Onuma Plant is a 9.5 MW geothermal power plant in Japan, operated by Hokkaido Electric Power Co Inc since 1973. Ranked #15 of 16 geothermal plants in Japan, it contributes 1.26% of the country'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 Onuma 11.6 times smaller. Nearby plants include Kakkonda (80 MW, Geothermal), Sumikawa Akita (50 MW, Geothermal), and Shizukuishi (24.8 MW, Solar). The plant is located in the Hokkaido region, approximately 50 km from Hakodate.
53 years old
Japan, Asia
- 479. largest of 662 plants in Japan
- #24,904 worldwide by installed capacity
- #196 of 215 Geothermal plants worldwide
53 years in operation
Geothermal fleet average: 26.9 years
HOKKAIDO ELECTRIC POWER CO INC operates 8 plants totalling 322 MW
15 plants within 100 km, 2,868 MW combined
Location
Zero Direct Emissions
Onuma Plant is a geothermal power plant producing approximately 67 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
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