Onikobe is a 15 MW geothermal power plant in Japan, operated by TOHOKU ELECTRIC POWER CO since 1975. Ranked #13 of 16 geothermal plants in Japan, Onikobe's 15 MW accounts for 1.98% of Japan's total geothermal capacity of 756 MW. The largest geothermal plant in Japan is 八丁原地熱発電所 at 110 MW, making Onikobe 7.3 times smaller. Nearby plants within 50 km include Furukawa (40.3 MW, Solar), Taiwa (28 MW, Solar), and Uenotai (27.5 MW, Geothermal). The facility is situated in Miyagi Prefecture, approximately 350 km northeast of Tokyo.
51 years old
Japan, Asia
Location
Zero Direct Emissions
Onikobe is a geothermal power plant producing approximately 105 GWh of clean electricity per year with zero direct CO₂ emissions during operation.
Lifecycle emissions: ~38 g CO₂/kWh (manufacturing, transport, decommissioning)
Technical Details
- Primary Fuel Type
- Geothermal
- Energy Source
- Renewable
- Country
Japan- Continent
- Asia
- Data Source
- Global Power Plant Database
Nearby Power Plants
Understanding Geothermal Power Generation: An Overview
Geothermal power generation harnesses the Earth's internal heat to produce electricity. This renewable energy source exploits the thermal energy stored beneath the Earth's crust, which can be accessed through geothermal power plants. These plants typically utilize steam or hot water from geothermal reservoirs to drive turbines that generate electricity. The process begins by drilling wells into geothermal reservoirs, often located in tectonically active regions, where the temperature gradient is favorable for energy extraction. The steam or hot water extracted is then channeled to turbines, converting thermal energy into mechanical energy, which is subsequently transformed into electrical energy by generators.
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