1. GRID OPERATIONS ORGANIZATION John Adams Director, Grid Operations jadams@ercot.com@ercot.com 512-248-3130(office) 512-694-3364(cell)

2. 2 9/4/2008 Organizational Structure SYSTEM PLANNING & OPERATIONS Kent Saathoff VP System Planning & Operations John Adams Dir. Operations Support Dan Woodfin Director System Planning Colleen Frosch Mgr. System Operations Trip Doggett Sr.VP &COO COMPLIANCE Dale Goodman Dir, Client Services Betty Day Director, Markets MARKET/OPS SUPPORT Joel Mickey Dir, Market Operations Support MARKETS TBD Chief Compliance Officer CLIENT SERVICES,Sr. Steve Myers Mgr., Operating Standards

3. 3 9/4/2008 Organizational Structure John Adams Director Grid Operations Bill Blevins Manager Operations Engineering John Dumas Manager Operations Planning Cagle Lowe Manager SO Division Project Org. Curtis Crews Manager Network Modeling

4. 4 9/4/2008 Grid Operations – Departments & Core Functions Project Management & Training (Cagle Lowe) Operations Support & Nodal Transition (Bill Blevins) Operations Planning (John Dumas) Network Modeling (Curtis Crews) System Operations & Market projects delivery Develop and maintain the system operator training program Develop and deliver Operator Training Simulator (OTS) Scenarios Develop and deliver Operator Instructor-led training Manage Operator Continuing Education Hours (CEH) Develop and implement annual Blackstart Seminars (ERCOT-wide) Develop and Facilitate ERCOT-wide Storm Drills Develop and maintain System Operations operating procedures Represent ERCOT on NERC subcommittees and standard drafting teams Approve or reject planned outages to maintain reliability Develop operational limits for grid operations Report Operations performance including NERC DOE TRE ROS Perform engineering studies and provide expert advise to support real-time operations Develop remedial action plans as needed to support efficient/reliable operations. Propose and implement improvements to real-time operations tools Coordination of Nodal Transition State Estimator Real Time contingency analysis Voltage Stability Analysis Tool Operational transient stability analysis Black Start procurement Operations planning tools including MAI Replacement analysis Unit testing and Ancillary Service Qualification Ancillary Service Requirements Load Forecasting Wind Forecasting Development of operations planning strategy Communication with market participants regarding operation planning issues including representing ERCOT on the Reliability and Operations Subcommittee Modeling of Electric Power system for Zonal Energy Management System Development of processes and procedures for nodal market modeling supporting: EMS MMS CRR Outage Scheduling & Evaluation System Planning Supervision of Modeling personnel Development of quality assurance processes for market and TSP data. Communication with market participants regarding modeling issues; including representation on the Network Modeling Task force

5. 5 9/4/2008 Grid Operations – Strategic Focus Maintain Reliability –Integrate Wind energy successfully Nodal Implementation – wholesale market transformation Demonstrate compliance with NERC standards Perform tasks as cost effectively as possible

6. 6 9/4/2008 Questions