1. MISUG Meeting Materials Jackie Ashbaugh/Jamie Lavas ERCOT 1/13/2011

2. 2 MISUG1/13/2011 ERCOT Antitrust Admonition ERCOT strictly prohibits Market Participants and their employees who are participating in ERCOT activities from using their participation in ERCOT activities as a forum for engaging in practices or communications that violate the antitrust laws. The ERCOT Board has approved guidelines for members of ERCOT Committees, Subcommittees and Working Groups to be reviewed and followed by each Market Participant attending ERCOT meetings. If you have not received a copy of these Guidelines, copies are available at the Client Relations desk. Please remember your ongoing obligation to comply with all applicable laws, including the antitrust laws. Disclaimer All presentations and materials submitted by Market Participants or any other Entity to ERCOT staff for this meeting are received and posted with the acknowledgement that the information will be considered public in accordance with the ERCOT Websites Content Management Operating Procedure.

3. 3 MISUG1/13/2011 Agenda

4. 4 MISUG1/13/2011 Purpose of 1/13/2011 Meeting Discuss Scope of MIS User Group Overview of ERCOT data access points Average usage statistics to date for extracts/reports For the scope topics listed on slides 5-9: –Review market issues captured to date –Capture any other market issues –Brainstorm market changes –Assign work to appropriate market forum –Prioritize market issues and proposed changes Assignment of issues to market group Protocol and Operating Guide changes

5. 5 MISUG1/13/2011 Scope of MISUG Methods of Data Access Access/Security Classifications Extracts and Reports Participants should include users of the ERCOT data access points and data provided to the market from both a business and IT perspective.

6. 6 MISUG1/13/2011 Scope of MISUG Methods of Data Access –Public access points – anyone with internet access: –www.ERCOT.comwww.ERCOT.com –http://planning.ercot.com/login/login - Planning and Operations Information (if registered)http://planning.ercot.com/login/login –Secure and Certified access points – require a digital certificate: –MIS – used by all markets for data services and downloads »MMUI/Market Manager User Interface »OSUI/Outage Scheduler User Interface –External Web Services (EWS) – used by Wholesale Market »GetReport EWS – used by all markets to download reports –Up for decommission: »FTP – used for one report posting and Retail transaction submissions and LRS data transfers; decommission would be for the report posting piece only »TML – used by Retail Market for data services, downloads and transaction services »Commercial API – used by Retail Market for data services and downloads

7. 7 MISUG1/13/2011 Scope of MISUG (continued) Methods of Data Access - continued –UI displays –Usability/Navigation –Performance/Traffic –Dashboards –Posted notifications –EWS Alerts and Notifications Priority messaging Subscription services –Extract Subscription services –Market Data Transparency SLA –Available documentation –Training

8. 8 MISUG1/13/2011 Scope of MISUG (continued) Access/Security Classifications –Protocols Section 12 language –Public postings – www.ERCOT.com and MIS public areawww.ERCOT.com –Secure and Certified postings on MIS –Non-MP digital certificates to access MIS SECURE data NPRR 260 - http://www.ercot.com/mktrules/issues/nprr/251- 275/260/indexhttp://www.ercot.com/mktrules/issues/nprr/251- 275/260/index

9. 9 MISUG1/13/2011 Scope of MISUG (continued) Extracts and Reports –ERCOT Market Information List (EMIL) - http://www.ercot.com/services/mdt/ http://www.ercot.com/services/mdt/ –Use of extracts and reports Certified extract subscription services –Data and timing changes to existing extracts and reports –New extracts and reports –Recommendations for extract/report removals –Available documentation –Training

10. 10 MISUG1/13/2011 ERCOT Website Traffic Statistics

11. 11 MISUG1/13/2011 # of ERCOT postings on a daily basis

12. 12 MISUG1/13/2011 # downloads on a daily basis

13. 13 MISUG1/13/2011 # downloads on a daily basis by security classification

14. 14 MISUG1/13/2011 Top 10 posted downloads

15. 15 MISUG1/13/2011 Most generated report at ERCOT – QSE Ancillary Services Capacity Monitor Report CERTIFIED report that is generated every 5 minutes in both CSV and XML are created for each participant for each posting interval producing over 44,000 files a day and produced for < 100 QSEs with resources.

16. 16 MISUG1/13/2011 Things to consider… What data does your company need that you cannot get to today? Is your company’s download behavior in line with the ERCOT Market Data Transparency SLA? What is a priority for data/notifications/alerts? Do you understand what tools are available to you and how to use them?

17. 17 MISUG1/13/2011 Brainstorming/discussion on identified market changes Brainstorming and discussion session on identified market changes –Assign work into logical groups –Has anyone started drafting any NPRRs or OGRRs? –Prioritization of work within logical groups

18. 18 MISUG1/13/2011 Next Steps Schedule upcoming meetings