Notification of revised ISO operating procedures 3140A and 4110A

The California ISO has revised the operating procedures referenced below. 

3140A TOP-003 TOP - BA Data Request and Specifications for Data Provision, version 6.4, effective July 8, 2024. 

Updated data request 6.8.1 for Mega volt ampere reactive (Mvar) data to include more data for reactive capability curves. Existing resources to send this data through their designee via Customer Inquiry, Dispute and Information System (CIDI). Updated data request 6.8.2 to extreme weather template to remove North American Electric Reliability Corporation (NERC) Alert 3 language. Added Gridforce (GRID) in all instances where applicable and added to Operationally Affected Parties. Updated data request 1.15 for existing Phasor Measurement Unit (PMU) installations to match language with RC0120A. 

4110A Department of Energy (DOE), NERC and Western Electricity Coordinating Council (WECC) Significant Event Reporting Requirements, version 8.4, effective July 8, 2024.

Item #9: Removed note, as this is no longer applicable. Added Item #27 based on new OE-417 criteria.

The California ISO’s operating procedures are available on the Operating Procedures webpage.

Contact information

Please contact the CAISO/RC West Procedure Control Desk at ProcedureControl@caiso.com with any questions.