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Maury Galbraith Northwest Power and Conservation Council Portland, OR July 17, 2008

Sixth Northwest Conservation & Electric Power Plan O&M Planning Assumptions for Natural Gas Resources. Maury Galbraith Northwest Power and Conservation Council Portland, OR July 17, 2008. Sources of O&M Expense Information. FERC Form 1: Annual Report of Major Electric Utilities

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Maury Galbraith Northwest Power and Conservation Council Portland, OR July 17, 2008

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  1. Sixth Northwest Conservation & Electric Power PlanO&M Planning Assumptionsfor Natural Gas Resources Maury Galbraith Northwest Power and Conservation Council Portland, OR July 17, 2008

  2. Sources of O&M Expense Information • FERC Form 1: Annual Report of Major Electric Utilities • Utility Integrated Resource Plans • Literature Review • Industry Experts

  3. Comparison of O&M Expense Estimates Combined Cycle Combustion Turbine (2x1)

  4. Comparison of O&M Expense Estimates Simple Cycle Aeroderivative Turbine (LM6000)

  5. Comparison of O&M Expense Estimates Simple Cycle Frame Turbine

  6. Comparison of O&M Expense Estimates Internal Combustion Engine

  7. FERC Form 1 Data • Platts O&M White Paper • Piper, Steve and Jason LaDue, “Estimation of Generating Unit O&M Expenses: Revisiting the ’80/20’ Rule,” Platts White Paper, June 15, 2007. • Describes mapping of FERC Form 1 line items to fixed and variable O&M expense categories. • Provides indicative O&M expenses • Platts “Generation Supply Curve – Historic” Database • Contains FERC Form 1 O&M expense data for 2003-2006 • Requires Platts Energy AdvantageTM license

  8. Platts Mapping of FERC Form 1 Generating Plant Statistics to Fixed and Variable O&M

  9. Council Extract of FERC Form 1 O&M Data • O&M Source = FERC Form 1 Actual • AND Plant Region = WECC • Number of Observations:

  10. Limitation of FERC Form 1 Data • Regulated utility reporting (no merchant plants) • Accounting standards are subject utility interpretation (anomalously high and low cost data) • Reporting by Plant/Prime Mover combination (masks unit level detail)

  11. Combined Cycle Combustion Turbines

  12. CCCTs (Continued)

  13. Aeroderivative Gas Turbines

  14. Frame Gas Turbines

  15. Frame Gas Turbines (Continued)

  16. Internal Combustion Engines

  17. Summary of FERC Form 1 Analysis

  18. Comments and Suggestions?

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