Japan

Midono — 245 MW Hydroelectric

Hydroelectric Renewable Verified

Midono is a 245 MW hydro power plant located in Japan. View location, capacity, and technical details.

Capacity
245 MW

Installed

Commissioned
1997

Year online

Owner
Tokyo

Operator

Location
36.15, 137.75

Coordinates

Insights

#207
largest in Japan
#1,264
largest Hydroelectric worldwide
#6,767
largest worldwide
1997
13 yrs newer than avg
24
operated by Tokyo
33
plants within 100 km

Technical Details

Fuel Type
Hydroelectric
Capacity
245 MW
Commissioned
1997
Status
Operational
Owner
Tokyo
Country
Japan
Coordinates
36.154, 137.746

Carbon Footprint

Annual CO₂
20,604 t

tonnes / year

Lifetime CO₂
1,648,282 t

over ~80 yrs

Intensity
24 g

Est. gCO2/kWh

Annual emissions equivalent to

4,479
cars per year
2,747
homes per year
936,524
trees to offset

Renewable source — life-cycle emissions only (materials/construction), no direct combustion. Open calculator

Nearby Plants

About this plant

Ranked as the 209th largest power generation facility in Japan, Midono stands out not just for its capacity of 245 MW, but also for its significant role within the local hydroelectric landscape. This facility is classified as the 44th largest hydro plant among 90 in the country, underscoring its contribution to Japan’s diverse energy portfolio. While Japan’s energy profile is heavily influenced by nuclear power, which comprises a dominant share of the national capacity of 357,453 MW across 664 plants, Midono plays a vital role in the hydropower sector, contributing approximately 0.07% to the national capacity.

Midono utilizes advanced hydroelectric generation technology, relying on the natural flow of water to produce electricity. The facility is part of a region rich in hydro resources, notably surrounded by larger plants such as the Shin Takasegawa and its pumped storage counterpart, both boasting a substantial capacity of 1,280 MW each. Nearby, Azumi adds another 623 MW of hydro capacity, while solar energy is represented by the Suwa and Suwa A plants, which provide 46.8 MW and 5 MW, respectively. This notable hydro energy cluster highlights the importance of water resources in the region, positioning Midono as a key player in the local energy mix.

In the context of Japan’s overall energy strategy, which heavily leans towards nuclear energy, the contribution of hydro plants like Midono is crucial for achieving energy diversification and sustainability. With a national capacity average that highlights the dominance of nuclear, the role of hydroelectric power is increasingly significant in balancing energy needs and promoting renewable sources.

Owned and operated by Tokyo, Midono was commissioned to harness the natural hydrological resources effectively. Since its inception, it has been part of Japan’s efforts to enhance energy security and reduce greenhouse gas emissions through cleaner energy production.

Looking ahead, Midono’s impact extends beyond mere numbers; it exemplifies Japan’s commitment to renewable energy and hydroelectric power’s role in a sustainable future. As the demand for clean energy continues to grow, the significance of facilities like Midono in providing reliable and renewable electricity cannot be overstated.

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