As of September 1, 2025, 165 units are in operation, unchanged from the previous month.

Operating (including 6 mothballed units): 165 Units
Planned (including under construction): 1 Units
Retired: 11 Units

[Information about coal-fired power plant]

• Sumitomo Osaka Cement Ako Factory (coal, 102,500kW)
  Sumitomo Osaka Cement announced that it will suspend operations at the coal-fired power plant at Ako Factory (began operation in April 1997) as of March 31, 2026.
  Sumitomo Osaka Cement PR (written in Japanese）

[Information other than coal]

• On August 1, Yonago Biomass Hatsuden Godo Kaisha Plant submitted a notice of discontinuation of operation of its biomass power plant. That plant had been suspended since a fire accompanied by an explosion in September 2023, and a formal notice of decommissioning has now been submitted.
  Yonago Biomass Hatsuden Godo Kaisha PR (written in Japanese）
  Kansai Electric Power’s announcement （PDF）
• EIA: Toyama Shinko Thermal Power Station Unit 2
  Hokuriku Electric Power has begun public viewing of the Environmental Impact Assessment Scoping Documents for the construction plan of the Toyama Shinko Thermal Power Station Unit 2 (600MW) in Imizu City.
  Hokuriku Electric announcement (written in Japanese）
• EIA: Sakaide Thermal power Station Unit 5
  Shikoku Electric Power has begun public viewing of the Environmental Impact Assessment Scoping Documents for the construction plan of the Sakaide Thermal Power Station Unit 5. This plan is adding an approximately 600MW LNG-fired combined cycle turbine to its Sakaide Thermal Power Station.
  Shikoku Electric announcement (written in Japanese）

*The full database can be downloaded in Excel format on this page.
* Click here (PDF) to download a summary of Japan’s coal plant data.