California ISO - Documents By Group

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- Temporary shutdown of resource operations
- Transmission constraint relaxation parameter change
  Currently the ISO market software relaxes transmission constraints whenever the constraint’s shadow price hits a threshold of $5,000. When this occurs, high shadow prices and corresponding locational marginal prices, coupled with the reduced constraint limits, cause high real-time congestion offset costs. The ISO proposes reducing the threshold to $2,500 in the real-time market only, which will still allow for effective flow mitigation through market optimization.
- Transmission Maintenance Coordination Committee tariff amendment
- Transmission planning and generator interconnection integration
  The objective of this initiative is to integrate some components of the transmission planning and generator interconnection procedures so that ratepayer-funded transmission additions and upgrades are identified and approved under a single comprehensive process. The new process will provide incentives for resource developers to interconnect to the ISO grid at the most cost-effective locations. This effort builds on the FERC-approved revised transmission planning process, the generator interconnection procedures enhancements and generator interconnection Phase 2 discussions.
- Transmission reliability margin
  Currently, the ISO implements certain adjustments to intertie schedules within operating hours. Using a mechanism known as Transmission Reliability Margin, the ISO will be able to anticipate these transmission constraints in advance by reflecting them in market processes before schedules are awarded in the hour-ahead scheduling process. In this initiative, the ISO will develop tariff revisions and the NERC-required transmission reliability margin implementation document. The document will provide greater clarity regarding ISO management of transmission constraints in the real-time market.