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 356- to 520-megawatt (MW) coal-fired power station in Shikoku, Japan.[1][2]

The number of remaining coal boilers and coal power capacity may be uncertain.


The satellite photo below shows the Daio Paper Mishima Mill in Shikoku, Japan.

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Background on Plant

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.[3]

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.[4]

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.[5]

Project Details

  • Sponsor: Daio Paper
  • Parent Company: Daio Paper
  • Location: Shikoku, Ehime, Japan
  • Coordinates: 33.98952, 133.55120 (exact)
  • Status: Operating
  • Capacity (in service): 356 MW[1] to 520 MW (uncertain)
    • Unit 6: 73 MW (1973)
    • Unit 7: 73 MW (1974)
    • Unit 9: 30 MW (1960)
    • Unit 12: 89 MW (1989)
    • Unit 13: 91 MW (1992)
  • Type: Subcritical
  • Coal Type:
  • Coal Source:
  • Source of financing:

Articles and resources


  1. 1.0 1.1 Map & Data, Japan Beyond Coal, accessed January 2022
  2. 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)
  3. Key Locations, Daio Paper Corporation, accessed January 2022
  4. 三島工場 MISHIMA MILL, Daio Paper Corporation, accessed January 2022
  5. Fourth Medium-term Business Plan, Daio Paper Corporation, May 27, 2021

Related GEM.wiki articles

External resources