Hello BESTF Participants,
Thanks again for your participation in Tuesday’s (9-29-20) meeting. Below is a short summary and information on how and when we need your input.
1) NPRR 1014 Energy Storage Resource Single Model:
a. At the 9-29-20 BESTF meeting, ERCOT reviewed the NPRR 1014 working document and the BESTF reached consensus on minor language changes in 5 sections (identified before the meeting) and also reached consensus on the desktop edits on the definitions of HSL and LSL for ESRs.
b. The most recent version of the document (including the desktop edits made at the meeting), reflecting BESTF consensus, is posted at: http://www.ercot.com/content/wcm/key_documents_lists/191239/1014NPRR-07_ERCOT_Comments_09XX20_BETSF_092920_v2.docx
c. The expectation is that Market Participants (if necessary) file comments on NPRR 1014 in a timely manner prior to the Oct. 15 PRS meeting so those issues can be discussed at PRS as appropriate. Note that section 3.2.5 (4)(j) did not have consensus.
d. Market Participants should be prepared to discuss comments on NPRR 1014 at the Oct. 15 PRS meeting.
e. The plan is to request a recommendation for approval of NPRR 1014 at the Nov. 11 PRS meeting as part of the Passport Project package.
2) NPRR 1029 DC-Coupled Resources:
a. ERCOT reviewed the working document of the NPRR 1029 and the BESTF reached consensus on minor language changes in 4 sections identified before the meeting.
b. There were no changes made during the meeting and the latest version, reflecting BESTF consensus, is posted at:
c. The plan is to request a recommendation for approval of NPRR 1029 at the Nov. 11 PRS meeting as part of the Passport Project package.
3) NPRR 1043: Clarification of NPRR 986 Language Related to WSL:
a. This NPRR was discussed at the 9-11-20 BESTF meeting and no comments were received prior to the 9-29-20 BESTF meeting. At the 9-29-20 BESTF meeting, ERCOT reviewed the NPRR and BESTF reached consensus on the document.
b. The most recent version of the document is posted at: http://www.ercot.com/content/wcm/key_documents_lists/212355/1043NPRR-01_Clarification_of_NPRR986_Language_Related_to_Wholesale_Storage_Load_090120.docx
c. There was some discussion on the proposed 15% auxiliary Load default percentage in the NPRR. During the BESTF meeting it was confirmed that the approximately 30% value referenced by John Bernecker in a different meeting earlier this year was for round trip efficiency, which is different than auxiliary Load. Here is the link to the study that was referenced by John Bernecker: https://www.energy.gov/sites/prod/files/2019/07/f65/Storage%20Cost%20and%20Performance%20Characterization%20Report_Final.pdf
d. The plan is to request a recommendation for approval of NPRR 1043 at the Oct. 15 PRS meeting.
4) NPRR 1026: Self-Limiting Facilities and Self-Limiting Resources:
a. The BESTF reached consensus on NPRR 1026 at the 8- 14-20 BESTF meeting but at the following PRS meeting that there was a brief discussion on the definition of Self-Limiting Facility.
b. At the 9-29-20 BESTF meeting, the BESTF reviewed the most current version of the definition and confirmed the revised definition was appropriate.
c. The most recent version of the document is posted at: http://www.ercot.com/content/wcm/key_documents_lists/207625/1026NPRR-06_ERCOT_Comments_092220.docx
d. The plan is to request a recommendation for approval of NPRR 1026 at the Oct. 15 PRS meeting.
5) NPRR 995: RTF-6 Create Definition and Terms for Settlement Only Energy Storage:
a. At the 9-29-20 BESTF meeting ERCOT reviewed a PPT and Spreadsheet with examples on the “generation accumulator” methodology.
b. The document with the most recent comments filed by ERCOT on the NPRR is posted at: http://www.ercot.com/content/wcm/key_documents_lists/200280/995NPRR-06_ERCOT_Comments_091020.docx
c. The plan is to have more discussion at the 10-07-20 WMS meeting, where the NPRR is listed as “possible vote.” Note that ERCOT is preparing additional comments that may not be ready in time for discussion at WMS.
a. For future topics, consider adding to the Key-Topic-Concept (KTC) spreadsheet the idea to provide the functionality for a resource to telemeter and change its dead-band setting. More discussion is needed.
b. For future topics, consider adding to the KTC spreadsheet the topic of “Qualified Facilities and Energy Storage Resources”. More discussion is needed.
The next BESTF meeting is scheduled for Thursday, 10-22-20.
Please don’t hesitate to contact us.
Market Design and Development
2705 West Lake Drive
Taylor, Texas 76574
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