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- Mid-and-Long-Term Roadmap towards the Decommissioning of TEPCO's Fukushima Daiichi Nuclear Power Station Units 1-4
Mid-and-Long-Term Roadmap towards the Decommissioning of TEPCO's Fukushima Daiichi Nuclear Power Station Units 1-4
- What's New
- Special Page explaining ALPS Treated Water
- Current Status of Fukushima Daiichi NPS
- The Mid-and-Long term Roadmap
- Cooperation with IAEA
- Countermeasures to Manage Contaminated Water
- Environmental Monitoring
- Efforts made for decommissioning
- Detailed analysis results regarding the water quality of the groundwater being pumped out for by-passing and by sub-drains at Fukushima Daiichi NPS
- Progress Status of Fukushima Daiichi NPS (monthly)
- ANRE Special Contents – article on Fukushima Daiichi NPS
- Related Links
What's New
- August 22, 2023
- Monthly progress (July 27, 2023)
- August 16, 2023
- Video Conference Briefing Session to the Government of the Republic of Korea Regarding the Handling of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO's Fukushima Daiichi Nuclear Power Station.
- August 7, 2023
- Video Conference Briefing Session to the Government of the Republic of Korea Regarding the Handling of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- July 31, 2023
- Publication of the Report on the Dialogues between the Government of Japan and the PIF regarding Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- July 26, 2023
- Briefing Session to the Government of the Republic of Korea on the Current Status of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- July 24, 2023
- Monthly progress (June 29, 2023)
- July 19, 2023
- Video Conference Briefing Session Regarding the Handling of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- July 12, 2023
- Briefing Session to the Government of the Hong Kong Special Administrative Region on the Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- July 4, 2023
- Minister Nishimura Holds a Conference with H.E. Mr. Rafael Mariano Grossi, Director General of the International Atomic Energy Agency (IAEA)
- July 4, 2023
- Publication of the IAEA Comprehensive Report on the Safety Review of the ALPS Treated Water at TEPCO’s Fukushima Daiichi nuclear Power Station (FDNPS)
- June 27, 2023
- Video Conference Briefing Session to the Government of the Republic of Korea regarding the handling of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- June 7,2023
- Briefing Session to the Pacific Islands Forum Secretariat and Experts on the Current Status of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- June 2, 2023
- The IAEA Conducted Its Comprehensive Review Mission Regarding the Planned Discharge of ALPS Treated Water at Fukushima Daiichi Nuclear Power Station
- June 1, 2023
- IAEA Published Results for First Interlaboratory Comparison on the Determination of Radionuclides in ALPS Treated Water
- May 26, 2023
- IAEA Officials and International Experts to Visit Japan on a Comprehensive Mission to Review the Discharge of ALPS Treated Water from TEPCO’s Fukushima Daiichi Nuclear Power Station into the Sea
- May 25, 2023
- Dispatch of the Delegation of Republic of Korea (ROK) Experts on the Current Status of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station (FDNPS) (from May 22 to 25)
- May 19, 2023
- Dispatch of the Delegation of Republic of Korea (ROK) Experts on the Current Status of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- May 13, 2023
- Briefing Session to the Government of the Republic of Korea on the Current Status of Advanced Liquid Processing System (ALPS) Treated Water at Fukushima Daiichi Nuclear Power Station
- May 12, 2023
- Video Conference Briefing Session regarding the handling of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- May 11, 2023
- Briefing Session to the Government of the Republic of Korea on the Current Status of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- May 1, 2023
- Monthly progress (March 30, 2023)
- April 20, 2023
- Minister Nishimura Holds a Video Conference with H.E. Mr. Rafael Mariano Grossi, Director General of the International Atomic Agency (IAEA)
- April 17, 2023
- Dialogue with the Pacific Islands Forum Secretariat and Experts on the Current Status of Advanced Liquid Processing System (ALPS) Treated Water at TEPCO’s Fukushima Daiichi Nuclear Power Station
- April 6, 2023
- The IAEA Published a Report on Its Second Review Mission of Safety Aspects of Handling of ALPS Treated Water at Fukushima Daiichi Nuclear Power Station in November 2022
- April 3, 2023
- Experts from IAEA Laboratories visit TEPCO’s Fukushima Daiichi Nuclear Power Station to assess the analytical capabilities of TEPCO
- March 30, 2023
- Monthly progress (February 22, 2023)
- March 24, 2023
- State Minister Ota Receives a Courtesy Call from Mr. Reinhard BÜTIKOFER, Member of the European Parliament
Special Page explaining ALPS Treated Water

Current Status of Fukushima Daiichi NPS
- Summary of Fukushima Daiichi NPS(PDF:1,571KB)
- Monthly progress (including seawater monitoring, fuel removal etc.) (PDF:5,229KB)
Videos: 1F FACT
1F FACT 01:Discharging ALPS treated water into the sea
Simplified Chinese version
Korean version1F FACT 02:Retrieval of fuel debris
Simplified Chinese version
Korean version1F FACT 03: The current state of the Fukushima Daiichi
Simplified Chinese version
Korean version
The Mid-and-Long term Roadmap
- Outline of the 5th Revision: “the Mid-and-Long term Roadmap” (December 27, 2019) (PDF:1,014KB)
- The 5th Revision: “the Mid-and-Long term Roadmap” (December 27, 2019)(PDF:1,160KB)
Cooperation with IAEA
- Minister Nishimura Holds a Conference with H.E. Mr. Rafael Mariano Grossi, Director General of the International Atomic Energy Agency (IAEA)(July 4, 2023)
- Minister Nishimura Holds a Video Conference with H.E. Mr. Rafael Mariano Grossi, Director General of the International Atomic Agency (IAEA)(April 20, 2023)
- Minister Hagiuda Holds Meeting with H.E. Mr. Rafael Mariano Grossi, Director General of the IAEA (May 18, 2022)
- Minister Hagiuda Holds a Video Conference with H.E. Mr. Rafael Mariano Grossi, Director General of the IAEA (December 10, 2021)
- IAEA’s evaluation on “Events and highlights on the progress related to recovery operations at TEPCO’s Fukushima Daiichi NPS”
- Report in the discharge record and the seawater monitoring results at Fukushima Daiichi NPS
IAEA review mission
IAEA's support for handling of ALPS treated water
The 5th review mission (June 30- Aug 27, 2021)
- Report of the 5th review mission(PDF:1,375KB)
- (Japanese ver.) Report of the 5th review mission(PDF:504KB)
General Conference 2022 – Side event -
- 1. Perspective of the IAEA on Fukushima Daiichi Decommissioning (IAEA)(PDF:1,535KB)
- 2. Fukushima Daiichi Decommissioning Current Status and Challenges (TEPCO)(PDF:4,796KB)
- 3. Progress of Reconstruction in FDNPS surrounding area (METI)(PDF:2,188KB)
- 4. Fukushima Institute for Research, Education and Innovation (Reconstruction Agency)(PDF:1,554KB)
- 5. Safety of Food from Japan and Restoration of its Overseas Distribution (MAFF)(PDF:976KB)
Countermeasures to Manage Contaminated Water
Water for cooling fuel debris touches that debris, and thereby becomes highly contaminated water containing highly concentrated radioactive materials.
New contaminated water is generated due to mixing of this highly contaminated water with groundwater and rainwater that flow into buildings.

Environmental Monitoring


- Observation data, Fukushima Daiichi NPS (TEPCO)
- Monitoring information of environmental radioactivity levels (NRA)
- Radiation levels in the prefecture (Fukushima Prefecture)
Efforts made for decommissioning
What is decommissioning of the Fukushima Daiichi Nuclear Power Station?
Efforts are focused primarily on the following 4 types of work.

Decommissioning will be carried out safely and steadily over 30 to 40 years

Current situation at each unit

Detailed analysis results regarding the water quality of the groundwater being pumped out for by-passing and by sub-drains at Fukushima Daiichi NPS
- Water quality of the pumped up groundwater and sub-drains (August, 2023)(PDF:294KB)
- Water quality of the pumped up groundwater and sub-drains (July, 2023)(PDF:279KB)
- Water quality of the pumped up groundwater and sub-drains (June, 2023)(PDF:263KB)
- Water quality of the pumped up groundwater and sub-drains (May, 2023)(PDF:258KB)
Progress Status of Fukushima Daiichi NPS (monthly)
ANRE Special Contents – article on Fukushima Daiichi NPS-
- The challenge of retrieving “fuel debris” Article No.3: The frontier of technological development (February 28, 2020)
- The challenge of retrieving “fuel debris” Article No.2: What obstacles will we face? (February 21, 2020)
- The challenge of retrieving “fuel debris” Article No.1: What is fuel debris? (February 14, 2020)
- Fight against contaminated water: The generation of contaminated water steadily reduced to about one-third (August 8, 2019)
Related Links
- TEPCO: Tokyo Electric Power Company
- TEPCO:TREATED WATER POTAL SITE
- NDF: Nuclear Damage Compensation and Decomissioning Facilitation Corporation
- NRA: Nuclear Regulation Authority
- MAFF: Ministry of Agriculture, Forestry and Fisheries
- Fukushima Prefecture: Food monitoring site
- IRID: International Research Institute for Nuclear Decommissioning
- JAEA: Japan Atomic Energy Agency
- IAEA: Fukushima Daiichi Status Updates
Division in Charge
Nuclear Accident Response Office, Electricity and Gas Industry Department, Agency for Natural Resources and Energy
Last updated:2023-08-22