The California ISO has revised the operating procedures referenced below.

1210 Day-Ahead Market, version 18.2, effective April 1, 2019.

Section D.3.1.2: Added new Step 8

4510 Load Management Programs and Underfrequency Load Shedding, version 5.0, effective April 1, 2019.

Annual Review:

• Section 3.2.1, replaced “ISO Interchange Scheduler Desk” with ‘ISO Transmission Desk”
• Section 5: Updated procedure reference for Review Criteria
• Replaced Peak RC (Reliability Coordinator) with the RC and Reliability Messaging Tool (RMT) with Reliability messaging system
• Minor format and grammar updates

4510A Load Shed Calculation Guideline - Public Attachment, version 10.5, effective April 1, 2019.

Updated the percentages to reflect Peak Loads in 2018

ISO Operating Procedures - http://www.caiso.com/rules/Pages/OperatingProcedures/Default.aspx