Proposed Revision Request Detail Help
PRR Life Cycle*********Closed
PRR Details
PRR #
1278
Title Non-generator resource update
Date Submitted 8/12/2020 1:57 PM
PRR Category B
Priority Emergency
Owner Batakji, Jamal (CAISO)
Status Closed
Status End Date 11/13/2020 11:59 PM
Related BPM Market Operations
BPM Section 6.6.2.3, 7.8.2.5
RSS Subscribe
Existing Language
 
See attached
Proposed Language
 
See attached
Reason For Revision
 
The ISO has implemented several improvements to the Non-Generator Resource (NGR) Model in the day-ahead and real-time market. The PRR document provides detailed information regarding the changes applied to the market model.
Effective Date: 8/27/2020
Click here to view the Recommendation Details for this PRR
BPM PRR Submitter

Batakji, Jamal (CAISO)
Modified BPM language proposed by the PBM Chnage Management Coordinator

No modifications to the original PRR are proposed.
Identification of the authorship of comments

No comments were received.
Action

Approve the BPM PRR as submitted

N/A
Statement of apparent requirements of the BPM PRR

Non-generator resource update
Priority and rank for any BPM PRR requiring a CAISO system change

N/A
Proposed effective date(s) of the BPM PRR

8/27/2020
Other recommended actions

No other recommended actions on this PRR.
Click here to view the Final Decision for this PRR
Final Decision

Adopt the recommendation
Stakeholder Comment

Comments submitted and CAISO posted the responses on 10/26/2020

Effective Date

8/27/2020
Action

Adopt the recommendation as originally issued

N/A
Announcements
PRR 1278 has been made available at this time to allow additional time to review and submit comments. 
Comment period will close 9/16/2020.  PRR will be discussed during the September and October BPM meetings.
Posted On - 8/14/2020 7:40 AM
Impact Analysis
Impact Analysis not available.
Initial Comments
SDG&E interprets the PRR to better optimize market awards in IFM to ensure sufficient SOC is available.  However, the market optimization in real time seems to also limit the storage resource's ability to provide real time AS capability because it must have sufficient SOC so that it may be able to meet its future self-schedule or AS awards from the day ahead market.
This seems to mimic the minimum charge requirement proposal that is being developed in the Resource Adequacy Enhancements initiative.
It would be helpful for the CAISO to explain the impact of these model changes and provide an illustrative example.  Additionally, SDG&E would like to understand why this is categorized as an emergency PRR.
Thank you.
9/16/2020 8:03 PM
Logged By - Nuo Tang (SDG&E) (San Diego Gas & Electric Company)
---------------------------------------------
CAISO: All ancillary services procured in the day-ahead market are financially binding awards; thus, the market will reserve enough state of charge from NGRs to ensure there is sufficient charge to deliver that capacity. NGRs can continue to submit bids for energy and ancillary service in the real-time market. If the NGR has enough state charge to provide either incremental energy or ancillary service, it could receive incremental awards in the real-time market.
The emergency status of this PRR is due to the effective date of 8/27/20.
9/25/2020 9:02 AM
Responded By - Batakji, Jamal (CAISO)
PG&E is concerned that PRR 1278 represents a significant change to the market optimization and bidding of non-generator resources (NGRs) and therefore requests that the CAISO: (a) reconsiders the emergency designation and (b) works with stakeholders before implementation. PG&E’s specific concerns are related to Section 7.8.2.5, which suggests that state-of-charge (SOC) constraints will be placed on NGRs in the real-time market based on day-ahead awarded ancillary services. One possible result of the PRR could be a substantial shift of batteries away from regulation services in the future.
9/16/2020 5:54 PM
Logged By - MichaelVolpePGE (Pacific Gas & Electric Company)
---------------------------------------------
CAISO: All ancillary services procured in the day-ahead market are financially binding awards; thus, the market will reserve enough state of charge from NGRs to ensure there is sufficient charge to deliver that capacity. NGRs can continue to submit bids for energy and ancillary service in the real-time market. If the NGR has enough state charge to provide either incremental energy or ancillary service, it could receive incremental awards in the real-time market.
9/25/2020 9:03 AM
Responded By - Batakji, Jamal (CAISO)
Recommendation Comments
2020-10-20 LS Power's Recommendation Comments on PRR 1278.pdf    
The CAISO received written comments on 10/20/2020 in reference to PRR 1278 from Renae Steichen at LS Power. Please see attached.

10/22/2020 11:00 AM
Logged By - Hines, Nicole (CAISO)
---------------------------------------------
The software change implemented as part of the PR1278 related to self-schedule is not like the Minimum Charge requirement. This change ensures that the real-time market application can respect SC's self-schedule to charge or discharge and manage the state of charge appropriately. In the absence of the constraint described in the PR1278, the storage resource state of charge may conflict with the self-schedule. The change provides self-schedule a higher priority because this is the input provided by the SC to the market; thus, the market allocates a higher priority to this self-schedule. Please note, this change impacts the real-time market when the self-schedule is within the real-time market horizon. If there are no self-schedules on the horizon for the real-time market, the market application will dispatch the storage resource based on bids.
10/26/2020 9:20 AM
Responded By - Batakji, Jamal (CAISO)
2020-10-20 CESA's Recommendation Comments on PRR 1278 - FINAL.pdf    
Recommendation Comments of the California Energy Storage Alliance (CESA) on PRR 1278
10/20/2020 4:27 PM
Logged By - Sergio Dueñas (California Energy Storage Alliance (CESA))
---------------------------------------------
The software change described in PRR 1278 is not similar to the minimum charge requirement (MCR), currently under discussion in the policy. There are two main changes explained in PRR 1278. The first change is related to reserving enough SOC to support the Ancillary Service, which is necessary to ensure that the storage device can deliver this capacity in case of a contingency event. The market application will dispatch any incremental SOC beyond which is reserved for ancillary service based on bids. The market application has a similar feature for all generating resources, where the market application reserves capacity if a generator has a day-ahead ancillary service awards.

The software change implemented as part of the PR1278 related to self-schedule is also not like the Minimum Charge requirement. This change ensures that the real-time market application can respect SC's self-schedule to charge or discharge and manage the state of charge appropriately. In the absence of the constraint described in the PR1278, the storage resource state of charge may conflict with the self-schedule. The change provides self-schedule a higher priority because this is the input provided by the SC to the market; thus, the market allocates a higher priority to this self-schedule. Please note, this change impacts the real-time market when the self-schedule is within the real-time market horizon. If there are no self-schedules on the horizon for the real-time market, the market application will dispatch the storage resource based on bids.
10/26/2020 9:23 AM
Responded By - Batakji, Jamal (CAISO)
Click here to view the Appeals for this PRR
Click on the '+' icon to submit a New Appeal

# of Appeals In Progress - 0
# of Appeals Closed - 0
# of Appeals Abandoned - 0
There are no Appeals on this PRR.
Attachments