RSS Feed for Proposed Revision Request - 1679

PRR - 1679

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Impact Analysis for PRR - 1679

-By Vance, Dorothy on Wednesday, June 3, 2026 11:27:56 AM

Recommendation Comment for PRR - 1679

Description: CAISO has received the following comments from Alan Meck (Pacific Gas & Electric), 7/16/2026 1. Some of the text is garbled. For example, on p. 81, under Section 6.2 Analog and Digital Notes, #16 reads “HNote 1621es average wind speed.esources if there resource has a Battery component.SL” 2. PG&E is concerned with some of the text in the impact document that says CAISO will require the telemetry of SOC to agree with the master file values, because some batteries are overbuilt. And if a battery is overbuilt then there will be times where the SOC does not agree with the master file’s max value. 3. Also, this isn’t directly related to PRR 1679, but in the BPM on Direct Telemetry, Table 6-1 says that batteries are required to provide their ramp rate as part of their telemetry requirements. We are unsure how we would measure that. Could CAISO provide some clarification on its expectations around this requirement?
-By Williamson-Duffney, Joseph on Thursday, July 16, 2026 2:47:17 PM

Recommendation Comment for PRR - 1679

Description: 2. PG&E is concerned with some of the text in the impact document that says CAISO will require the telemetry of SOC to agree with the master file values, because some batteries are overbuilt. And if a battery is overbuilt then there will be times where the SOC does not agree with the master file’s max value. CAISO Response: The Instantaneous SOC value should be between the Minimum Continuous Energy Limit and Maximum Continuous Energy Limit as registered in the Master File. Battery resources are expected to be operating within the master file limit. 3. Also, this isn’t directly related to PRR 1679, but in the BPM on Direct Telemetry, Table 6-1 says that batteries are required to provide their ramp rate as part of their telemetry requirements. We are unsure how we would measure that. Could CAISO provide some clarification on its expectations around this requirement? CAISO Response: CAISO expectations on the ramp rate data for all resources is the same. Can you please send email to EDAS@caiso.com and provide more explanation on what issues are you running into while measuring the ramp rate for BESS resources?
-By Williamson-Duffney, Joseph on Thursday, July 30, 2026 11:36:07 AM

Recommendation for PRR - 1679

Proposed Language:

Updating Battery point Definitions and a new point addition - Minimum Continuous energy limit

Action: Approve the BPM PRR as submitted
Effective Date: 01/01/0001

Final Decision for PRR - 1679

Final Decision: Post the final as submitted.
Stakeholder Comment: N/A
Action: Adopt the recommendation as originally issued
Effective Date: 08/07/2026