Nakoso power station

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{{#badges:CoalSwarm|Navbar-Japancoal}} Nakoso power station is a 1,875 megawatt (MW) coal-fired power station in Fukushima, Japan.

A 540 MW IGCC plant is under construction at the site.


The map below shows the plant in Fukushima prefecture.

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Background on Plant

This plant was originally used to use low-grade local coal in the Joban coalfield with a pair of 35-MW units built in 1957. Three 75-MW sets were added in 1960/61. All five of these units are now closed. The larger units were built to fire heavy oil and some later converted to coal and coal-water mixture.[1]

The existing units consist of:[2][3]

  • Unit 6 - 175 MW - 1966 (oil)
  • Unit 7 - 250 MW - 1970 (Subcritical)
  • Unit 8 - 600 MW - 1983 (Supercritical)
  • Unit 9 - 600 MW - 1983 (Supercritical)
  • Unit 10 - 250 MW - 2013 (IGCC)

Proposed Unit 11

In 2013 Tokyo Electric Power Company (TEPCO) said it is considering partnering with Mitsubishi to build two 500 MW integrated gasification combined cycle (IGCC) coal-fired power stations in Fukushima Prefecture, the area of the Fukushima Daiichi Nuclear Power Plant damaged in the 2011 earthquake. One unit will be in the Hirono area at the Hirono power station, and the other in the Nakoso area. Tokyo Electric Power Company (TEPCO) will operate the Mitsubishi-owned power plants that could be connected to the grid by 2020.[4][5]

In August 2015 a letter of intent (LOI) was signed between TEPCO, Mitsubishi, and Joban Joint Power Co. to develop a 540 MW IGCC plant at the Nakoso power station. It is planned to be operational in the early 2020s. The companies, named the Fukushima Revitalization Power Consortium, also signed an LOI for a 540 MW IGCC plant at the Hirono Thermal Power Station.[6]

The power station is under construction and planned for September 2020.[7]

Project Details for Unit 11

  • Sponsor: Nakoso IGCC Power GK
  • Parent companies: Mitsubishi (90%), TEPCO (5%), Joban Joint Power (5%)
  • Location: Sanuka-cho - Iwaki City, Fukushima, Japan
  • Coordinates: 36.9128, 140.8128 (exact)
  • Status: Construction
  • Gross Capacity: 540 MW
  • Type:  IGCC
  • Projected in service: 2020
  • Coal Type:
  • Coal Source:  
  • Source of financing: Mitsubishi, TEPCO, Bank of Tokyo-Mitsubishi, Development Bank of Japan, Mizuho Bank, Sumitomo Mitsui Banking Corporation, Fukushima's The Toho Bank

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