also: じねつエネルギー
noun
geothermal energy; geothermal power
Refers to heat energy from the Earth's interior, used for power generation or direct heating.
日本は地熱エネルギー資源が豊富だ。
Japan has abundant geothermal energy resources.
地熱エネルギーを利用した発電所が増え
Power plants using geothermal energy are increasing.