1. November 6, 2007 TPTF User Interface Status Gary Macomber Kate Horne

2. TPTFNovember 6, 2007 UI Project Team MIS Group Adam Martinez UI Project Mgr. TBD Technical Lead Gary Macomber Usability Testing/Design Martha Siebold Usability Testing/Design Marianne Poythress Design/ Development Mike Legatt Design/ Development Chelsea Valentine Development TBD Design Lead Kate Horne Development TBD

3. TPTFNovember 6, 2007 UI Status ProjectMP InvolvementPrototypesDevelopmentEDSDateProduction MISUI Subgroup, TPTF Creating new iterations based on MP feedback. Build 2 changes due Nov. 15 to development In development, working on Build 2. EDS 3Jan 08TBD MMSUI Subgroup, TPTF 50% complete 50% to complete 11/9 50% in progressEDS 3Jan 08TBD CRRLimited due to NDAs Complete EDS 3.7Feb 08TBD NMMS PTCTSPs (NMMS project team) CompleteIn developmentEDS 2.4Nov 07Mar 08 Outage Scheduler TSPs, QSEs (OS project team) Market UI – 80% complete, ERCOT interface needs to align with market UI TBDEDS 4.9TBD MPIMUI SubgroupCompleteIn developmentIn support of EDS 3 Dec 07TBD Control Room/ Market Ops/ System Ops ERCOT control room operators Conceptual prototype complete POC for map 80% complete TBD COMS Invoices and Statements COPSCompleteIn developmentEDS 4.8Mar 08Post Go-Live

4. TPTFNovember 6, 2007 UI Subgroup Meetings Aug 15 Reviewed UI design process Reviewed status of all UI projects Reviewed MMS wireframes Plan for future sessions Sep 17 Reviewed status of all UI projects Discussed how MMS and MIS work together Presented more MMS wireframes Discussed requirements for MMS dashboard Offline workDefined requirements for dashboard, queries, and summary/detail screens for MMS Oct 11 Reviewed status of all UI projects Presented MPIM prototypes Reviewed dashboard and query screens Finalized COP, TPO and Output Schedule prototypes to move to development Nov 7 Review status of all UI projects Finalize bid, offer and schedule prototypes Discuss MP roles proposal Dec 5 Review MMS UIs (working version)

5. TPTFNovember 6, 2007 UI Subgroup Participation QSEs w/ Resources AEP APX Brazos Exelon Luminant NRG Reliant Suez Tenaska QSEs w/o Resources Rainbow Energy TSPs Centerpoint Coops/Munis Austin Energy Brazos LCRA STEC Consultants/ Vendors Gestalt? OATI PCI Potomac Economics Power and Gas Consulting Shell? Structure Group Sungard 114 individual subscribers to exploder list 23 companies participating in meetings:

6. MMS Screens

7. MIS Real-Time Landing Page

8. Trades Landing Page linked to from MIS

9. Trades Landing Page “torn away”

10. Comparing details of two unconfirmed trades

11. Bids and Offers Landing Page

12. DAM Energy-Only Offer Curve Previously Submitted

13. Detail showing Copy Across Tool

14. Questions?