Works

Key roles of the OCCTO

In terms of a stable electricity supply in Japan, we are a central player for that roles.
We conduct our business in line with three major purposes that are supply-demand adjustment and grid operation while monitoring the supply-demand balance across the nation in all timelines, conversion to the next-generation electric power network looking ahead to the carbon neutrality by 2050, and the securing of supply capacity for a stable supply.

Supply-demand adjustment/Grid operation

We achieve a stable supply of electricity by monitoring the supply-demand situations and operational status of grids across the nation and by giving instructions to the relevant companies when the supply-demand balance gets worse. In addition, we study and design the supply-demand balancing market and other schemes in detail in order to procure and operate the balancing capacity more efficiently.

• 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)

Conversion to the next-generation electric power network

We take the lead in the promotion of fair, impartial, and effective use of power transmission and distribution facilities and in the development and renovation of cross-regional interconnected grids in order to contribute to the efforts to make renewable energy a primary energy source and to reinforce the resilience of electric power systems.

• 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

Securing of supply capacity for a stable supply

In order to establish a system to secure and use the supply capacity necessary for a stable supply for the medium-to-long term at the lowest possible cost, we study, design in detail, and operate the market schemes and systems to trade the values of power sources.

• 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