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Arizona Corporation Commission

Arizona Corporation Commission . Power Plant & Transmission Siting Summary ACC Staff Presentation October 30, 2001 9. A.R.S. §40-360-07.B ACC Balance Test. Adequacy Economics Reliability. Environment Ecology. Public Interest. House Bill 2040. Effective 8/9/01:

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Arizona Corporation Commission

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  1. Arizona Corporation Commission Power Plant & Transmission Siting Summary ACC Staff Presentation October 30, 20019

  2. A.R.S. §40-360-07.BACC Balance Test Adequacy Economics Reliability Environment Ecology Public Interest ACC Siting Summary

  3. House Bill 2040 Effective 8/9/01: • Power Plants shall file a plan with the Commission 90 days prior to filing an application for a CEC • Filed Power Plant plan is confidential • All Plans filed with the Commission must now be accompanied by a power flow and stability analysis report showing the effect on the current Arizona transmission system ACC Siting Summary

  4. GenerationAdequacy Determination • Existing Loads with Reserve Margins • Projected Loads with Reserve Margins • Replace Older, Less Efficient Plants • Competitive Margin • Ancillary Services ACC Siting Summary

  5. Proposed Plants in Arizona ACC Siting Summary

  6. Water / Gas UsageAll Filed Power Plants ACC Siting Summary

  7. Approved Plants Pending Plants Future Plants New AZ Power Plants, Gas Supply BasinsAnd Pipelines

  8. Source: Presentation to East of California parties by El Paso Natural Gas Company on April 26, 2001 ACC Siting Summary

  9. Staff Proposed Measures of Adequacy & Security • There should be sufficient transmission import capacity to reliably serve all loads in a utility’s service area without limiting access to more economical or less polluting remote generation • New power plants must have sufficient interconnected transmission capacity to reliably deliver its full outputwithout use of remedial action schemes or displacing apriori generation at the same interconnection for single contingency (N-1) outages ACC Siting Summary

  10. San Juan Glen Navajo Canyon Four Corners Mead McKinley Mohave Cholla Westwing Coronado Palo Verde Pinnacle Springerville Phoenix Peak Silver Kyrene King Liberty North Gila Saguaro Yuma Greenlee Tortolita Tucson Transmission Import South Vail Constrained Areas Arizona EHV Transmission ACC Siting Summary

  11. Comparison of Proposed Generation &Transmission ACC Siting Summary

  12. When is Enough ENOUGH? • Water Resources Over Utilized • Gas Supply or Delivery Capability Exceeded • Transmission System Deliverability Exceeded • Market Saturated ACC Siting Summary

  13. Questions ? ACC Siting Summary

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