World Power Plants

Tambara Dam1,200 MW Hydroelectric

HydroRenewableVerified: Feb 2026

The Tambara Dam is a prominent hydroelectric power facility located in Japan, with a capacity of 1200 MW, making it a crucial contributor to the nation's energy generation landscape. Operated by TEPCO Renewable Power, this power plant capitalizes on hydroelectric technology, utilizing the flow of water to generate electricity through its dam infrastructure. The facility was commissioned in 1981 and is situated at the coordinates 36.7747° N and 139.0630° E, in an area known for its rich water resources and topography conducive to hydroelectric power. The Tambara Dam plays an essential role in Japan's energy mix, especially in the context of the country's post-Fukushima energy policies, which emphasize the need for reliable and sustainable power sources. By harnessing renewable hydroelectric energy, the Tambara Dam not only supports local energy demands but also contributes to Japan's overall objectives of reducing dependence on fossil fuels and minimizing greenhouse gas emissions. Its operational capabilities ensure a steady supply of electricity, which is vital for both urban and rural areas, particularly in a nation where energy security is of paramount importance. The dam's significance extends beyond mere energy generation; it also embodies Japan's efforts toward innovation in renewable technologies and environmental stewardship. As part of TEPCO's commitment to a sustainable future, the Tambara Dam exemplifies how hydroelectric power can serve as a backbone for a cleaner energy system, significantly influencing Japan's transition toward a more sustainable energy future.

Capacity
1,200 MW

1.20 GW

Commissioning Year
1981

45 years old

Owner
TEPCO Renewable Power
Location
36.7747°, 139.0630°

Japan, Asia

Context & rankings
  • 99. largest of 662 plants in Japan
  • #1,870 worldwide by installed capacity
  • #241 of 8,493 Hydroelectric plants worldwide
  • 0.35% of the installed capacity of Japan
Age & fleet comparison

45 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

TEPCO Renewable Power operates 4 plants totalling 4,620 MW

Regional density

49 plants within 100 km, 17,974 MW combined

Nearest plant: Tamahara (3.6 km)

Data provenance

Source: Wikidata

Location

Coordinates:: 36.774700, 139.063000
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Tambara Dam is a hydro power plant producing approximately 4205 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

Tambara Dam: A Key Hydro Power Plant in Japan

The Tambara Dam, located in Japan, is a significant hydroelectric power plant with a capacity of 1200 megawatts (MW). Commissioned in 1981, it is owned and operated by TEPCO Renewable Power, a subsidiary of Tokyo Electric Power Company Holdings, which is one of the largest utility companies in Japan. This facility plays an essential role in Japan's energy sector, particularly in the promotion of renewable energy sources to meet the country's growing demand for electricity while reducing greenhouse gas emissions.

Hydropower is a renewable energy source that harnesses the kinetic energy of moving water to generate electricity. The Tambara Dam utilizes the flow of the river to turn turbines, which converts the mechanical energy into electrical energy. This process not only provides a steady and reliable source of power but also contributes to grid stability and energy security. As a clean energy source, hydropower generates electricity without the direct emissions associated with fossil fuels, making it a crucial component of Japan's strategy to transition towards a more sustainable energy future.

The environmental impact of the Tambara Dam is multifaceted. On one hand, it provides a renewable energy source that helps mitigate climate change by reducing reliance on fossil fuels. On the other hand, the construction of large dams can disrupt local ecosystems, affect fish migration patterns, and alter water quality and flow. In the case of the Tambara Dam, efforts have been made to minimize these impacts, including implementing fish ladders and other technologies to support aquatic life. Additionally, the dam plays a role in flood control, helping to manage water levels and reduce the risk of flooding in downstream areas.

Regionally, the Tambara Dam is vital for local communities, providing a significant portion of the electricity consumed in the surrounding areas. Its large capacity allows it to supply power not only to nearby towns and cities but also to contribute to the national grid, supporting energy needs across Japan. The dam's presence creates economic opportunities through job creation in both its operations and maintenance, as well as in ancillary industries such as tourism and recreation.

Overall, the Tambara Dam exemplifies the balance between energy production and environmental stewardship. Its role in Japan's energy sector highlights the importance of transitioning to renewable energy sources, ensuring a sustainable and resilient energy future for the country. As Japan continues to navigate its energy challenges, facilities like the Tambara Dam will remain crucial in providing clean, reliable power to meet the demands of its population.

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.