1. MISUG Meeting Materials ERCOT 4/28/2011

2. 2 MISUG4/28/2011 Agenda 1.Antitrust AdmonitionJ. Lavas9:30 a.m. 2.IntroductionJ. Lavas9:35 a.m. 3.Market Data Transparency Statistics – MarchJ. Ashbaugh9:45 a.m. 4.Updates on NPRRs and SCRs – collect CBA information NPRR329 Security Classification Changes SCR764 Public Access to Select MIS Dashboards NPRR350 Change to the Security Classification of the System Ancillary Service Capacity Monitor Dashboard SCR765 Aggregate Wind Dashboard J. Ashbaugh/ T. Anderson 10:00 a.m. 5.Review ERCOT Secure MIS contentJ. Ashbaugh11:00 a.m. 6.Draft NPRRs and SCRs from 3/31 report requirements Aggregate Wind Output Report (#63) Monthly TDSP Load by LSE Report (#55) Sum of HDLs/LDLs Report (#48) Unconfirmed Trades Report (#29) J. Ashbaugh11:30 a.m. Lunch12:00 p.m. 7.Continue with Agenda item #6J. Ashbaugh1:15 p.m. 8.New Reports - collect market requirements HRUC after approval (RUCVDI) (#4) DC Tie Schedules Report (#56) Historical Load Zone/Hub Price Report (#9) Load Reporting (#65) J. Ashbaugh2:15 p.m. 9.MISUG task list priorities reviewJ. Ashbaugh3:15 p.m. 10.Other BusinessAll3:30 p.m. 11.5/24/2011 Agenda TopicsAll3:45 p.m. 12.Adjourn4:00 p.m.

3. 3 MISUG4/28/2011 Market Data Transparency Statistics - March

4. 4 MISUG4/28/2011 ERCOT Website Page Views – March 2011

5. 5 MISUG4/28/2011 External Web Services Market Transactions – March 2011

6. 6 MISUG4/28/2011 External Web Services Market Info Reports – March 2011

7. 7 MISUG4/28/2011 External Web Services Alerts/Notifications – February 2011 Note: 3/11/2011 spike - MMS Energy Trade Notifications issue from a resolved defect on 12/9/2010 was reintroduced and fixed same day.

8. 8 MISUG4/28/2011 External Web Services Alerts/Notifications – March 2011

9. 9 Extract & Report Postings ERCOT Board of DirectorsApril 19, 2011 Market Extract & Report Postings Run on Apr 6, 2011 12:24:47 PM Start Date:March 1, 2011 End Date:March 31, 2011 Posting Classifications: Certified = Available only to the Market Participant owning that data Secure = Available to any Market Participant with a digital certificate Public = Available to all Market Participants & general public (via ERCOT.com) TOTAL POSTINGSTOTAL FILE SIZE (GB) 1,675,875173.87 Note: reduction that began 3/23 was due to turning off the xml format of a 5-min report that is also provided in csv format

10. 10 Extract & Report Postings ERCOT Board of DirectorsApril 19, 2011 Top 10 Market Extract & Report Postings Run on Apr 5, 2011 2:01:22 PM Start Date:March 1, 2011 End Date:March 31, 2011

11. 11 Extract & Report Downloads ERCOT Board of DirectorsApril 19, 2011 Market Extract & Report Downloads Run on Apr 5, 2011 2:55:58 PM Start Date:March 1, 2011 End Date:March 31, 2011 Posting Classifications: Certified = Available only to the Market Participant owning that data Secure = Available to any Market Participant with a digital certificate Public = Available to all Market Participants & general public (via ERCOT.com) TOTAL DOWNLOADSTOTAL FILE SIZE (GB) 20,689,8781,286.65

12. 12 Extract & Report Downloads ERCOT Board of DirectorsApril 19, 2011 Top 10 Market Extract & Report Downloads Run on Apr 5, 2011 1:58:20 PM Start Date:March 1, 2011 End Date:March 31, 2011

13. 13 MISUG4/28/2011 Review ERCOT Secure Content 20110428_Agenda_5_MISUG_Secure_posting_list.xls

14. 14 MISUG4/28/2011 Updates on NPRRs and SCRs – collect CBA information

15. 15 MISUG4/28/2011 NPRR329 Security Classification Changes Submitted: 2/23/2011 URGENT PRS vote: 2/25/2011 approved PRS meeting: 3/24/2011 Approved with TIEC, ERCOT and PRS comments. Changes from original submission include: State Estimator Load Reports will not move to PUBLIC State Estimator Load Reports require changes to remove single customer load data ERCOT addressing the removal of PUNs Recommended Priority: Critical Rank: 9.2 TAC meeting: 4/7/2011 approved BOD meeting: 4/19/2011 approved Planned Implementation: May 2011

16. 16 MISUG4/28/2011 SCR764 Public Access to Select MIS Dashboards Posted: 4/7/2011 URGENT WMS vote: 4/7/2011 approved PRS meeting: 4/21/2011 Recommended approval as revised by ERCOT comments and PRS. Includes SCED Up/Down, LMP Contour Map, Load Forecast vs. Actual, LMP Ticker with selected prices, and Real-Time System Conditions Recommended priority of Critical and Rank of 9.2.1. Next Stop: TAC 5/5/2011

17. 17 MISUG4/28/2011 NPRR350 Change to the Security Classification of the System Ancillary Service Capacity Monitor Dashboard Posted: 4/11/2011 URGENT PRS vote: 4/13/2011 failed PRS meeting: 4/21/2011 Granted Urgent status. Recommended approval as submitted and forward to TAC. Next Stop: TAC 5/5/2011 IA will be reviewed for priority and rank.

18. 18 MISUG4/28/2011 SCR765 Aggregate Wind Dashboard Posted: 4/18/2011 URGENT WMS vote: 4/20/2011 failed Next Stop: WMS 5/11/2011 Re-requesting urgency.

19. 19 MISUG3/31/2011 Draft NPRRs and SCRs from 3/31 report requirements

20. 20 Draft NPRRs and SCRs for report requirements MISUG3/31/2011 Aggregate Wind Output Report (#63) Monthly TDSP Load by LSE Report (#55) Sum of HDLs/LDLs Report (#48) Unconfirmed Trades Report (#29)

21. 21 MISUG4/28/2011 New Reports - collect market requirements

22. 22 MISUG4/28/2011 New Reports – collect market requirements Business Requirement Extract and Report Specification.xls HRUC after approval (RUCVDI) (#4) DC Tie Schedules Report (#56) Historical Load Zone/Hub Price Report (#9) Load Reporting (#65)

23. 23 MISUG4/28/2011 Review MISUG task list priorities

24. 24 MISUG4/28/2011 NPRR 299 Remove Requirement for ERCOT Board Approval of PUCT, IMM, and FERC Required Reports – capture market benefits, review requirements, discuss process Discuss market requirements: –Daily Grid Operations Report –Non-Spin Notifications - change to receive via ICCP –NDCRC - where season HSL and VAR tests –Weather data assumptions for DAM (new dashboard) –System ACE –Sum of HDLs and LDLs –SCED Up/Down dashboard – merge to be on same axis Discuss draft NPRRs/SCRs: –Alerts & Notifications changes –Reports from 4/28 meeting May Meeting Topics

25. 25 MISUG4/28/2011 Questions