OCCTO

Verified

Partner

The OCCTO (Organization for Cross-regional Coordination of Transmission Operators) is the coordinator and buyer of balancing capacity and ancillary services in Japan. OCCTO acts in a national capacity, overseeing grid-wide supply-demand balance, frequency control, and reserve procurement.

List of live opportunities

Balancing Capacity

Japan's primary balancing market for alleviating constraints and managing grid frequency, this includes capacity traded to address demand forecast errors and renewable generation variability over half hourly intervals.

Long‑Cycle Frequency Control

This service works to control system frequency and keep it within safe limits and kicks in after 30 minutes when frequency goes beyond a certain threshold.

Market Price Differential Receiving Rights

Day ahead local constraints market controlled by OCCTO with the local distribution companies as key participants. On a day ahead basis, OCCTO trades price differentials between regional service areas to alleviate transmission network constraints.

Short‑Cycle Frequency Control

This service works to control system frequency and keep it within safe limits. The dynamic nature provides fast acting (seconds - 30 minutes) pre-fault delivery for particularly volatile periods.

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