Daio Mishima Mill power station

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Daio Mishima Mill power station (大王製紙 三島工場) is an operating power station of at least 419-megawatts (MW) in Shikokuchuo, Ehime, Shikoku, Japan.


Table 1: Project-level location details

Plant name Location Coordinates (WGS 84)
Daio Mishima Mill power station Shikokuchuo, Ehime, Shikoku, Japan 33.98952, 133.5512 (exact)

The map below shows the exact location of the power station.

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Unit-level coordinates (WGS 84):

  • Unit 12, Unit 13, Unit 6, Unit 7, Unit 9: 33.98952, 133.5512
  • Unit 1: 34.0006, 133.5528

Project Details

Table 2: Unit-level details

Unit name Status Fuel(s) Capacity (MW) Technology Start year Retired year
Unit 1 operating[1] bioenergy - paper mill wastes[2] 63[2] 2020[1]
Unit 12 operating coal - unknown 89 subcritical 1989
Unit 13 operating coal - unknown 91 subcritical 1992
Unit 6 operating coal - unknown 73 subcritical 1973
Unit 7 operating coal - unknown 73 subcritical 1974
Unit 9 operating coal - unknown 30 subcritical 1960

Table 3: Unit-level ownership and operator details

Unit name Owner Operator
Unit 1 Daio Paper Group[3]
Unit 12 Daio Paper Corp [100.0%]
Unit 13 Daio Paper Corp [100.0%]
Unit 6 Daio Paper Corp [100.0%]
Unit 7 Daio Paper Corp [100.0%]
Unit 9 Daio Paper Corp [100.0%]

Project-level captive use details

  • Captive industry use (heat or power): pulp & paper
  • Captive industry: Power


The exact capacity of the power station is uncertain, and is presumed between 356 MW and 520 MW.[4][5]

According to Daio Paper’s English website in January 2022, the Mishima Mill’s total production volume is about 2.10 million t annually, which accounts for about 8% of the total paper and paperboard production in Japan. It includes 17 boilers and 14 turbines, generates 3,540 t/hour of steam aannually, and has 520 MW of power generating capacity.[6]

Another Daio Paper website listed a 500 MW power generating capacity, noting that 100% of the electricity used at the paper mill is covered by private power generation, and surplus electricity is supplied to Shikoku Island through an electric power company.[7]

Carbon neutrality plans

In May 2021, Daio Paper's business plan noted that Daio was planning to reduce CO2 emissions by 46% compared to 2013 by 2030 by installing recycle-based power generation equipment fueled by biomass and waste, and shutting down one coal-fired boiler at the Mishima mill. It was also aiming to achieve carbon neutrality by 2050, shutting down both of the remaining two coal-fired boilers to eliminate coal usage, promoting energy conservation, and steadily expanding source of CO2 absorption through plantation.[8]

Articles and Resources


  1. 1.0 1.1 https://web.archive.org/web/20220528002010/https://www.daio-paper.co.jp/news/%E4%B8%89%E5%B3%B6%E5%B7%A5%E5%A0%B4%E3%83%90%E3%82%A4%E3%82%AA%E3%83%9E%E3%82%B9%E7%99%BA%E9%9B%BB%E8%A8%AD%E5%82%99%E7%A8%BC%E5%83%8D%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6/. Archived from the original on 28 May 2022. {{cite web}}: Missing or empty |title= (help)
  2. 2.0 2.1 (PDF) https://web.archive.org/web/20210923114720/https://www.daio-paper.co.jp/wp-content/uploads/20200706_1.pdf. Archived from the original (PDF) on 23 September 2021. {{cite web}}: Missing or empty |title= (help)
  3. https://web.archive.org/web/20220813211427/http://www.st-times.co.jp/i_news_c/%E5%A4%A7%E7%8E%8B%E8%A3%BD%E7%B4%99%EF%BC%8F%E4%B8%89%E5%B3%B6%E5%B7%A5%E5%A0%B4%E3%81%AE%E3%83%90%E3%82%A4%E3%82%AA%E3%83%9E%E3%82%B9%E7%99%BA%E9%9B%BB%E8%A8%AD%E5%82%99%E3%81%8C%E5%AE%8C%E6%88%90/. Archived from the original on 13 August 2022. {{cite web}}: Missing or empty |title= (help)
  4. Map & Data, Japan Beyond Coal, accessed January 2022
  5. 石炭火力発電所一覧, List issued by the Agency for Natural Resources and Energy, July 13, 2020 (page 8, lines 1-5)
  6. Key Locations, Daio Paper Corporation, accessed January 2022
  7. 三島工場 MISHIMA MILL, Daio Paper Corporation, accessed January 2022
  8. Fourth Medium-term Business Plan, Daio Paper Corporation, May 27, 2021

Additional data

To access additional data, including interactive maps of the power stations, downloadable datasets, and summary data, please visit the Global Bioenergy Power Tracker and the Global Coal Plant Tracker on the Global Energy Monitor website.