1. Lead from the front Texas Nodal http://nodal.ercot.com 1 EDW Update to TPTF November 5, 2007 Janet Ply EIS Nodal EDW Project Manager

2. Lead from the front Texas Nodal http://nodal.ercot.com 2 EDW Plan of Action Goal: Publish revised EDW project schedule –Team has completed the ERCOT-wide Nodal Data Services Master List –Currently in the process of confirming the project’s scope, prioritizing the work, and developing a project plan and schedule, complete with assumptions and dependencies –We plan to have the revised project schedule available by December 3 rd –Schedule will be adjusted as upstream deliverables slip – this should be expected –Priorities are meeting the protocols first; requests outside protocols will be delivered in later phases ActivityDate Complete NDSML re-baseline11/2/07 Republish list to nodal.ercot.com11/5/07 Review source system/EDS schedules & identify/confirm EDW activities11/9/07 Apply priorities and estimate activities11/15/07 Determine staffing needs11/19/07 Develop new schedule11/29/07 Review schedule with Delivery Assurance; revise as necessary12/3/07 Baseline revised EDW schedule12/3/07

3. Lead from the front Texas Nodal http://nodal.ercot.com 3 EDW Plan of Action Goal: Complete requirements process and publish report/extract layouts to Market –ERCOT business has identified key internal resources to assist EDW team with completion of requirements Isabel Flores is serving as the overall EDW business user liaison Jackie Ashbaugh/Tom Kornegay leading business requirements for COMS John Adams is leading business requirements for Section 8 – Compliance Isabel is leading business requirements for all others –Leveraging the same template for gathering report/extract/replication requirements across all business units

4. Lead from the front Texas Nodal http://nodal.ercot.com 4 Requirements Gathering Requirements for the Business

5. Lead from the front Texas Nodal http://nodal.ercot.com 5 EDS2 Accomplishments Completed replication in Dev environment Completed V1 telemetry data mart (architected solution to join EMS and PI data for reporting) Completed dimensional data model for telemetry reporting Completed interface to maintain dimensional reporting for critical points and communication outage reporting Completed transition to hourly outage and hourly PI feed Completed implementation of the extract framework in development environment and tested process Implemented Cognos framework manager for use with telemetry data mart

6. Lead from the front Texas Nodal http://nodal.ercot.com 6 Assumptions Meeting protocol requirements is the top priority Deliverables will be high quality – minimize work-arounds Similar replication extracts and reporting requirements will be captured in one CSD document. Additional CSD documents will be created as needed Data retention and assumptions will be part of the EDW project level CSD, which will be presented to TPTF for approval during the November 26-27 th meeting

7. Lead from the front Texas Nodal http://nodal.ercot.com 7 Setting Expectations EDW is dependent upon: –Data sources being ready on time –Business requirements being delivered on time –Infrastructure The EDW schedule will continue to change as upstream dependencies change The EDW team will focus on prioritized EDW deliverables with maniacal focus –We will hold the appropriate upstream owners accountable for their deliverables to us –We will escalate as appropriate –We will work iteratively to get as much done as possible in a timely manner

8. Lead from the front Texas Nodal http://nodal.ercot.com 8 Questions?