1. Director, Transmission Services
Report on Electric System Constraints and Needs: Executive Summary October 18, 2005
Bill Bojorquez
Director, Transmission Services

2. Summary Annual status report filed with PUCT System Operations
Load (Peak Demand and Energy Forecast)
Generation (Existing and Planned)
Congestion Costs
Improvement Costs
Area Constraints and Improvements
Completed improvements
Planned improvements
Projected constraints

8. 345-kV Completed Improvements 1999-2005
Summary of Completed
Improvements
Over $2.2 billion
345 kV 1,600 circuit miles
138 kV 2,500 circuit miles
20,400 Transformer MVA
Numerous Reactive Additions

9. 345-kV Planned Improvements 2006-2012+
Summary of Planned
Improvements
Over $3.1 billion
345 kV 1,400 circuit miles
138 kV 2,000 circuit miles
21,700 Transformer MVA
Numerous Reactive Additions

10. Conclusions
ERCOT Region continues to lead planning and construction of system improvements
Capital and operational improvements provide significant reduction in congestion costs
Additional studies underway
Pre-Nodal Transmission Study
Senate Bill 20 Biennial Report on Transmission and Generation Needs (including support for determination of renewable energy zones)