NPRR1183 and PGRR108, ECEII Definition Clarification and Updates to Posting Rules for - PowerPoint Presentation

1. NPRR1183 and PGRR108, ECEII Definition Clarification and Updates to Posting Rules for Certain Documents without ECEIIKim RainwaterLegal/Regulatory Corporate CounselReliability and Operations Subcommittee MeetingJune 8, 2023Protocol Revision Subcommittee MeetingJune 14, 2023ERCOT Public

2. To provide background on Nodal Protocol Revision Request 1183 (NPRR1183), ECEII Definition Clarification and Updates to Posting Rules for Certain Documents without ECEII, and related Planning Guide Revision Request 108 (PGRR108)Overview2Why this is being presented:

3. Connected Rules for Information Access and HandlingFooter text goes here.3Public Utility Commission of Texas (PUCT)PUCT Subst. R. 25.362(e)(1)(A)How to process information requestsRegulationPolicyProtocolsERCOT Board of DirectorsERCOT Strategic Plan (2019-2023)Provide data while maintaining security and confidentialityAdditional ERCOT StakeholdersERCOT websiteMIS Certified AreaMIS Secure AreaKey Takeaway: Options for how to house documents are guided by ERCOT’s Strategic Plan. Market rules feature three location options for housing documents.

4. ERCOT website4Document Handling & Information AccessThe ERCOT website houses documents for routine public access.1 1 Nodal Protocol Section 12.1(3)

5. MIS Certified Area5Document HandlingThe MIS Certified Area maintains confidentiality of documents for an individual Market Participant. Information AccessThe public may request access to information by submitting to ERCOT an “Info Request”, subject to protections from disclosure of Protected Information, including commercially sensitive information. Of Note: The Certified Area may also include information requested by a Market Participant that Protocols don’t require to be posted.Market ParticipantMIS Certified Area 1 Nodal Protocol Sections 2; 12.1(1) 2 Nodal Protocol Section 1.3.1 3 Nodal Protocol Section 12.2(3)123

6. Key Takeaway: Updates considered today are part of comprehensive review to clean-up the Secure Area.MIS Secure Area6Document HandlingThe MIS Secure Area includes ECEII and also houses ECEII in a “Certified Area for TSPs Only”. Information AccessMarket Participants (MPs) or the public can only access ECEII when required by a law, regulation, order, or Protocol, with disclosure subject to requirements including reasonable effort to restrict access. ERCOT restricts access to the Secure Area to registered MPs, with a Digital Certificate issued upon request. Market Participants assign individual users eligibility to view the ECEII. 1 Nodal Protocol Section 12.1(2) 2 Nodal Protocol Section 1.3.6(1)(a) 3 Nodal Protocol Section 2 4 Nodal Protocol Section 12.1(2)123MIS Secure AreaDigital CertificateMarket ParticipantECEII-Eligible UserDigital Certificate Market ParticipantECEIIDigital CertificateMarket ParticipantGeneral information, markets reports, other system planning / operations reports4

7. Proposed Revisions Summary: NPRR1183 and PGRR1087ERCOT websitePublicPublicPublicPublicMove general information from the MIS Secure Area to the ERCOT website – Criteria, notices, and projections of Ancillary Services requirements (NPRR)Recognize general information already on the ERCOT website, with related clarifications: Reliability Must Run Criteria (NPRR); redacted versions of Regional Transmission Plan and redacted versions of Geomagnetic Disturbance assessments (PGRR)Remove reference to Federal Freedom of Information Act (FOIA) from definition of ERCOT Critical Energy Infrastructure Information (NPRR)

8. Next Steps8NPRR1183 moves general information from MIS Secure Area to ERCOT website; PGRR108 clarifies existing posting practiceAnticipated future revision requests to propose updating posting rules for other reports without ECEII, or to clarify existing posting practiceAnticipated Market Notice(s) of access change to reports to be designated ECEII

9. NPR1183 and PGRR108, Chart of Proposed Revisions9Appendix

10. Proposed Revisions Chart – part 110Revision No.Document Handling UpdateCurrent locationProposed locationReason to reviseRevision RequestRevision Request Page No.Rule to revise1Remove reference to federal Freedom of Information Act (FOIA) from definition of ERCOT Critical Energy Infrastructure InformationERCOT websiteNo changeExtraneous languageNPRR11833NP 2.12Move financial assumptions for economic planning criteria to the ERCOT websiteSecure AreaERCOT websiteGeneral Information - CriteriaNPRR11834NP 3.11.2(5)3Move Intermittent Renewable Resource Production Potential Forecast Criteria to the ERCOT websiteSecure AreaERCOT websiteGeneral Information -CriteriaNPRR11835, 6NP3.13(2)4Remove requirement to post on Secure Area Reliability Must Run Evaluation Criteria that are now listed in NP 3.14.1.2(3)(c)ERCOT websiteNo changeDuplicative languageNPRR11837NP 3.14.1(1)(f)5Remove requirement (includes an example) to post on Secure Area Reliability Must Run determinations that NP 3.14.1.2(3)(e) now requires posted on Secure AreaSecure AreaNo changeDuplicative languageNPRR11837NP 3.14.1(1)(f)6Change Forced Outage NSO won’t be posted on the ERCOT “MIS” to won’t be posted on the “ERCOT website”Secure AreaNo changeLanguage clarificationNPRR11839NP3.14.1.1(3)(b)7Move Non-Forced Outage NSO to the ERCOT websiteSecure AreaERCOT websiteGeneral Information - NoticeNPRR11839NP3.14.1.2(1)

11. Proposed Revisions Chart – part 211Revision No.Document Handling UpdateCurrent locationProposed locationReason to reviseRevision RequestRevision Request Page No.Rule to revise8Move Non-Forced Outage NSO to the ERCOT websiteSecure AreaERCOT websiteConforms to Revision No. 7NPRR12NP3.14.1.2(7)9Move Non-Forced Outage NSO and Change of Generation Resource Designation to the ERCOT websiteSecure AreaERCOT websiteConforms to Revision No. 7General Information – NoticeNPRR13NP3.14.1.9(2)10Place on ERCOT website annual ERCOT Board of Directors-approved Ancillary Service Requirement MethodologyN/AERCOT websiteGeneral Information - MethodologyNPRR17NP3.16(3)11Move to ERCOT website minimum capacity required from Resources providing Responsive Reserve Service using Primary Frequency ResponseSecure AreaERCOT websiteGeneral Information – A/S ProjectionsNPRR17NP3.16(5)12Post minimum capacity required from Resources providing ERCOT Contingency Reserve Service (ECRS) on the ERCOT websiteN/AERCOT websiteGeneral Information – ECRS ProjectionsNPRR18NP3.16(8) greybox13Clarify that versions of the Regional Transmission Plan redacted of ECEII and Protected Information are on the ERCOT websiteERCOT websiteNo changeConforms to current practice (file automatically downloads via public link)PGRR3, 8PG3.1.1.2(2)PG7.1(2)

12. Proposed Revisions Chart – part 312Revision No.Document Handling UpdateCurrent locationProposed locationReason to reviseRevision RequestRevision Request Page No.Rule to revise14Clarify that both preliminary and final Geomagnetically-Induced Current (GIC) flows and both preliminary and final GIC time series are posted on the Secure AreaSecure AreaNo changeLanguage clarificationPGRR1083PG3.1.815Clarify that preliminary results of the GMD vulnerability assessments are posted on the ERCOT website for TSP and Resource Entity commentsERCOT websiteNo changeConforms to current practice (included in presentation on meeting page of the Regional Planning Group)PGRR1084PG3.1.8(4)16Clarify versions of Geomagnetic Disturbance assessments redacted of ECEII and Protected Information are on the ERCOT websiteERCOT websiteNo changeConforms to current practice(file automatically downloads via public link)PGRR1084, 8PG3.1.8(5)PG7.1(2)17Update terminology for public posting locations from “Public” to “ERCOT website” in chart summarizing data set posting locationsERCOT websiteNo changeLanguage clarificationPGRR1086-8PG7.1(2)

13. Appendix Chart Definitions and Acronyms13ERCOT website – Market Information System public areaNP – Nodal ProtocolPG – Planning GuideSecure Area – Market Information System Secure Area