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Bulletins, reports and studies

We provide centralized access here to all ISO technical bulletins, reports and studies.


Seasonal assessments

These assessments produce likely operating conditions that account for variances in load and resources under stressed and favorable operating conditions.

Transmission outage reports

All transmission outages must be reported to the California ISO with a description of the cause and all remedial actions taken. Information is confidential. Access requires a valid California ISO user certificate.


Curtailed and non-operational generators

Daily snap-shot of California power plants that are not operational due to planned or unplanned outages. Please note that reported conditions are dynamic and subject to change without further notice.

Market reports

Reports and audits regarding system events and other operational issues including frequency response and contingency reserve charts, reports on load shedding and other events, and operational studies.
  • Monthly renewables report, greenhouse gas, wind and solar curtailment reports
    These reports provide important information about actual renewable energy within the ISO grid as we move towards integrating more renewable resources.
  • Department of market monitoring reports and presentations supporting data
    These temporary data files are posted per requests received by the Department of Market Monitoring.
  • Integrated resource planning preferred system portfolio model
    The California ISO provides a direct link to its production cost simulation models for the integrated resource planning (IRP) proceeding, CPUC Docket No. R.20-05-003.
  • Moorpark subarea historical load data
    This temporary data file is associated with the Center For Energy Efficiency And Renewable Technologies' data request
  • Price correction FERC waiver data
    These temporary data files are associated with the FERC waiver submitted on February 26, 2016.
  • Market performance reports
  • Capacity procurement mechanism
    The ISO issues preliminary notification of a CPM designation through a market notice and provides additional details in a formal designation report within 10 days after the end of the month.
  • Demand response net benefits test results
    These results provide on-peak and off-peak monthly threshold market clearing prices applicable to demand response resources. The results are published on the 15th of every month for the preceding trade month.
  • Exceptional dispatch reports
    This report provides Market Participants with data on the frequency and volume of exceptional dispatches initiated within the California ISO Balancing Authority Area.
  • Non-resource adequacy capacity reports
    This report provides information of all non-RA capacities committed by the ISO and the reasons. Reports are published monthly on the 10th of each month for non-RA capacities committed in the preceding month.
  • Average emissions rate reports
    This report shows a measure of the average emissions rate (AER) covering the entire WEIM footprint. It also provides the emissions intensity of WEIM transfers into California.
  • Greenhouse gas emissions tracking reports
    This report includes an accounting of GHG emissions for the ISO balancing authority area (BAA), including ISO internal resources, net imports, and transfers from Energy Imbalance Market entities into the ISO BAA. This report also reflects the ISO assessment of GHG reductions associated with EIM operations. See Tracking Methodology and Frequently Asked Questions.
  • Market disruption reports
    This report provides Market Participants with a comprehensive record of all market disruptions occurring in the California ISO Day-Ahead and Real-Time Markets. Reports are published monthly on the 15th of every month and include data for the trade dates ending 30 days prior to the report date.
  • Minimum online commitment reports
    This report provides data on Pmin and cleared value of units committed by the MOC constraint to maintain reliability in the integrated forward market.
  • Price correction reports
    These reports provide summaries of the price corrections made by week.
  • Resource adequacy evaluation reports
    This report provides RA compliance data regarding individual and/or aggregate validation of system and local RA showings. The California ISO may implement backstop procurement if the additional reliability needs presented in these reports are not mitigated in a timely manner.

Market monitoring reports and presentations
Analysis materials produced by ISO Market Monitoring staff regarding performance of the ISO markets.

Technical bulletins
Technical bulletins are provided to communicate complex and technical information for the convenience of our participants.
  • Market and operations technical bulletins
    Use of technical bulletins is subject to the ISO website Terms of Use.
  • Generator interconnection technical bulletins
    Use of technical bulletins is subject to the ISO website Terms of Use.
  • Technical bulletins archive
    Use of technical bulletins is subject to the ISO website Terms of Use.

Market issues and performance reports
We provide annual and quarterly reports on market issues and performance.

Market Surveillance Committee opinions and reports
The Market Surveillance Committee provides comments, critiques and recommendations about the ISO market monitoring process and a variety of market issues to the ISO and Board of Governors.