1. September 22, 2008 TPTF Nodal Status Report: Project Status Updates Nodal Project Managers

2. 2 2 Nodal Status Report - Project UpdatesSeptember 22, 2008 Agenda NMMS EMS MMS CRR COMS EIP (Integration) INT (Testing)

3. 3 3 Nodal Status Report - Project UpdatesSeptember 22, 2008 NMMS Project Update

4. 4 4 Nodal Status Report - Project UpdatesSeptember 22, 2008 NMMS Update Testing on NMMS 4 FAT is on hold –8 Outstanding Sev 1/Sev 2 defects –Fixes from Siemens ready, but patch would delay Oct. release would slip –ERCOT and Siemens agreed to put testing on-hold and then validate fixes during NMMS 5 pre-FAT Began Pre-FAT at Siemens for NMMS 5 –Scheduled Sept. 15 through Sept. 26 –Testing NMMS 5 functionality –Testing outstanding Sev 1/Sev 2 defects Identifying v1.21 schema changes and conducting cross-vendor discussion to ensure agreement on implementation Continuing validation rules implementation

5. 5 5 Nodal Status Report - Project UpdatesSeptember 22, 2008 EMS Project Update

6. 6 6 Nodal Status Report - Project UpdatesSeptember 22, 2008 EMS Update EMS CIM Importer –Restarted EMS CIM Importer Pre-FAT at ERCOT on Sept. 15 and testing is in progress. Plan to complete the formal tests by Sept. 26 or earlier –Known data issues are resolved EMS Software Upcoming Releases –EMS 5.1.5 for Outage Evaluation (OE), Voltage Support, etc. has finished execution of planned FAT test scripts. Release is held up by several OE-specific defects – new target Sept. 26 FAT for sign-off –EMS 5.1.7 Habitat 5.1.7 released to ERCOT several months ago, awaiting an opportunity to place in ERCOT FAT –EMS 5.1.8 EMS CIM Importer – Pre-FAT is in progress

7. 7 7 Nodal Status Report - Project UpdatesSeptember 22, 2008 MMS Project Update

8. 8 8 Nodal Status Report - Project UpdatesSeptember 22, 2008 MMS Update MMS Processes & Procedures (DAM, RUC, Adjustment Period and Real-time) –MMS and MOS team members are leading the development of these documents –Process reviews with the for DAM & RUC are complete –Process reviews for adjustment period and real-time will be presented during September and October TPTF meetings Software Releases –MMS 4 Complete patch 2 FAT testing on Aug. 26 Started patch 3 FAT testing on Aug. 26 Patch 4 delivered to ERCOT on Aug. 27 (originally targeted for Aug. 31) –Will use same CIM XML test data set as patch 2 and 3 –Focused mainly on outstanding defects; smoke testing in progress; will be moved to MMS FAT after the completion of MMS3 patch 3 FAT MMS4 patch 5 is targeted for delivery on Sept. 30 –Targeted to include Settlements and Billing defects, interface updates, and additional work- flow development and testing with the most recent CIM schema and CIM XML test data set –Will use v1.20 of the CIM schema and a corresponding CIM XML test data set

9. 9 9 Nodal Status Report - Project UpdatesSeptember 22, 2008 MMS Update – 2 Software Releases (continued) –MMS 5 No change to previous MMS5 update; remains the last scheduled MMS software release This release will be comprised of the following: –CIM XML import processing and testing end-to-end (defined in last bullet in this section) –Bug fixes identified to ABB during testing –Remaining work on NPRRs (e.g., NPRR113) –Remaining SIG paper work (e.g., rounding) –Remaining software implementation changes based on testing (e.g., performance improvements, startup cost eligibility, SASM constraint modeling) Trigger start for MMS5 is a CIM schema and CIM XML data file validated and synchronized for consumption by downstream systems (e.g., EMS, MMS)

10. 10 Nodal Status Report - Project UpdatesSeptember 22, 2008 CRR Project Update

11. 11 Nodal Status Report - Project UpdatesSeptember 22, 2008 CRR Update Submitted Change Request for the CRR Network Model One Line Diagram to EMS for completion of cost and schedule information. Once completed, next step is submission to the Change Control Board Start of CRR Enhancement Release 1.06 is planned for Sept. 19 – SMEs will test revised propagation of CRR Account Holder name changes within the CRR application Obtained approval from the Change Control Board to add CRR to the MOTE environment

12. 12 Nodal Status Report - Project UpdatesSeptember 22, 2008 COMS Project Update

13. 13 Nodal Status Report - Project UpdatesSeptember 22, 2008 COMS Update Settlements/Data Agg/CSI – Product Testing at ERCOT –Development Settlements and Billing/Data Agg: Completed over 97% of nodal coding and functionally verified. Outstanding code (to date): –Data Agg: Reworking recent memory footprint release from Oracle into core code and regression testing –Internal/External Source Reports for Data Agg, Settlements, and CODIA CSI: Completed over 94% of Lodestar Bill Determinants and verified –Testing Continue to test core system with upstream system changes Continue to optimize batch cycles –Major issues Currently reworking the memory footprint functions into base code (added a final regression to schedule) Need synchronous dataset from market systems (NMMS/EMS/MMS/CRR) running in an integrated environment before market level validation can begin (required for post Shadow Settlement Extracts)

14. 14 Nodal Status Report - Project UpdatesSeptember 22, 2008 COMS Update – 2 Registration and Disputes – Migrating to Integration Test –Registration 4 Release integration test scheduled for completion Dec. 5 –Registration 4 Release includes: Siebel changes for nodal (defect fixes) Siebel to Lodestar interface (upgrade/change from zonal) Lodestar to Siebel Dispute Date Look-Up –Major Issue Integration rework completed Zonal/Nodal cross impact created delay for Disputes API. Disputes API now targeted for January 2009 production delivery Credit Monitoring and Management – FAT Testing –Build 3.1 (Vendor developed interfaces) in FAT 100% Complete –Build 3.2 (Settlement and Billing / Commercial System Integrated Releases) in development targeting October 2008 delivery to FAT –Major Issues/Risks Finalizing detailed analysis and design of internal UI and reporting. Any changes from upstream systems, NPRRs or change controls have potential to impact schedule

15. 15 Nodal Status Report - Project UpdatesSeptember 22, 2008 Integration (EIP) Project Update

16. 16 Nodal Status Report - Project UpdatesSeptember 22, 2008 EIP Update External interfaces (web services) –Web Services for External Interface Specification v1.16 deployed to the Sandbox –Developer Workshop on Sept. 3 was a success with over 60 attendees –Plan to bring v1.16 to TPTF for final review and approval; it has already been reviewed by the API Subgroup Internal Interfaces –A significant release completed week of Sept. 15, with the following deployments to Integrated Release 2 and Zonal iTest Platts – MMS CRR – MMS CMM – MMS REG – MMS Adapters for Web services (v1.15) REG – S&B CRR – CMM CMM – CRR

17. 17 Nodal Status Report - Project UpdatesSeptember 22, 2008 EIP Update – 2 ERCOT is merging the Application Program Interface (API) Subgroup meetings into the Friday morning EDS 3 Market Call meetings –The last API Subgroup meeting will be held on Sept. 23; thereafter, the topic will be covered on the EDS call –All questions or feedback to ERCOT regarding documentation should be sent to the EDS 3 email at eds3@ercot.comeds3@ercot.com –Google Group that facilitates API forum will continue as a peer-to-peer forum for Market Participants to collaboratively share and obtain information; however ERCOT will now only use EDS activities and the Readiness Center for all communications and postings –ERCOT is seeking a Market Participant volunteer to assume moderation of the Google Group

18. 18 Nodal Status Report - Project UpdatesSeptember 22, 2008 Design metric – 97% Nodal has 10 major end-point systems, 36 Interfaces, 57 major integration components and around 400 Information Flows

19. 19 Nodal Status Report - Project UpdatesSeptember 22, 2008 Construction metric – 85%

20. 20 Nodal Status Report - Project UpdatesSeptember 22, 2008 Deployed to Testing metric – 55%

21. 21 Nodal Status Report - Project UpdatesSeptember 22, 2008 Integration Testing (INT) Project Update

22. 22 Nodal Status Report - Project UpdatesSeptember 22, 2008 INT Update Major milestones achieved in the past 2 weeks: –Established a process that works: Developed business-centric integration objectives for each release, including the accomplishment of end-to-end integrated business processes Prioritized all Nodal interfaces in each release, based on objectives above Directed EIP and core project teams based on interface priorities Deployed complete interface components (source, sink, adaptor) for integration testing –To date: INT leads assigned to five Priority 1 interfaces All five Priority 1 interfaces deployed for Integration Testing (EWS-MMS, Platts-MMS, Reg- MMS, CRR-MMS, CMM-MMS) 1 passed smoke test; rest under-going smoke MMS is running daily with stubbed data (FAT dataset) –Target at the end of release 2 (Oct. 10) All Priority 1 interfaces deployed and passed smoke test (base-lined and under-going connectivity testing) MMS running daily with data inputs through Integration layer for EWS, Platts, CRR, and CMM

23. 23 Nodal Status Report - Project UpdatesSeptember 22, 2008 Questions?