World Power Plants

Hirono Thermal Power Station4,400 MW Oil

OilVerified: Mar 2026

The Hirono Power Plant, located in Japan, is an essential facility within the country's energy generation sector, operating with a substantial capacity of 4,400 MW. This facility utilizes a dual-fuel approach, primarily relying on oil while also having the capability to utilize coal, thus enhancing its operational flexibility and reliability. Situated at coordinates 37.2351, 141.0162, the Hirono Power Plant is strategically placed to serve the energy needs of the surrounding region, making it a pivotal contributor to the local grid. The plant's oil-fired generation technology is designed to ensure efficient energy production, with the ability to switch to coal as a secondary fuel, thus providing a buffer during periods of oil supply constraints. As Japan has been undergoing significant changes in its energy policies, particularly after the 2011 Fukushima disaster, facilities like the Hirono plant are crucial in maintaining energy security while the country strives for a diversified energy mix. The operational context of this facility highlights its importance in Japan’s shift towards reducing reliance on nuclear power and fossil fuels, particularly as the nation seeks to incorporate more renewable energy sources into its grid. The dual-fuel capability of the Hirono Power Plant not only ensures a stable supply of electricity but also positions it as a vital asset in Japan's ongoing transition towards a more sustainable energy future.

Capacity
4,400 MW

4.40 GW

Commissioning Year
1970

56 years old

Owner
Tokyo
Location
37.2351°, 141.0162°

Japan, Asia

Context & rankings
  • 11. largest of 662 plants in Japan
  • #121 worldwide by installed capacity
  • #3 of 2,478 Oil plants worldwide
  • 1.28% of the installed capacity of Japan
Age & fleet comparison

56 years in operation

Oil fleet average: 28.7 years

Operator portfolio

Tokyo operates 24 plants totalling 47,440 MW

Regional density

56 plants within 100 km, 38,832 MW combined

Nearest plant: Fukushima Daina (9.1 km)

Location

Coordinates:: 37.235100, 141.016200
Open in Google Maps
Carbon Footprint650 g CO₂/kWh
Annual CO₂
8.77 Mt
13490 GWh/year × 650 g/kWh
Cumulative CO₂
491.05 Mt
Over 56 years of operation
Past Retirement
2000
26 years past expected retirement
Annual emissions equivalent to
1.9M
cars per year
1.2M
homes per year
398.6M
trees to offset

Estimates based on Oil emission factor (650 g CO₂/kWh) and capacity factor (35%). Actual emissions may vary based on operating conditions, efficiency, and fuel quality.

Technical Details

Primary Fuel Type
Oil
Energy Source
Non-Renewable
Country
Japan
Continent
Asia
Data Source
Global Power Plant Database

Hirono Power Plant: A Key Contributor to Japan's Energy Landscape

The Hirono Power Plant, located in Japan, is a significant energy facility with a total capacity of 4,400 megawatts (MW). Owned by Tokyo Electric Power Company (TEPCO), this power plant plays a pivotal role in Japan's energy sector, particularly in meeting the country's electricity demands. As a thermal power plant that primarily utilizes oil as its fuel source, Hirono has been crucial in providing a reliable supply of energy, especially during periods of high consumption and in the transitional phases of Japan’s energy policy.

The Hirono Power Plant is equipped to utilize heavy fuel oil, a type of fuel derived from crude oil that has a higher viscosity and energy density compared to lighter fuels. This makes it suitable for large-scale power generation, as it can produce substantial amounts of energy. The plant's design incorporates advanced combustion technologies that optimize efficiency and minimize emissions. However, the reliance on oil also raises concerns regarding fuel supply security and price volatility, as fluctuations in the global oil market can impact operational costs.

Environmental considerations are an essential aspect of the Hirono Power Plant's operations. While oil-fired power plants generally produce fewer greenhouse gas emissions than coal-fired counterparts, they still contribute to carbon dioxide emissions and other pollutants, such as sulfur dioxide and nitrogen oxides. In the context of Japan’s commitments to reduce its carbon footprint and transition to more sustainable energy sources, the Hirono Power Plant faces increasing scrutiny regarding its environmental impact. The Japanese government has been pushing for a shift towards renewable energy sources, and plants like Hirono may eventually need to adapt to align with national energy policies aimed at sustainability.

Regionally, the Hirono Power Plant holds significant importance. Situated in the Fukushima Prefecture, the plant not only contributes to local energy needs but also supports the broader grid stability for the Kanto region, which includes Tokyo, one of the world’s most populous urban areas. The strategic location of the power plant allows it to help balance supply and demand across the region, particularly during peak usage hours or in emergency situations when other power sources might be unavailable.

In summary, the Hirono Power Plant serves as a vital component of Japan's energy infrastructure, providing substantial capacity through oil-based generation. While it plays an essential role in powering the region and ensuring energy stability, the ongoing evolution of Japan's energy landscape and environmental policies will shape the future of facilities like Hirono, necessitating a shift towards cleaner and more sustainable energy solutions.

JapanEnergy Profile

662
Total Plants
342.8 GW
Total Capacity
GasNuclearCoalOil
Top Fuels

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