Nakoso power station
|This article is part of the CoalSwarm coverage of Japan and coal.|
Nakoso power station is a 1,975 megawatt (MW) coal-fired power station in Fukushima, Japan.
The map below shows the plant in Fukushima prefecture.
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.
- 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 - Retired in 2020 (Subcritical)
- IGCC Unit - 525 MW - 2021
Proposed IGCC Unit
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.
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.
Financing of IGCC Units
In September 2016, a combined financing agreement was closed for the Hirono and Nakoso IGCC units. US$2,755.05 million in loans was provided for the two units, assumed to be split on a 50:50 basis, by Mitsubishi UFJ Financial Group, Development Bank of Japan, Sumitomo Mitsui Banking Corporation, Toho Bank, Nippon Life Insurance, Aozora Bank, Joyo Bank, Chiba Bank, Chugoku Bank, Meiji Yasuda Life Insurance, Resona Holdings, Yamagata Bank, Bank of Fukuoka, Yamaguchi Bank, Bank of Iwate, Aomori Bank, North Pacific Bank, Akita Bank, and Shizuoka Bank.
The “No Coal, Go Green! Project” released a report in March 2020 highlighting why the Mitsubishi Company that is powering the Nakoso plant should stop investing. One major reason cited was that the Nakoso power plant in the Fukushima Prefecture would increase global CO2 emissions and be inconsistent with Paris Agreement climate policies.
Project Details for IGCC Nakoso
- Sponsor: Nakoso IGCC Power GK
- Parent companies: Mitsubishi (50%), Nakoso IGCC Management (40%), TEPCO (5%), Joban Joint Power (5%)
- Location: Sanuka-cho - Iwaki City, Fukushima, Japan
- Coordinates: 36.9128, 140.8128 (exact)
- Status: Operating
- Gross Capacity: 525 MW
- Type: IGCC
- In service: 2021
- Coal Type:
- Coal Source:
- Financing: US$1,377.525 million in debt from Mitsubishi UFJ Financial Group, Development Bank of Japan, Sumitomo Mitsui Banking Corporation, Toho Bank, Nippon Life Insurance, Aozora Bank, Joyo Bank, Chiba Bank, Chugoku Bank, Meiji Yasuda Life Insurance, Resona Holdings, Yamagata Bank, Bank of Fukuoka, Yamaguchi Bank, Bank of Iwate, Aomori Bank, North Pacific Bank, Akita Bank, and Shizuoka Bank.
Project Details for Units 7-10
- Sponsor: Joban Joint Power Co
- Parent companies: Tohoku Electric Power (49.11%), Chubu Electric Power (24.55%), TEPCO (24.55%), Joban Kosan (0.62%), Furukawa (0.59%), Nanyu Corp. (0.26%), Tobe Corp. (0.18%), Nisshin Shoji (0.08%)
- Status: Units 7-9: Operating; Unit 10: Retired
- Gross Capacity:
- Unit 7 - 250 MW
- Unit 8 - 600 MW
- Unit 9 - 600 MW
- Unit 10 - 250 MW
- Type: Units 7, 10: Subcritical; Units 8, 9: Supercritical
- In service: Unit 7: 1970; Units 8-9: 1983; Unit 10: 2013 (retired 2020)
- Coal Type: Units 7-9: Bituminous
- Coal Source:
Articles and resources
- "Coal-Fired Plants in Japan," Industcards, accessed Feb 2016
- "設備概要," Joban Power, accessed March 2016
- "Nakoso power station Japan," Global Energy Observatory, accessed October 2014
- "2 new coal-fired power plants in disaster struck Fukushima," Sekitan, Dec 11, 2013.
- “Operation and Construction Plans of Coal-Fired Thermal Plants in Japan,” Kiko Network, 17 October 2014
- "Tepco Mitsubishi and Joban Joint Power partner on low-emission coal power projects in Japan," Power Technology, Aug 21, 2015
- "大型石炭ガス化複合発電設備実証計画（勿来）／福島復興電源コンソーシアム／福島県いわき市," Kiko Network, accessed May 2017
- "大型石炭ガス化複合発電設備実証計画（勿来）／福島復興電源コンソーシアム／福島県いわき市," Kiko Network, accessed May 2020
- Nakoso IGCC Plant Completed, the World's Largest Plant began Operations on April 16 in Japan, Mitsubishi Power, Apr. 19, 2021
- "Preview of Fukushima IGCC Power Plants (1080MW) | Transaction | IJGlobal". ijglobal.com. Retrieved 2020-11-13.
- "Why Investors should divest from Mitsubishi Corporation", No Coal, Go Green! Project, March, 2020.