The California ISO has revised the operating procedure referenced below.
4420 System Emergency, version 15.1, effective Aug. 1, 2023.
Section 3.2.1 and Definitions: Added Assistance Energy Transfer.
Moved enabling Reliability Demand Response Resource (RDRR) from Section 3.6.3 to Section 3.6.1.
Section 3.6.3: removed step to file OE-417.
Definitions: updated RDRR description.
Appendix: Added 4420J to list of procedure attachments.
Capitalized the term Operating Instruction throughout the document.
Minor format and grammar edits.
The ISO’s operating procedures are available on the Operating Procedures webpage.
