1. http://nodal.ercot.com 1 Market Trials Release 2.1 Market Participant Connectivity Testing Kick Off Meeting October 8, 2009

2. http://nodal.ercot.com 2 Antitrust Admonition 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. http://nodal.ercot.com 3 Agenda Nodal Release 2.1 Kick-Off –Release 2.1 Connectivity Testing Objective and Scope –Nodal Production Environment ERCOT Support Access / Location Common Information Model / Data Set –Communications Plan / Issue Management –Handbook Overview Market Participant Web Service and User Interface Qualification –Voluntary, Early Re-Qualification –Mandatory Qualification Window –New Participant Qualification –Dashboard Overview of the Market Manager User Guide Overview of the EIS (External Interfaces Specification) Focused Input Testing (FIT) Windows and Telemetry Data Quality Market Trials 2010 Roadmap

4. http://nodal.ercot.com 4 Schedule Overview MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR 2009 Verifiable Costs Training on NOMCR Submission of Verifiable Costs for Resources (different dates for technologies) Resource Registration PUNS Transmission asset registration Telemetry and SE Focused Input Testing (Telemetry and SE) Submission Testing SCED & DAM Publish v1.19 Sandbox v1.19 Limited Nodal Production Released to Market Network Model SEM Go-Live Milestone TSP model synchronization COMS Extracts User Guide release Reporting Remaining RE’s Transmission asset registration NDSML and extract supporting documentation updates Release 2.1 QSE Connectivity Testing MP Nodal Re- qualification Make-up sessions Integrated Market Trials Roadmap 2010

5. http://nodal.ercot.com 5 Release 2.1 Connectivity Testing Objective and Scope On October 28, 2009, ERCOT will perform a limited release of the Nodal Production environment to support the defined scope of Market Trials 2.1 Market Participant Connectivity Testing Objective of Release 2.1 –Provide an environment for Market Participants to test core submissions over the ERCOT web services and Market Manager User Interface –Allow ERCOT to perform an incremental build-out of the Nodal Production environment in preparation for full Market Trials in 2010 –Continued improvement of established QSE and TSP telemetry data quality

6. http://nodal.ercot.com 6 Release 2.1 Connectivity Testing Objective and Scope Scope of the 2.1 MMS (Market Management System) release will be limited to the following transactions and Phase 1 validations (which are detailed in the Explanation of Market Submission Items document found at http://nodal.ercot.com/readiness/mt21/index.html): http://nodal.ercot.com/readiness/mt21/index.html –Real-Time Current Operating Plan Energy Offer Curve Output Schedules Incremental/Decremental Offer Curves –Day-Ahead / Other submission Three Part Offers Ancillary Service Offers Energy-only Offers and Bids Trades (Energy, Ancillary Service, Capacity) Self-Arranged Ancillary Services CRR Offers PTP Obligation Bids Self Schedules DC Tie Schedules Resource Parameters

7. http://nodal.ercot.com 7 Release 2.1 Connectivity Testing Objective and Scope (continued) Continued support for 2.1 release are the bi-weekly (FIT) Focused Input Testing windows –These will continue along with the Nodal Telemetry Outreach program –The Nodal Telemetry Outreach program’s objective is to continue to resolve issues and improve data quality for State Estimator and, eventually, SCED solutions

8. http://nodal.ercot.com 8 Release 2.1 Connectivity Testing Objective and Scope (continued) Out of Scope (not limited to the following) : –Other functionality (e.g. outage scheduling, getReports, etc) Although other systems and features may be included in the release, ERCOT continues to perform testing on these and will not be supported –MMS generated notices (e.g. Phase 2 validation notices) ERCOT may release some MMS generated notices to the environment. These should be ignored by MP’s until ERCOT attests that they are supported –Real Time Market (SCED) and Day Ahead Market: The Nodal Production environment may be leveraged on unsupported days* to run markets in test mode only, however, these will not be run in a supported or market facing capacity. Note that in cases where one or both of these markets are run during 2.1, ERCOT will likely use system generated inputs from lower testing environments. To avoid market timeline limitations associated with DAM/Phase 2 validation, ERCOT recommends that all test submissions be for current day +2 (e.g. submissions made on a Tuesday shall be for Thursday’s trade date)

9. http://nodal.ercot.com 9 Nodal Production Environment - ERCOT Support Nodal Production Environment Status –Release 2.1 is an early release of the Nodal Production Environment –ERCOT continues to perform Integration and Performance Testing –It is expected that issues will be found during 2.1 by both, ERCOT and the Market Participants The following bullets detail ERCOT’s support plan for this phase, recognizing the primary environment goal of this phase of Market Trials is system connectivity for Market Participant’s development and testing, not performance or data retention –Support Windows The Market Trials 2.1 environment will be actively supported Tuesday through Thursday, from 9:00 am to 6:00 pm The Nodal Production environment will remain accessible outside of these support windows, however there is no guarantee of system stability or accessibility ERCOT will utilize unsupported time periods to perform system maintenance, planned / unplanned releases as well as performance testing Transactions submitted to ERCOT may be periodically deleted outside of supported windows

10. http://nodal.ercot.com 10 Nodal Production Environment - ERCOT Support –Outage and Restoration In the event of an outage or significant degradation in performance during an active support window, ERCOT will send a market notice followed by periodic status updates as they are available. The expected restoration time for outages will be on a ‘as soon as possible’ basis Note that planned outages outside the active support window will be communicated as appropriate on a bi-weekly basis during the Friday Market Participant calls.

11. http://nodal.ercot.com 11 Nodal Production Environment – Access / Location Following are the URL’s to be used during Connectivity Testing –Market Manager User Interface: https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action –Web Services Endpoint: https://misapi.ercot.com/2007-08/Nodal/eEDS/EWS https://misapi.ercot.com/2007-08/Nodal/eEDS/EWS Authentication –Users that currently have an ERCOT production digital certificate, will continue to use this certificate in the Nodal Production Environment –Users that do not have an ERCOT production digital certificate should request one from their company’s USA (User Security Administrator) –New Market Participants will obtain certificates via the ERCOT registration process Authorization (Roles) –On August 28 th, 2009, ERCOT released Nodal Roles to the production MPIM (Market Participant Identity Management) system –Market Participant USA’s must assign the appropriate role to users that will be testing in the Nodal Production environment –See next slide for a list of Nodal Roles

12. http://nodal.ercot.com 12 Nodal Production Environment – Access / Location Authorization (Roles) – continued –Listing of Nodal Roles (green = required for 2.1 connectivity testing): –Note that certificates to be used for the Web Services Interface need to have the API Certificate checkbox checked CRR_EXTRACTSViews CRR certified Extracts PB_MyPage1Allows an MP to have access to one My Page PB_MyPage2Allows an MP to have access to two My Pages MMS_REVIEWERReviews market submissions on behalf of the QSE MMS_TRADERCreates and reviews market submissions on behalf of the QSE MP_CRR_Account_HolderParticipates in CRR market activities; including nominating, buying, selling or trading of CRRs MP_CRR_CounterPartyAssigns credit limit to upcoming CRR market activities NMMS_MODSubmits modifies and views any PMCRs for the TSP QSE_W Submits, modifies any Outage of the Resource Category for which the Requestor's Organization is the Resource's master owner; can view any Outage of the Resource Category for which the Requestor's Organization is at least a partial owner but not the Master QSE_R Views Outages of the Resource Category for which the Requestor's Organization is the Resource's master owner of partial owner. TSP_W Submits, modifies, and views any Outage of the Transmission Category the requestor's organization submits. Can view any Outage. TSP_RViews any Outage

13. http://nodal.ercot.com 13 Nodal Production Environment – Common Information Model / Data Set Release 2.1 Network Model / Common Information Model (CIM) –ERCOT will update the CIM for the 10/28 release –This version of the CIM will reflect data as of 9/14/09 –Settlement Points and Market Participant Short Names extracted from the 9/14 CIM have been posted to the Release 2.1 readiness center: http://nodal.ercot.com/readiness/mt21/index.html http://nodal.ercot.com/readiness/mt21/index.html

14. http://nodal.ercot.com 14 Communications Plan / Issue Management Bi-weekly Conference Calls: –ERCOT’s primary tool for communicating updates, status and general information will occur on the bi-weekly Friday Market Trials Market Call. –Information on how and when to attend these conference call / WebEx sessions is posted here: http://www.ercot.com/committees/nodal/eds/http://www.ercot.com/committees/nodal/eds/ Emails / Phone Calls to Individual Market Participants: –All communication regarding Market Participant – specific information will be routed through the Nodal Project Manager as identified in the Nodal Market Contacts spreadsheet –A copy of that spreadsheet may be found at: http://nodal.ercot.com/readiness/notices/2009/09/11/09112009_nodal_updati ng_nodal_contact_information.doc http://nodal.ercot.com/readiness/notices/2009/09/11/09112009_nodal_updati ng_nodal_contact_information.doc –If you wish to view what contacts are currently on file, please send an email to nodalmarkettransition@ercot.com to request populated version of the spreadsheet.nodalmarkettransition@ercot.com

15. http://nodal.ercot.com 15 Communications Plan / Issue Management Emails to ERCOT: –At any point during the testing questions can be emailed to eds3@ercot.comeds3@ercot.com Release 2.1 Readiness Center Website –The Nodal Readiness Center will continue to be leveraged for any required documents MP’s will need to reference –Currently posted to the Release 2.1: MMS - Explanation of Market Submission Items v0.26 Market Participant Short Names Settlement Points as of 9/14/2009 Market Connectivity Testing MP Handbook Market Manager User Guide Phase 2.1 Testing – Known Issues –Release 2.1 Readiness Center URL: http://nodal.ercot.com/readiness/mt21/index.htmlhttp://nodal.ercot.com/readiness/mt21/index.html

16. http://nodal.ercot.com 16 Communications Plan / Issue Management Issue Management – Market Participant Discovered Issues –Market Participants will report all issues using the eds3@ercot.com distributioneds3@ercot.com –ERCOT will perform triage and determine root cause –If determined to be a variance / defect, ERCOT will leverage our existing defect management process to estimate, analyze and prioritize the resolution –Additionally, for Release 2.1, ERCOT will maintain a known issues spreadsheet on the Nodal Readiness center Will be updated every Friday by EOB (note that if no new known issues are discovered, the spreadsheet will remain static) Will only detail those issues affecting the scope of Release 2.1 and any work- arounds available to avoid issues Will be posted and maintained at: http://nodal.ercot.com/readiness/mt21/index.htmlhttp://nodal.ercot.com/readiness/mt21/index.html Known issues will be added as a standing agenda item on the bi-weekly Market Trials Market Call

17. http://nodal.ercot.com 17 Communications Plan / Issue Management Issue Management – ERCOT Discovered Issues –Issues discovered by ERCOT will follow the same process –As previously stated, ERCOT will only communicate those issues affecting the scope of 2.1 –As we near the next major release, ERCOT will begin to report on issues affecting that scope as well

18. http://nodal.ercot.com 18 Market Participant Web Service and User Interface Qualification ERCOT will qualify QSEs based on their proven ability to submit, query and cancel the specified market transactions –QSE w/ Resources: Web Services –QSE w/o Resources: Web Services or Market Manager Voluntary, early re-qualification / qualification –QSEs may elect to qualify early from Oct 28 – Dec 04 –If interested, send an email to eds3@ercot.comeds3@ercot.com Mandatory qualification will take place between Jan. 4, 2010 and Jan. 28, 2010

19. http://nodal.ercot.com 19 Market Participant Web Service and User Interface Qualification QSEs who completed qualification during the 2007/2008 market trials: –Will self-qualify and are not required to conduct a two-hour conference call with a member of the Market Trials testing team. –Self-qualification will consist of completing a transaction checklist (see sample – next slide) stating the date / time of each submittal –Send completed checklists to eds3@ercot.com for verificationeds3@ercot.com New QSEs (since 2008) –Will qualify during a conference call with the Market Trials team –These QSE’s will be able to pose questions and be supported through the conference call –Typical conference call will last 1 – 2 hours –QSEs that have qualified previously may exercise this conference call as an option

20. http://nodal.ercot.com 20 Market Participant Web Service and User Interface Qualification Sample checklist: –Note that the far right column details who that transaction applies to –Blank cells indicate that transaction applies to all QSE’s –Qualification will be tracked via a dashboard posted weekly to http://nodal.ercot.com/readiness/mt21/index.html http://nodal.ercot.com/readiness/mt21/index.html –Note that CRR and Outage Scheduling qualification will be tracked separately These will be detailed in the applicable handbooks.

21. http://nodal.ercot.com 21 Market Manager User Guide Walk-Through Market Manager has been completely redesigned since 2008 Highlights: –Client side validation –Submission success message displayed on screen (do not have to retrieve on the notices tab) –Additional features such as ‘query for existing submission’ prior to creating new submission –Read-only role available –New copy/paste functionality –Wild-card search User Guide has been posted: http://nodal.ercot.com/readiness/mt21/index.html http://nodal.ercot.com/readiness/mt21/index.html

22. http://nodal.ercot.com 22 Market Manager User Guide Walk-Through This version of the User Guide will cover: System Requirements Common System Features –General Navigation –Refresh Button –Copy Tool Trades –Confirmed/unconfirmed Trades –Create, update cancel or confirm Energy, Capacity and AS Trades Resource-Specific Submissions –Create and update a COP –Create, update and cancel a Three-Part Offer –Create, update and cancel an Output Schedule –Create, update and cancel an AS Offer –Create, update and cancel an Inc or Dec Energy Offer Curve Bids and Offers –Create, update and cancel DAM Energy- Only Offer –Create, update and cancel a CRR Offer –Create, update and cancel a DAM Energy Bid –Create, update and cancel a PTP Obligation Bid Schedules –Create, update and cancel Self Schedule Self-Arranged AS –Create, update and cancel Self-Arranged AS Resource Parameters Notices * Verbal Dispatch Instructions (VDIs) * * NOTE: These items, while covered in the User Guide, will not be supported during this phase of market trials.

23. http://nodal.ercot.com 23 Market Manager User Guide Walk-Through Market Manager defaults to the Trades landing page, where you can query for trades or create new ones

24. http://nodal.ercot.com 24 Market Manager User Guide Walk-Through If there are initial errors with your submission, you will be informed in red on the page. Correct and resubmit.

25. http://nodal.ercot.com 25 Market Manager User Guide Walk-Through After submitting, the status is displayed and highlighted on the page.

26. External Interfaces Specification External Interfaces Specification document describes how to interact with ERCOT using machine-to-machine interface v1.19 posted on the Readiness Center at http://nodal.ercot.com/readiness/sandbox/documents/index.html http://nodal.ercot.com/readiness/sandbox/documents/index.html Content/organization of document 1.Services Organization 2.Market Transaction Service 3.Market Information 4.Notifications 5.Acknowledgement of Alerts 6.Outage Scheduling Interfaces 7.Utility Interfaces 8.Reports 9.Resource Parameter Transaction Service 10.Registration Interfaces 11.Verbal Dispatch Instructions http://nodal.ercot.com 26

27. 6/5/2016 http://nodal.ercot.com 27 Focused Input Testing (FIT) Windows and Telemetry Data Quality

28. 6/5/2016 http://nodal.ercot.com 28 Focused Input Testing (FIT) Windows and Telemetry Data Quality Discussion Topics:  FIT Windows  Background / Recent Changes / Remaining FIT Windows  Nodal Telemetry Outreach  Background  FAQ  The ERCOT timeline for requesting telemetry  Telemetry Resources and Links  Appendix Section  Examples of TSP/QSE reports for Nodal Telemetry Outreach emails  A breakout of SE and SCED telemetry as required by the ICCP Handbook  Telemetry Issue Resolution and ICCP Change Process Diagrams

29. 6/5/2016 http://nodal.ercot.com 29 FIT Windows FIT Windows – Background:  The FIT III series provides bi-weekly testing windows featuring support during Business Hours to evaluate overall telemetry quality and State Estimator (SE) convergence rates. The objective of FIT windows is to measure the ability of ERCOT and Market Participants (MP) to maintain the quality of telemetry achieved to date and to carry it forward into Market Trials.  The current FIT III Series of tests began in February 2009 and is currently scheduled to run through December 2009.  Market Notices are distributed prior to each FIT window to confirm upcoming test dates and telemetry requirements.

30. 6/5/2016 http://nodal.ercot.com 30 FIT Windows FIT Windows – Recent Changes to FIT Testing:  ERCOT discontinued making ERCOT-side Manual Replacements (MRs) on September 10 during the FIT III Week 15 window (Sept 8 – 10).  The ERCOT SE continued to solve during the testing hours with convergence rates comparable to those achieved during previous FIT windows. Factors contributing to this success included:  SE code enhancements  ICCP updates submitted by MPs  Robustness of the SE software  The SE convergence performance on Sept 10 promotes confidence that the SE software has matured to a point that ERCOT may continue to conduct future FIT windows without the need to facilitate SE solutions via ERCOT-side MRs.

31. LFC6/5/2016 FIT Series WeekDateDay 1Day 2Day 3Convergence Avg % for all Test Hours 100% Convergence Achieved FIT IIIWeek 1Feb 24 – 26, 200975.4578.8692.8582.3909 of 27 hrs Week 2Mar 10 – 12, 200996.8292.9798.4196.0720 of 27 hrs Week 3Mar 24 - 26, 200985.4594.9894.7091.7114 of 27 hrs Week 4Apr 07 - 09, 200997.1392.6097.4495.7221 of 27 hrs Week 5Apr 21 – 23, 200987.4789.8795.6591.0008 of 27 hrs Week 6May 05 – 07, 200994.3494.4791.8793.5613 of 27 hrs Week 7May 19 – 21, 200996.8197.3697.0497.0718 of 26 hrs* Week 8Jun 02 – 04, 200988.4784.0993.2988.6210 of 27 hrs Week 9Jun 16 – 18, 200997.4586.1495.5993.0613 of 27 hrs Week 10Jun 30 – Jul 2, 200994.9189.8986.6690.4911 of 27 hrs Week 11Jul 14 – 16, 200991.0184.7097.4991.0614 of 27 hrs Week 12Jul 28 – 30, 200995.9194.7393.6694.7718 of 27 hrs Week 13Aug 11 – 13, 200994.7294.6597.3795.5819 of 27 hrs Week 14Aug 25 – 27, 200996.5193.2599.0796.2821 of 27 hrs Week 15Sep 08 – 10, 200990.6010096.3395.6421 of 27 hrs Week 16Sep 22 – 24, 200989.4299.0796.3094.9320 of 27 hrs FIT Windows 31 No ERCOT-side Manual Replacements were made on these test days.

32. http://nodal.ercot.com 32 FIT Windows FIT Windows – Remaining 2009 Dates:  The current FIT III Series is scheduled to run through Dec 2009.  In January 2010, daily telemetry support during Business Hours begins. Name of FIT III Test *Testing Dates FIT III, Wk 17Oct 06 – 08 FIT III, Wk 18Oct 20 – 22 FIT III, Wk 19Nov 03 – 05 FIT III, Wk 20Nov 17 – 19 FIT III, Wk 21Dec 01 – 03 * Note: FIT III, Wk 22, was cancelled (previously scheduled for Dec 15 – 17).

33. http://nodal.ercot.com 33 Nodal Telemetry Outreach Nodal Telemetry Outreach – Background:  ERCOT began a Nodal Telemetry Outreach on August 31, 2009 to help MPs to correct Nodal telemetry issues in time for 2010 integrated Market Trials.  Regularly occurring email communications began the week of Oct 5.  Emails being sent to MP Technical Contacts and Nodal Accountable Executives:  Email distributions will be announced via nodal market notices.  Email distributions will be coordinated to align with FIT windows through Dec 2009. In 2010, emails will continue to be distributed on a regular basis and coordinated around nodal production-environment loads and Readiness Scorecard refreshments.  Emails will initially focus on missing nodal telemetry but will eventually address data-quality issues as well.

34. http://nodal.ercot.com 34 Nodal Telemetry Outreach FAQ: What is included in a Nodal Telemetry Outreach email?  For QSEs, emails include:  A report of the remaining analog and status values that need to be provided for nodal  For TSPs, emails include:  A report of the remaining analog and status values that need to be provided for nodal  One lines as needed to communicate critical measurements required for observability  Examples have been provided in the Appendix section.

35. http://nodal.ercot.com 35 Nodal Telemetry Outreach FAQ: What telemetry is being requested?  Nodal Telemetry Outreach emails will request TSPs/QSEs to submit all nodal telemetry as required by the ERCOT Nodal ICCP Communication Handbook.ERCOT Nodal ICCP Communication Handbook FAQ: When is this telemetry required?  Although all nodal telemetry identified in the ICCP Handbook is required and MPs are encouraged to submit it as soon as possible, ERCOT will take a phased approach in requesting it.  Through Dec 31, 2009, ERCOT will request that MPs send the telemetry that is required to support State Estimator testing during FIT windows.  Starting in Jan 2010, ERCOT will request that MPs send all other required telemetry in support of SCED.  For any MPs who are able to send ICCP data early for SCED, ERCOT is requesting that they provide it during the remaining 2009 FIT windows so that it may be used in ERCOT’s nodal ITEST environment to better assess the quality of the SCED solution prior to Market Trials.

36. http://nodal.ercot.com 36 Nodal Telemetry Outreach FAQ: Which telemetry is required for SE and which is required for SCED? SESCED For QSEsGeneration Unit Gross & Net Power Flow in MW/MV ■ Generation Unit Net Power Flow in MW/MV ■ Breaker & AVR Status ■ All other telemetry as required per the ICCP Communication Handbook ■ For TSPsAll telemetry as required per the ICCP Communication Handbook ■  For QSEs, the telemetry required for SE includes:  Gross & Net Power Flow (MW/MV)  Breaker & AVR Status  All other telemetry required from QSEs will be requested to support SCED.  For TSPs, the telemetry required for SE includes:  All TSP telemetry identified in the ICCP Handbook.  A breakout of SE and SCED telemetry required by the ICCP Handbook has been provided in the Appendix Section.

37. http://nodal.ercot.com 37 Nodal Telemetry Outreach FAQ: Which additional SCED telemetry is being requested for nodal ITEST prior to Jan1?  ERCOT is requesting additional ICCP data from any MPs who are able to provide it early (i.e., prior to Jan 1) to support SCED testing in ERCOT’s ITEST environment, including:  This data will be used to support SCED testing, although it is being requested during FIT windows to leverage existing times when ERCOT and MP staff are known to be available to vet telemetry issues. SCED/LFC Data RequirementsInformation Only Data  Resources Net MW (ICCP)  HSL, LSL (ICCP)  Resource Status Code (ICCP)  AS Schedules and Responsibilities (ICCP):  Reg-Up/Reg-Down  Responsive  Non-Spin  Resource Specific DSR Schedules and QSE DSR Load (ICCP)  Regulation Up/Down Participation Factors (ICCP)  Combined Cycle Configuration Number (ICCP)  Raise/Lower Block Status (ICCP)  HEL, LEL (ICCP)  Normal Ramp Rates  Emergency Ramp Rates

38. http://nodal.ercot.com 38 Nodal Telemetry Outreach SE Telemetry is Required: From Nov to Dec 2009:  MPs will send SE telemetry to meet FIT requirements and will send SCED telemetry if able.  ERCOT will use SE telemetry for metric measurement on the Readiness Scorecard and will use any available SCED telemetry to support ITEST. SCED Telemetry is Required: Starting Jan 2010:  MPs will submit SCED telemetry.  ERCOT will use SCED telemetry for metric measurement on the Readiness Scorecard. Remaining issues are addressed: From Feb 2010 forward:  ERCOT will continue the Nodal Telemetry Outreach as needed to help address remaining telemetry issues. NTO Emails Begin Week of Oct 5:  ERCOT will begin email distributions to support the Nodal Telemetry Outreach. Nodal Telemetry Outreach – The ERCOT timeline for requesting telemetry:

39. http://nodal.ercot.com 39 Nodal Telemetry Outreach Nodal Telemetry Outreach – Final Points:  The ERCOT Advanced Network Applications, ICCP, Client Services, and EDS teams have scheduled a series of weekly internal meetings through the end of 2009 to continually discuss outreach progress and coordinate follow-ups with MPs.  As the telemetry outreach effort progresses, the quality of measurements used in each SE solution is expected to improve, along with overall confidence in SE solutions.  Information regarding the outreach effort and upcoming FIT windows will continue to be communicated via market notices, stakeholder meetings, and the regularly scheduled EDS market calls (http://www.ercot.com/committees/nodal/eds/).http://www.ercot.com/committees/nodal/eds/

40. http://nodal.ercot.com 40 Telemetry Resources and Links Telemetry Resources and Links:  The ERCOT Nodal ICCP Communication Handbook is posted at http://nodal.ercot.com/readiness/eds1/documents/index.html http://nodal.ercot.com/readiness/eds1/documents/index.html  MPs may submit questions about the Nodal Telemetry Outreach effort to EDS3@ercot.com with “Nodal Telemetry Outreach” in the subject line. EDS3@ercot.com  The 2009 FIT III Calendar and FIT III Assessment reports are posted at: http://nodal.ercot.com/readiness/eds3/documents/index.html http://nodal.ercot.com/readiness/eds3/documents/index.html  The TML process for QSE ICCP Service Requests and an example of the ICCP Change Request Form are posted at: http://nodal.ercot.com/readiness/eds1/documents/index.html http://nodal.ercot.com/readiness/eds1/documents/index.html

41. 6/5/2016 http://nodal.ercot.com 41 Market Trials 2010 Roadmap

42. Market Trials Roadmap for 2010 Market Trials 2010 discussion outline –History of EDS –Market Trials Approach –Detailed view of 2010 Market Activities as Roadmap http://nodal.ercot.com 42

43. History of EDS What EDS execution occurred in 2007/2008 –Nodal 2-hour LFC test Real-Time systems controlled ERCOT system grid (2-hour LFC test) –CRR Auctions executed Annual and Monthly Auctions executed with market –DAM/DRUC/HRUC/SASM executed 2x/week for 2 months –Outage Scheduler submission testing conducted –Subset of Settlements Invoices produced –Trials stopped due to lack of integration readiness Most significant issue was no common network model in NMMS/EMS/MMS http://nodal.ercot.com 43

44. Current Market Trials Approach Project focus and milestones are aligned to track to integration and subsequent market trial milestones –Dedicated/Integrated environment in place –Execution of core systems and integration scripts being tested across upstream/downstream systems Managing inter-related activities in single view of dependencies for each release including: –Systems and specific functionality required –List of each distinct interface and discrete data flows –Process/Procedures to support data and trials –Scope includes list of applicable reports/extracts to support testing –Operational Readiness plans are included http://nodal.ercot.com 44

45. Program Milestones –Phase 2.1: Market Connectivity Project Milestones (30-day look-ahead) –Integration/Connectivity Testing/Integration Testing MMS UI: initial test cycle 100% complete MMS EWS: initial test cycle 100% complete 33 open defects (no Sev 1s) in regression test: 92% complete –Market Trials/Connectivity Testing/Market Trials External Testing Kickoff meeting Oct. 8 External interface specification document posted Phase 2.1 Market Connectivity Handbook to be posted Oct. 2 –Readiness/Market Readiness/External Outreach & Training Market Readiness Seminar Oct. 8 MP site visits begin Oct. 9 (LCRA) –Readiness/Market Readiness/Metrics Tracking & Assessment Phase 2.1 Commencement Criteria met (environment built and validated) –Readiness/Operational Readiness/Environment Configuration & Management Nodal Production environment build-out (installation, verification of 2.1 code sets): 100% (hardware installed, baseline code set on schedule); final build scheduled Oct. 16 –Readiness/Operational Readiness/Security Testing Performance testing: 50% (web service stability and loading, UI stability and loading) Security testing underway this week TAC Slide Excerpt from Oct 1 Reflecting program activities/issues being managed for milestone Technical Advisory Committee 1 October 2009

46. 2010 Market Trials Roadmap What has been done to create 2010 Market Trials Roadmap –Recognized durations and execution activities from 2008 trials –Aligned market trials sequence with Integrated Program Schedule –Developed in alignment with PMO delivery plans for phases 2.1, 3, 4, 5 Objective of 2010 Market Trials Roadmap is to provide next level of detail for program/market engagement –Details to be developed in subsequent Market Trials Handbooks http://nodal.ercot.com 46

47. Nodal 2010 Roadmap through Go-Live http://nodal.ercot.com 47

48. Nodal 2010 Roadmap - 8 month view http://nodal.ercot.com 48

49. Next Steps Sequencing and focus in 2009 to align to integrated Market Trials Reminder of Ongoing 2009 activities –RE-RARF Transmission data submission Underway to end of 2009 –TSP Validation of Network Model Underway with SEM Go-Live and goes into early 2010 –TSP/QSE Telemetry Outreach/Ramp-up Started early October, forthcoming metrics for State Estimator and SCED related telemetry –QSE Verifiable Costs filings Underway, different deadlines for technology types –QSE MMS Market Submission Testing (Market Trials Phase 2.1) Starts Oct 28, Qualification and metrics January 2010 http://nodal.ercot.com 49

50. January 2010 Market Activities Targeted Market Activities for January 2010 SCED/DAM submission qualification CRR Account Holders qualify on CRR submission ERCOT posts CRR Network Model http://nodal.ercot.com 50

51. February 2010 Market Activities Targeted Market Activities for February 2010 QSEs submit SCED offers and Real-Time submissions daily ERCOT executes SCED and posts results/reports on MIS/ICCP ERCOT notifications are active ERCOT executes “Special” Monthly Allocation and CRR Auction and posts results ERCOT posts CRR Auction Invoices QSE/TSP begins Outage Scheduler submission testing Reports supporting RTM, CRR, Outage Scheduler http://nodal.ercot.com 51

52. March 2010 Market Activities Targeted Market Activities for March 2010 ERCOT executes Monthly CRR Auction CRR bilateral trading tested LFC Open Loop Testing begins (include Emergency Base Point and Non-Spin deployments) Initial DST Test (short day for Mar 14) CIM business process operational for bi-weekly database loads ERCOT posts CRR network model for multi-month auction http://nodal.ercot.com 52

53. April 2010 Market Activities Targeted Market Activities for April 2010 Market submits Day-Ahead Market bid/offers –Late March, early April Execute DAM, DRUC, HRUC, SASM two days/week with Market Execute DAM Settlements & Publish Statements/Extracts Execute RT Settlements & Publish Statements/Extracts Outage Scheduler integration supported (MMS, EMS, NMMS) Execute "Balance of Year" Auction Execute Monthly CRR Auction ERCOT posts CRR network model for annual auction Day-Ahead reports and Settlement reports/extracts http://nodal.ercot.com 53

54. May 2010 Market Activities Targeted Market Activities for May 2010 Execute 2-hour LFC test Increase DAM/RUC execution to be 5 days / week Integrated Credit Management Dispute Submission testing ERCOT executes Annual CRR Auction ERCOT executes "Standard" Monthly CRR Auction http://nodal.ercot.com 54

55. June 2010 Market Activities Targeted Market Activities for June 2010 Execute 8-hour LFC test Execute Operational Scenarios (such as EECP) ERCOT executes "Standard" Monthly CRR Auction Outage Scheduler 1-day dual entry for TSP/QSE into both zonal/nodal http://nodal.ercot.com 55

56. July 2010 Market Activities Targeted Market Activities for July 2010 Execute Full Nodal Functionality Execute 48-hour LFC test ERCOT executes "Standard" Monthly CRR Auction Verifiable Costs used in execution http://nodal.ercot.com 56

57. August 2010 Market Activities Targeted Market Activities for August 2010 Execute systems for 48-hours with no Sev1/Sev2 defects ERCOT executes 168-hour Monthly CRR Auction http://nodal.ercot.com 57

58. http://nodal.ercot.com 58 Appendix

59. http://nodal.ercot.com 59 Examples of TSP/QSE reports to be included in Nodal Telemetry Outreach emails

60. 6/5/2016 Outreach Reports for TSP/QSE – Missing Analog/Status Values 60 Example report for a TSP: Example report for a QSE:

61. 6/5/2016 Outreach Report for TSPs – Critical Observability Measurements 61 Example of TSP report to request measurements to restore observability: CCC Load 1 WWWDDD Load 2 CCD AAA Load 3 Obs. Unobs. Existing Line flow or load measurements Obs. Observable buses Unobservable buses Unobs. Requested measurements to improve unobservable buses With existing measurements, the buses at the station WWW and DDD are not observable, which means their voltage magnitude and angle cannot be estimated. However, if the TSP can provide the load telemetry (MW/MVAR) at either station CCC or station DDD, the unobservable buses will become observable.

62. http://nodal.ercot.com 62 A breakout of SE and SCED telemetry as required by the ICCP Handbook

63. http://nodal.ercot.com 63 ICCP Data Received from QSEs – Data Requested for SE / SCED Table 20- ICCP Object Names for Generation Control and Regulation Data Received from QSEs

64. http://nodal.ercot.com 64 ICCP Data Received from QSEs – Data Requested for SE / SCED Table 20- ICCP Object Names for Generation Control and Regulation Data Received from QSEs (cont’d):

65. http://nodal.ercot.com 65 ICCP Data Received from QSEs – Data Requested for SE / SCED Table 20- ICCP Object Names for Generation Control and Regulation Data Received from QSEs (cont’d):

66. http://nodal.ercot.com 66 ICCP Data Received from TSPs – Data Requested for SE / SCED Table 31- ERCOT TSP ICCP Data Object Naming Conventions:

67. http://nodal.ercot.com 67 ICCP Data Received from TSPs – Data Requested for SE / SCED Table 32 - TSP Dynamic Ratings Naming Convention:

68. http://nodal.ercot.com 68 Telemetry Issue Resolution and ICCP Change Process

69. http://nodal.ercot.com 69 Current Telemetry Issue Process  For telemetry issues during FIT, contact a Shift Engineer at 512-248-6345.  For telemetry issues outside of FIT, contact EDS3@ercot.com.EDS3@ercot.com

70. LFC6/5/2016 High-Level View of the ICCP Change Process 70 The TML process for QSE ICCP Service Requests and an example of the ICCP Change Request Form are posted at: http://nodal.ercot.com/readiness/eds1/documents/index.html