influence upon the constitution of the Japanese people and the formation of Japanese culture. The Japanese have utilized geothermal energy since ancient times in the form of hot baths. The therapeutic effectiveness of the dissolved constituents in hot spring waters and the relative high temperatures of the waters have been long enjoyed by the Japanese public. The great liking of the Japanese for hot baths has led to the commercial development of lodging facilities and amusement centers at the sites of Japanese geothermal manifestations. Many greenhouses containing cacti and tropical plants are utilizing geothermal energy and have become Sightseeing attractions in these hot spring areas. Although geothermal electric power generation has a history of about 50 years of Research and Development, the utility-scale Use of this energy is very recent. Geothermal power generation has been slowed by economic conditions, industrial structures, and energy policies. In recent years, because of the worldwide energy crisis, geothermal energy has attracted industrial attention as a non-polluting energy resource. In Japan this new source of energy has been included by the Government as a part of its national policy. Following the action of the government, local residents and industrial circles have exhibited deep interest in geothermal energy. Accordingly, geothermal power generation in Japan should greatly expand in the near future