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About OCCTO
Message from the President
Role of OCCTO in the Electricity System Reform
Organization Information
Office Location

Membership

Membership

Articles of Organization, etc

Articles of Incorporation, etc

Works
Realizing stable supply through formulation of rules for using interconnection lines and monitoring and operation of national supply and demand situation and network
Verification of output curtailment of renewable energy power generation facilities
Study and detailed design of supply-demand balancing market scheme
Study and detailed designing of co-optimization market (i.e., simultaneous contracted market for electric energy and balancing capacity)
Formulating a long-term cross-regional network policy and development plan
Formulating rules for facility renewal
Review of grid access rules
Review of Japanese version of “Connect & Manage”
Operation of Mutual Assistance System for Disaster Recovery Funds
Study, detailed design, and operation of capacity market
Demand forecast across the country and of each supply area
Aggregation of electricity supply plans
Study of the scenario of future electricity supply and demand
Detailed design and operation of reserve power source system
Supporting expansion of the use of decarbonized power sources to achieve carbon neutrality

Information Disclosure

Annual Report

Annual Report
Annual Report FY 2016
Annual Report FY 2019
Annual Report FY 2020
Annual Report FY 2021
Annual Report FY 2022
Annual Report FY 2023
Annual Report FY 2024
Annual Report FY 2025

Electricity Supply Plan

Electricity Supply Plan
Aggregation of Electricity Supply Plans for FY 2016
Aggregation of Electricity Supply Plans for FY 2017
Aggregation of Electricity Supply Plans for FY 2018
Aggregation of Electricity Supply Plans for FY 2019
Aggregation of Electricity Supply Plans for FY 2020
Aggregation of Electricity Supply Plans for FY 2021
Aggregation of Electricity Supply Plans for FY 2022
Aggregation of Electricity Supply Plans for FY 2023
Aggregation of Electricity Supply Plans for FY 2024
Aggregation of Electricity Supply Plans for FY 2025
Aggregation of Electricity Supply Plans for FY2015 and Transmission to Minister of Economy, Trade and Industry
Aggregation of Electricity Supply Plans for FY2016

Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines

Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2015
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2016
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2017
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2018
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2019
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2020
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2021
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2022
Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2023
Outlook for Electricity Supply-Demand and Cross-regional Interconnection Lines FY 2024

Report on the Quality of Electricity Supply

Report on the Quality of Electricity Supply
Report on the Quality of Electricity Supply-Data for FY 2015
Report on the Quality of Electricity Supply-Data for FY 2016
Report on the Quality of Electricity Supply-Data for FY 2017
Report on the Quality of Electricity Supply-Data for FY 2018
Report on the Quality of Electricity Supply-Data for FY 2019
Report on the Quality of Electricity Supply-Data for FY 2020
Report on the Quality of Electricity Supply-Data for FY 2021
Report on the Quality of Electricity Supply-Data for FY 2022
Report on the Quality of the Electricity Supply-Data for FY 2023
Report on the Quality of the Electricity Supply-Data for FY 2024

Miscellaneous

Miscellaneous
Presentation at CIGRE Conference
Participation Report: Electricity Security Advisory Board High-Level Meeting at IEA Headquarters

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About OCCTO
Articles of Organization, etc

About OCCTO

Articles of Incorporation, etc

Articles of Incorporation(353KB)
Operational Rules(1654KB)
Network Codes(1436KB)

Business Plans

2026(240KB)
2025(286KB)
2024(241KB)
2023(211KB)
2022(171KB)
2021(206KB)
2020(132KB)
2019(130KB)
2018(111KB)
2017(126KB)
2016(80KB)

6-2-15, Toyosu, Koto-ku, Tokyo, 135-0061, JAPAN

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Copyright OCCTO. All Rights Reserved.

About OCCTO

About OCCTO Message from the President Role of OCCTO in the Electricity System Reform Organization Information Office Location Membership Articles of Organization, etc

Information disclosure

Information Disclosure Annual Report Electricity Supply Plan Outlook of Electricity Supply-Demand and Cross-regional Interconnection Lines Report on the Quality of Electricity Supply Miscellaneous

Works

Works Realizing stable supply through formulation of rules for using interconnection lines and monitoring and operation of national supply and demand situation and network Verification of output curtailment of renewable energy power generation facilities Study and detailed design of supply-demand balancing market scheme Study and detailed designing of co-optimization market (i.e., simultaneous contracted market for electric energy and balancing capacity)Formulating a long-term cross-regional network policy and development plan Formulating rules for facility renewal Review of grid access rules Review of Japanese version of “Connect & Manage”Operation of Mutual Assistance System for Disaster Recovery Funds Study, detailed design, and operation of capacity market Demand forecast across the country and of each supply area Aggregation of electricity supply plans Study of the scenario of future electricity supply and demand Detailed design and operation of reserve power source system Supporting expansion of the use of decarbonized power sources to achieve carbon neutrality

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Copyright OCCTO. All Rights Reserved.