World Power Plants

Kannagawa470 MW Hydroelectric

HydroRenewable

Kannagawa is a prominent hydroelectric power generation facility located in Japan, specifically at coordinates 36.0335, 138.7054, with a capacity of 470 MW. As a hydro power plant, Kannagawa harnesses the kinetic energy of flowing water, converting it into electricity, which contributes significantly to Japan's renewable energy landscape. The plant operates under the auspices of Tokyo, and its generation technology is characterized by the use of dam-based systems that control water flow to maximize energy output. Hydroelectric power is particularly essential in Japan, where the focus on sustainable energy production has intensified following recent energy challenges. Kannagawa plays a crucial role in the local and national grid, providing a reliable and clean source of electricity that helps balance supply and demand, especially during peak consumption periods. The facility aligns with Japan's energy policy goals aimed at increasing the share of renewables in the energy mix and reducing dependency on fossil fuels. By harnessing the power of water, Kannagawa exemplifies the potential of hydroelectricity to deliver sustainable energy solutions while contributing to Japan's commitment to environmental stewardship.

Capacity
470 MW
Commissioning Year
1999

27 years old

Owner
Tokyo
Location
36.0335°, 138.7054°

Japan, Asia

Context & rankings
  • 178. largest of 662 plants in Japan
  • #4,834 worldwide by installed capacity
  • #773 of 8,493 Hydroelectric plants worldwide
  • 0.14% of the installed capacity of Japan
Age & fleet comparison

27 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Tokyo operates 24 plants totalling 47,440 MW

Regional density

38 plants within 100 km, 7,709 MW combined

Nearest plant: Hokuto C (25.3 km)

Location

Coordinates:: 36.033500, 138.705400
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Kannagawa is a hydro power plant producing approximately 1647 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
Japan
Continent
Asia
Data Source
Global Power Plant Database

Kannagawa Hydro Power Plant: A Vital Component of Japan's Renewable Energy Landscape

The Kannagawa Power Plant is a significant hydroelectric facility located in Japan, with a generation capacity of 470 megawatts (MW). Owned by Tokyo Electric Power Company (TEPCO), this plant plays a crucial role in Japan's energy sector, particularly in promoting renewable energy sources and contributing to the nation's grid stability. As Japan continues to transition towards sustainable energy following the Fukushima nuclear disaster in 2011, hydroelectric sources like Kannagawa have gained prominence as safe and reliable alternatives to fossil fuels and nuclear power.

Hydropower is generated by harnessing the energy created from flowing water. In the case of the Kannagawa Power Plant, the facility utilizes the kinetic energy from the natural flow of rivers, converting it into electrical energy through turbines. The technical process involves capturing the water flow through a dam, where it is directed into turbines that rotate and generate electricity. This method of power generation is particularly efficient and has a low operational cost once the infrastructure is established. The use of hydroelectric power is also characterized by its ability to provide a stable and consistent energy output, as water flow can be managed to meet demand fluctuations.

The environmental impact of Kannagawa and similar hydroelectric plants is generally lower compared to fossil fuel plants, as they produce no direct emissions of greenhouse gases during operation. However, the construction and operation of hydropower facilities can have significant ecological implications, including alterations to river ecosystems, impacts on fish populations, and changes in sediment transport. In Japan, rigorous environmental assessment and management plans are implemented to mitigate these effects, promoting biodiversity and preserving aquatic habitats.

Regionally, the Kannagawa Power Plant is strategically important as it supports local energy needs while contributing to the overall energy mix of Japan. The facility helps to reduce reliance on imported fossil fuels, enhances energy security, and provides a cleaner energy source for the densely populated areas of Tokyo and its surroundings. As Japan aims to increase its renewable energy capacity, hydropower plants like Kannagawa are essential for achieving national energy goals, particularly in reducing carbon emissions and fostering sustainable development.

In summary, the Kannagawa Power Plant stands as a key player in Japan's efforts to embrace renewable energy sources. With its substantial capacity, efficient use of hydro resources, and lower environmental impact compared to traditional energy generation methods, it exemplifies the potential of hydropower in contributing to a sustainable energy future for the country.

JapanEnergy Profile

662
Total Plants
342.8 GW
Total Capacity
GasNuclearCoalOil
Top Fuels

See Incorrect or Missing Data?

Help us improve our database by reporting any corrections or updates. Your contribution helps keep our global power plant data accurate and up-to-date.