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Stan Holland Staff Engineer

Stan Holland Staff Engineer. Cost of Cycling Run Results Data Work Group January 3, 2012. Outline. Input changes Generation Results Production Cost Path Flows Recommendation. Change in NonFuel Start Cost. Change in Variable O&M Cost. Summary of Changes. Units Not Updated.

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Stan Holland Staff Engineer

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  1. Stan HollandStaff Engineer Cost of Cycling Run Results Data Work Group January 3, 2012

  2. Outline • Input changes • Generation Results • Production Cost • Path Flows • Recommendation

  3. Change in NonFuel Start Cost

  4. Change in Variable O&M Cost

  5. Summary of Changes

  6. Units Not Updated • Start & VOM costs were not updated for the following generator categories: • Coal Cogen { 4 units } • CT Future { 94 units } • CT Old Oil { 13 units } • IC { 79 units } • Other Steam { 10 units } • PC Steam { 7 units } • DWG could either assign these to one of the seven APTECH groups or recommend cost updates

  7. Results • Comparison of Annual Generation by Type and area • Comparison of Number of Starts – annual by type • Comparison of Production Cost – annual by type • Other Generation comparisons • Path Flow plots for COI+PDCI and WOR

  8. Generation Change by Area Even with the shift from coal-fired to combined cycle generation, the total production cost decreased by $397 million. Cholla, Four Corners, San Juan, and Springerville had some of the higher capacity factor variances (-3% to -4%).

  9. Generation Change - WECC

  10. Result Comparison – Number of Starts The large increase in the number of CT starts is likely related to the decreased start costs, especially for the small CT’s.

  11. Result Comparison – Average Production Cost (Annual Production Cost / Annual Energy >> $/MWh) Variable Production Cost Components • Start Costs (Fuel and Non-Fuel) • Variable O&M cost • Operating Fuel Cost • Optional – emissions adder

  12. Path Flow – COI + PDCI

  13. Path Flows – West of CO River

  14. Other Generation Parameters Current settings for Minimum Downtime allow warm starts for Coal – Supercritical, Combined Cycle, and Gas – Steam.

  15. Observations • A few thermal units in Alberta need to be tweaked (i.e. cogens need more restrictions) • Need further analysis of coal generation – not seeing reduction in ramping. Do we need to increase the minimum generation capacity?

  16. DWG Recommendations • Changes to 2022 Common Case • APTECH Start Costs (yes or no) • APTECH Variable O&M costs (yes or no) • Other Recommendations • 1. • 2. • 3. • 4.

  17. Questions?

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