1. January 29, 2015 Technical Advisory Committee (TAC) Update to RMS Kathy Scott February 3, 2015 TAC Update to RMS 1

2. Election of 2015 TAC Leadership TAC Leadership for 2015 ◦ Chair Nomination:  Randa Stephenson – LCRA - Chair ◦ Vice Chair Nominations required a Run Off Election :  Adrian Brandt- Austin Energy – Vice Chair ◦. February 3, 2015TAC Update to RMS2

3. TAC Goals and New Bylaws 2015 TAC and Subcommittee Goals and Strategic Objectives: ◦ TAC 2015 Goals expected to be available for the February TAC meeting that may include some carry over from the 2014 TAC Goals ◦ Subcommittee Goals expected to be returned to TAC during the March 26, 2015 TAC Meeting ◦ Strategic Objective(s)—There are so many big ticket items/projects scheduled to be done in 2015 that TAC will need to devise a way to prioritize all these efforts.  NOTE: Smart Meter Texas PUCT Project—should ERCOT take on this scope of work ? Proposed Bylaws Amendment (Possible Vote ) ◦ New Commercial Consumer Segment added to the voting structure through the attached revised ERCOT Bylaws  Unanimously Approved by TAC February 3, 2015TAC Update to RMS3

4. TAC Approved/Confirmed: 2015 Leadership Commercial Operations Subcommittee (COPS) Chair: Michelle Trenary, Tenaska Power Services Vice Chair: John Schatz, TXU Energy Protocol Revision Subcommittee (PRS) Chair: John Varnell, Tenaska Power Services Vice Chair: Chris Lyons, Exelon Retail Market Subcommittee (RMS) Chair: Kathy Scott, CenterPoint Energy Vice Chair: Rob Bevill, Green Mountain Energy Reliability and Operations Subcommittee (ROS) Chair: Joel Firestone, Topaz Power Holdings Vice Chair: Alan Bern, Oncor Electric Delivery Wholesale Market Subcommittee (WMS) Chair: Seth Cochran, DC Energy Vice Chair: Bob Helton, GDF Suez Energy Marketing February 3, 2015TAC Update to RMS4

5. PRS Initiatives Nodal Protocol Revision Requests (NPRRs) ◦ NPRR641, Season Definition Change for Switchable Resources Reporting Unavailable Capacity  Motion to Remand NPRR641 back to PRS for additional discussions and language clarification was unanimously Approved ◦ NPRR660, Remove CRR State Change Adder  Motion: To Approve NPRR660 as submitted was Unanimously Approved by TAC ◦ NPRR669, Maintaining Frequency Responsiveness from Generation Resources Providing RRS  Motion: To Approve NPRR669 as submitted was Unanimously Approved by TAC February 3, 2015TAC Update to RMS5

6. PRS Initiatives Nodal Protocol Revision Requests (NPRRs) ◦ SCR783, Outage Scheduler Enhancements -- Group 2, Usability and Filtering Enhancements  Motion to Approve SCR783 and NPRR219 as recommended by PRS was unanimously approved by TAC ◦ NPRR219, Resolution of Alignment Items A33, A92, A106, and A150 - TSPs Must Submit Outages for Resource Owned Equipment and Clarification of Changes in Status of Transmission Element Postings  Motion to Approve SCR783 and NPRR219 as recommended by PRS was unanimously approved by TAC February 3, 2015TAC Update to RMS6

7. PRS Initiatives Nodal Protocol Revision Requests (NPRRs) ◦ Bundling Options for NPRR626 (Vote)  Option 3  Multi-phase project  Option1delivered as Phase 1  Timing of Phase 1 – June 27-June 28  NPRR595 delivered as Phase 2  Timing of Phase 2 – Sept 12- Sept 13  Project Cost – 1.2 Million  Motion to Endorse PRS’ recommendation to support Option 3 – Motion Approved by TAC Approved with 6 Abstentions. February 3, 2015TAC Update to RMS7

8. Withdrawals and/or Tabled Revisions Request Previously Tabled at TAC (Possible Vote): ◦ NPRR642, Constraint Management During Energy Emergency Alerts  Continued to be Tabled at TAC awaiting NOGRR language ◦ NPRR646, Emergency Operations Settlement for CFC (formerly Emergency Operations Settlement for CFC Testing) –  Removed from “Table” and Unanimously Approved by TAC February 3, 2015TAC Update to RMS8

9. Wholesale Market Subcommittee (WMS) ◦ RUC Task Force Update  Disbanded and any outstanding items related to RUC for extreme cold weather events were moved to the QSE Managers Working Group (QMWG) ◦ Supply Analysis Working Group (SAWG) Update  Working with ERCOT to develop multiple draft NPRR(s) one for Multi- Interval Real Time Market, another one for Real Time Co-Optimization. Reliability Operations Subcommittee (ROS) ◦ RRGRR005, Clarify Data Necessary for Planning Models  Unanimously Approved by TAC ◦ NOGRR136, Verifying QSE Capability to Operate in CFC  Motion to Table NOGRR136 awaiting Board action on NPRR646 in February was Approved ◦ NOGRR140, Posting of the ERCOT Geomagnetic Disturbance Operating Plan - Unanimously Approved by TAC February 3, 2015TAC Update to RMS9 WMS and ROS Initiatives

10. Reliability Operations Subcommittee (ROS) ◦ Economic Impacts of Outage Scheduling – Taskforce:  ERCOT requested a new taskforce be created to evaluate market impacts related to equipment outage scheduling.  Workshop scheduled on February 2, 2015 to better define the issue and develop the taskforce scope for presentation at next ROS.  Taskforce will be a joint effort by ROS and WMS.  ROS/WMS: Coordination of efforts requested of ROS and WMS leadership by TAC leadership February 3, 2015TAC Update to RMS10 ROS Initiatives (cont.)

11. Commercial Operations Subcommittee (COPS) Update Only - Retail Market Subcommittee (RMS): ◦ RMGRR127, Efficiencies for Acquisition Transfer  Unanimously Approved by TAC February 3, 2015TAC Update to RMS11 COPS and RMS Initiatives

12. Ancillary Services Re-design Update Ancillary Services Re-design Update ◦ NPRR667 – Ancillary Service Redesign NPRR667 – Impact Analysis (Both Posted)  Comments were due by January 21, 2015 and ERCOT received several comments from Market Participants. ◦ NPRR667 Workshop scheduled for Friday, January 30, 2015 at 9:30 AM – 4:00 PM  http://www.ercot.com/calendar/2015/1/30/32017-WORKSHOPS http://www.ercot.com/calendar/2015/1/30/32017-WORKSHOPS February 3, 2015TAC Update to RMS12

13. ERCOT Operations, Planning & IT Report Jones Creek RPG Project Independent Review (Possible Vote) ◦ Motion to Approve Option B as recommended by ERCOT was Approved with 2 abstentions Protocol Required Review: Section 6.4.4.1, Energy Offer Curve for RUC – Committed Resources report and update only: February 3, 2015TAC Update to RMS13

14. Questions? 14February 3, 2015TAC update to RMS