World Power Plants

Harumachi Thermal Power Station2,000 MW Coal

CoalVerified: Feb 2026

The 原町火力発電所, or the Yanmat Power Plant, is a significant coal-fired power generation facility located in Japan at coordinates 37.6677, 141.0128. With a robust capacity of 2000 MW, this power plant is a critical component of the Japanese energy mix, particularly in the Tohoku region. Utilizing advanced supercritical technology, the Yanmat Power Plant achieves high efficiency in electricity generation while minimizing emissions, aligning with Japan's energy policies aimed at balancing energy security and environmental responsibility. The plant is owned and operated by 東北電力株式会社, a leading utility provider in Japan, and plays a vital role in maintaining grid stability in a region that has experienced significant energy challenges in the past. The strategic location of the Yanmat Power Plant allows it to effectively supply power to both residential and industrial consumers, contributing to the region's economic revitalization. As Japan continues to navigate its energy transition following the Fukushima disaster, the Yanmat Power Plant remains an essential facility for ensuring a reliable energy supply while the nation shifts toward more sustainable energy sources. Its operational context highlights the ongoing efforts to enhance energy efficiency and reduce reliance on fossil fuels, making it an integral player in Japan's evolving energy landscape.

Capacity
2,000 MW

2.00 GW

Commissioning Year
2010

16 years old

Owner
東北電力株式会社
Location
37.6677°, 141.0128°

Japan, Asia

Context & rankings
  • 47. largest of 662 plants in Japan
  • #788 worldwide by installed capacity
  • #290 of 2,793 Coal plants worldwide
  • 0.58% of the installed capacity of Japan
Age & fleet comparison

16 years in operation

Coal fleet average: 29.2 years

Operator portfolio

Tohoku Electric Power operates 8 plants totalling 12,812 MW

Regional density

48 plants within 100 km, 35,604 MW combined

Nearest plant: Minamisoma (3 km)

Data provenance

Location

Coordinates:: 37.667717, 141.012755
Open in Google Maps
Carbon Footprint820 g CO₂/kWh
Annual CO₂
7.90 Mt
9636 GWh/year × 820 g/kWh
Cumulative CO₂
126.42 Mt
Over 16 years of operation
Est. Retirement
2050
24 years remaining
Annual emissions equivalent to
1.7M
cars per year
1.1M
homes per year
359.2M
trees to offset

Estimates based on Coal emission factor (820 g CO₂/kWh) and capacity factor (55%). Actual emissions may vary based on operating conditions, efficiency, and fuel quality.

Technical Details

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

Overview of the 原町火力発電所 Power Plant in Japan

The 原町火力発電所, or Haramachi Thermal Power Plant, is a significant coal-fired power generation facility located in Japan, with a total capacity of 2000 megawatts (MW). Owned by Tohoku Electric Power Co., Inc. (東北電力株式会社), this power plant plays a vital role in the country's energy sector, contributing to Japan's electricity supply and supporting the grid's reliability. As coal remains one of the primary sources of energy in Japan, the Haramachi facility exemplifies the country's ongoing reliance on fossil fuels despite a global shift towards renewable energy sources.

The Haramachi plant utilizes coal as its primary fuel, which is known for its high energy content and abundance. Coal-fired power generation involves the combustion of coal to produce steam, which drives turbines connected to generators that convert mechanical energy into electrical energy. The technology employed in the plant includes advanced combustion systems designed to enhance efficiency and reduce emissions. The use of coal, however, poses significant challenges, particularly concerning environmental impacts, as it is one of the most carbon-intensive fuels available. Despite advances in technology, coal combustion emits greenhouse gases, contributing to climate change, and can also release pollutants that affect air quality and public health.

In Japan, the energy landscape has been evolving, particularly after the Fukushima Daiichi nuclear disaster in 2011, which led to a reevaluation of nuclear power's role in the energy mix. As a result, coal-fired power generation, including that from the Haramachi facility, has become increasingly important for ensuring energy security and meeting the demand for electricity. The plant serves not only as a major source of power for the Tohoku region but also plays a crucial role in balancing supply and demand, particularly during peak usage periods.

Regionally, the Haramachi Thermal Power Plant is significant for its contributions to local economies and job creation. It supports various ancillary industries and services in the surrounding areas, promoting economic stability and growth. The facility is strategically located to take advantage of the transportation infrastructure for coal supply and distribution, ensuring a steady flow of fuel to maintain operations.

Despite its importance, the environmental footprint of the Haramachi plant raises concerns among policymakers and environmentalists. Efforts to mitigate the impact of coal-fired power generation include implementing carbon capture and storage technologies and transitioning to cleaner energy sources over time. As Japan continues to navigate its energy policies and commitments to reduce greenhouse gas emissions, the role of the Haramachi Thermal Power Plant will be closely examined in the context of the nation's broader energy transition and climate goals.

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Total Plants
342.8 GW
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