Dynegy 1Q99

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2002 Spring Conference Speakers

• Sam Jones, COO, ERCOT
• ERCOTs Perspective on Lessons Learned in Market
  Design
• Thorvin Anderson, Manager of Market Operations
  for ERCOT, Calpine
• Market Design Issues From A Market Participants
  View
• David Sun, Manager Deregulation Applications,
  Alstom ESCA
• Market Design A Perspective From Other Markets

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Progress to Date

• 8 months with the lights still on!!
• Transition to a single control area
• 25 REPs pursuing commercial retail
• 13 REPs pursuing residential retail
• Thousands of customers switched to a new REP
• 175-200 PIPs and PRRs implemented
• 15-20 ERCOT system modifications to implement
  PIPs, PRRs and SCRs
• Lots of jobs saved and created

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Market Design Issues

• Overscheduling of load
• Long-term instability of the zones
• Illiquidity of the energy and AS market
• Lack of day ahead and real time markets
• Switching process and related settlement issues
• Balanced vs. Unbalanced Scheduling
• Intrazonal congestion management

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Market Design Issues

• Load responsiveness
• Generators acting as a load
• ERCOT Systems management process
• TCRs
• Reserve Requirements
• OOME Unit specific instructions