Ercot Technical Advisory Committee (Tac) Meeting

ERCOT TECHNICAL ADVISORY COMMITTEE (TAC) MEETING ERCOT Met Center / 7620 Metro Center Drive, Austin, Texas 78744 September 7, 2012; 9:30 a.m. – 2:30 p.m. Call-in Number: 1.877.668.4493 Participant Code: 650 921 694

1. Antitrust Admonition K. Ögelman 9:30 a.m. 2. ERCOT Board Update K. Ögelman 9:35 a.m. 3. Approval of Draft TAC Meeting Minutes (Vote): K. Ögelman 9:40 a.m.  June 20, 2012  June 28, 2012  July 9, 2012 4. Wholesale Market Subcommittee Report* J. Bevill 9:45 a.m.  Confirmation of WMS Leadership (Vote)  2013 Competitive Constraints (Possible Vote)  Protocol Section 4.4.10, Credit Requirement for DAM Bids and Offers, Annual Review (Vote)  Release of Historical Number of CRR Transactions as Prescribed in Protocol Section 7.5.2, CRR Auction Offers and Bids (Vote) 5. Protocol Revision Subcommittee Report T. Burke 10:30 a.m.  Nodal Protocol Revision Requests (NPRRs) (Vote): o NPRR425, Creation of a Wind Resource Group for GREDP and Base Point Deviation Evaluation o NPRR460, WGR Ramp Rate Limitations o NPRR464, SASM Procurement Reporting o NPRR466, Asset Depreciation Schedule for Capital Contributions o NPRR467, Balancing Account Resettlement due to DAM Resettlement o NPRR470, Real-Time PTP Option Modeling Language Cleanup - URGENT o NPRR472, Implementation Clarifications for Consideration of DC Tie Lines and Outages in CCTs - URGENT o NPRR477, Exception for Block Load Transfers at Presidio - URGENT

 Revisions to Other Binding Documents List: Removal of Power System Planning Charter and Processes/Regional Planning Group (RPG) Processes and Procedures (Vote) 6. Revision Requests Previously Tabled at TAC: K. Ögelman 11:15 a.m.  NOGRR086, Clarification of Seasonal Unit Capability Testing Requirements (Vote)  NOGRR095, Type 2 Special Protection System Submissions (Vote)  NOGRR099, SPS Procedure Changes for Consistency with NERC Reliability Standards – URGENT (Vote) 7. Reliability and Operations Subcommittee Report * B. Williams 11:25 a.m.  NOGRR091, Criteria for the Selection of Operators (Vote)

9/7/12 TAC Public 1  NOGRR093, Synchronization with NPRR365 (Vote)  NOGRR096, Clarification of RRS Obligation (Vote)  NOGRR097, New Section 8I, Black Start Resource Availability Test Form (Vote)  NOGRR098, Change of Facility Submission Time Lines to Align with Protocols (Vote)  PGRR018, Clarify the Prerequisites for Adding a New Generation Resource to the Planning Models and Capacity Demand and Reserves Report (Vote) 8. Retail Market Subcommittee Report* R. Bevill 11:55 a.m. 9. Commercial Operations Subcommittee Report* H. Basaran 12:00 p.m. Lunch 12:05 p.m. 10. Market Enhancements Task Force Report* K. Ragsdale 12:30 p.m. 11. ERCOT Operations, Planning, and IT Report 12:45 p.m.  Regional Planning Group (RPG) Charter Revisions (Possible J. Billo Vote) J. Billo  STEC KEC-MEC Load Addition RPG Project (Possible Vote) J. Billo  ERCOT Load Resources – Responsive Reserve Service K. Ragsdale/ Assessment W. Katzenstein  Fast Responding Regulation Service (FRRS) Pilot Project (KEMA) (Possible Vote) 12. Other Business 2:15 p.m.  Revised TAC Procedures (Vote) K. Hobbs  Future Agenda Items K. Ögelman o Annual TAC and TAC Subcommittee Structure Review Adjourn 2:30 p.m. Future TAC Meetings  October 4, 2012  November 1, 2012

Open Action Items from Previous Meeting(s) Responsible Party  8/5/10 – Creation of operational checklist for Resource interconnection. ROS  12/6/10 – Stabilization Action Items: o Review RUC Allocation Methodology & report back to March TAC WMS o Review Market Data Transparency SLA for possible improvements MIS UG (originally assigned to NATF) o Review RUC reporting (originally assigned to NATF) MIS UG  8/4/11 - NPRR340, Introduction and Definition of Duration-Limited TAC Resources (formerly “Unannounced HSL Test for Duration-Limited Resources”) – URGENT, tabled indefinitely to work through language.  11/3/11 - NPRR181, FIP Definition Revision, tabled. TAC  2/2/12 – With the recommended approval of NPRR432, Deployment of PRS Resources to Alleviate Anticipated Emergency Conditions, TAC directed PRS to consider capital contribution refund depreciation schedules.  2/21/12 - During ERCOT Board consideration of NPRR432, TAC was TAC requested to consider language related to repayment of capital contributions.  2/2/12 – Consider parameters for Load Resources that might be contracted to WMS alleviate anticipated Emergency Conditions pursuant to Protocol Section

9/7/12 TAC Public 2 6.5.1.1, ERCOT Control Area Authority (See NPRR432 discussion).  2/2/12 – Holistic review of Reliability Unit Commitment settlement in light WMS of recent Protocol changes.  4/5/12 – Review process and timelines to review/set CRR transaction limits in WMS future auctions (Related to changes made in NPRR449).  4/5/12 – Review impact to QSE related to individual ERS Resource WMS performance and consider need for data transparency of unit location (Related to changes made in NPRR451).  4/5/12 – Request ERCOT collect and provide data to ROS to analyze ERS ERCOT/ROS impact to system performance. (Related to changes made in NPRR451)  4/5/12 – Review price finalization and correction timelines, procedures and WMS Protocols in light of PUCT decision in Docket No. 39433 Longhorn Energy / West Oaks Energy Appeal and Complaint ERCOT's Decision to Conduct Market Resettlement.  6/7/12 – Discuss Market Participant training needs (what operational training ROS is provided and whether there is a need for a trainers working group to address any gaps).  6/28/12 - NOGRR099, SPS Procedure Changes for Consistency with TAC NERC Reliability Standards – URGENT, tabled.  6/28/12 – Provide by October TAC the following: METF o a recommendation on the scope of work and approach for a project to provide “Enhancements to the Real-Time Market” that . uses the framework of a multi-interval Real-Time Commitment and Real-Time Dispatch . takes into consideration information from the Brattle report and concepts in approved and in-flight NPRRs o a plan for a phased implementation of RTC and RTD features.  7/9/12 – Consider long-term solution for credit requirements in light of WMS revisions to System Wide Offer Cap.  6/28/12 - NOGRR095, Type 2 Special Protection System Submissions, tabled TAC/ROS and referred to ROS.

9/7/12 TAC Public 3