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Data and Assumptions for Final Assessment

Data and Assumptions for Final Assessment. Technical Committee Meeting September 28, 2012. Outline. August 30 th Draft Assessment Changes since the 8/30/12 Draft September 28 th Draft Assessment Proposed Changes for the 10/26/12 Final (based on comments received).

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Data and Assumptions for Final Assessment

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  1. Data and Assumptions forFinal Assessment Technical Committee Meeting September 28, 2012

  2. Outline • August 30th Draft Assessment • Changes since the 8/30/12 Draft • September 28th Draft Assessment • Proposed Changes for the 10/26/12 Final (based on comments received)

  3. August 30, 2012 Assessment

  4. Changes since the 8/30/12 Draft • Code fix (related to Canadian operation, eliminated anomalous June curtailments) • 80-year hydro record • LLH Summer purchase-ahead 1,000 MW to 3,000 MW • Misc resource updates (next slide)

  5. Misc Resource Updates • Wind 4421 to 4579 MW (+158) • IPP 3,586 MW to 3,451 MW (-135) • Centralia 1 670 MW IPP changed to 290 MW IPP and 380 MW firm • Tenaska 245 MW firm changed to 245 MW IPP • Firm 12, 746 MW to 12,881 MW (+135)

  6. September 28, 2012 Assessment

  7. Proposed Changes for Final - Wind • Wind 4,579 MW to 4,266 MW (-313) • Add Fairfield (+3.3) • Remove Glacier I & II (-210) • Add Gordon Butte (+3.3) • Adjust Judith Gap (-90.4) • Add Musselshell I & II (+6.6) • Adjust Spion Kop (-26.8) • Adjust Two Dot (-2.2) • Add Two Dot II (+3.3)

  8. Proposed Changes for Final - Thermal • Montana assumptionUse 1/3 of its load and resources • Mill Creek/Dave Gates:7 out of 150 MW is contractedUse 1/3 of 143 (50 to 47 MW for NW) • Highwood Generating Station:Off line, remove it (-13 MW for NW)

  9. Proposed Changes for Final - Hydro • Use 80-year hydro record • Account for all hydro independents • Ensure that hydro independent file totals are current

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