Japan

Ōi Nuclear Power Plant — 2,254 MW Nuclear

Nuclear Verified

Ōi Nuclear Power Plant is a 2,254 MW nuclear power plant located in Japan. View location, capacity, and technical details.

Capacity
2,254 MW

Installed

Commissioned
1979

Year online

Owner
Kansai Electric Power Company

Operator

Location
35.54, 135.65

Coordinates

Insights

#38
largest in Japan
#167
largest Nuclear worldwide
#640
largest worldwide
1979
9 yrs older than avg
11
operated by Kansai Electric Power…
41
plants within 100 km

Technical Details

Fuel Type
Nuclear
Capacity
2,254 MW
Commissioned
1979
Status
Operational
Owner
Kansai Electric Power Company
Country
Japan
Coordinates
35.541, 135.652
Wikipedia
Link

Carbon Footprint

Annual CO₂
201,399 t

tonnes / year

Lifetime CO₂
10,069,970 t

over ~50 yrs

Intensity
12 g

Est. gCO2/kWh

Annual emissions equivalent to

43,782
cars per year
26,853
homes per year
9,154,519
trees to offset

Indicative estimate from standard life-cycle emission and capacity factors — not a measured figure. Open calculator

Nearby Plants

About this plant

The Ōi Nuclear Power Plant, located in the Fukui Prefecture of Japan, is a significant facility in the country’s energy sector, boasting a total capacity of 2,254 megawatts (MW). Owned and operated by Kansai Electric Power Company, this nuclear power plant plays a crucial role in providing a stable and substantial portion of Japan’s electricity supply. Since its inception, the plant has been a pivotal player in Japan’s strategy to achieve energy security and reduce reliance on fossil fuels, especially following the aftermath of the Fukushima Daiichi nuclear disaster in 2011, which led to increased scrutiny and debate over nuclear energy in the nation.

The Ōi Nuclear Power Plant primarily utilizes enriched uranium as its fuel source, which undergoes a process of nuclear fission to generate heat. This heat is then used to produce steam that drives turbines, converting thermal energy into electrical energy. The facility consists of multiple reactors, specifically two pressurized water reactors (PWRs), which are equipped with advanced safety systems designed to mitigate the risks of nuclear accidents. These reactors operate under stringent regulatory measures established by the Nuclear Regulation Authority of Japan, emphasizing safety and environmental protection.

In terms of environmental impact, nuclear power plants like Ōi are often viewed as a cleaner alternative to fossil fuel-based power generation. The plant produces significantly lower greenhouse gas emissions during operation, contributing to Japan’s goals of reducing carbon emissions and combating climate change. However, the challenges of radioactive waste management and the potential risks associated with nuclear energy continue to be critical concerns for both the government and the public. The long-term storage and disposal of nuclear waste remain unresolved issues that necessitate careful consideration and planning.

Regionally, the Ōi Nuclear Power Plant is of great significance as it not only provides electricity to the Kansai region but also supports local economies through job creation and infrastructure development. The plant is a major employer in the area, providing direct and indirect employment opportunities for thousands of residents. Furthermore, the economic activity generated by the power plant extends to various sectors, including construction, maintenance, and services, thereby playing a vital role in the local economy.

Overall, the Ōi Nuclear Power Plant exemplifies the complexities and challenges of nuclear energy within Japan’s broader energy landscape. As the country grapples with its energy policy in the wake of past crises, the role of nuclear power continues to be a focal point of national discussions, balancing the need for reliable energy sources with environmental and safety considerations.

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