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ICT 2009 Reliability Assessment and Construction Plan Evaluation

ICT 2009 Reliability Assessment and Construction Plan Evaluation. Entergy Transmission Summit August 11, 2009 Astor Crown Plaza New Orleans, Louisiana. Overview. Background Scope Draft Construction Plan Results. Background.

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ICT 2009 Reliability Assessment and Construction Plan Evaluation

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  1. ICT 2009 Reliability Assessment and Construction Plan Evaluation Entergy Transmission SummitAugust 11, 2009Astor Crown PlazaNew Orleans, Louisiana

  2. Overview • Background • Scope • Draft Construction Plan • Results

  3. Background • Reliability Assessment is performed pursuant to Entergy’s Open Access Transmission Tariff (OATT) Attachment K. • Objectives: • Assess of the ability of the Entergy transmission system to perform according to the Planning Criteria. • Evaluate the Construction Plan’s ability to mitigate any performance deficiencies found. • Provide basis for development of the Base Plan.

  4. Background • Draft report was made available for stakeholder review and comment • Posted on Entergy’s OASIS July 17, 2009 • Presentation made at LTTIWG July 22, 2009 • Final report is posted on Entergy’s OASIS. • Detailed information not included in report is posted • Background models, data, and other information is posted

  5. Entergy Planning Criteria • Planning Criteria • NERC Planning Standards • SERC Supplements • Entergy’s Local Planning Criteria • Entergy’s Business Practices (Planning Guidelines) • Posted on Entergy’s OASIS • NERC Planning Standards being revised

  6. Reliability Assessment Scope • Models • Near-Term Period: Summer & Winter 2010 & 2014 • Longer-Term Period: Summer 2018 • Construction Plan Projects • Initial Scan: Approved Projects from 2009-11 Construction Plan • CP Eval: Approved and Proposed Projects <2010-12 Construction Plan • System Intact Review – Category A • Contingency Scan – Category B • Sensitivities • Specific Load Pocket Criteria • Low Hydro Sensitivity

  7. Entergy’s Draft Construction Plan 2010-2012 • May 13, 2009: Original Draft Posted • July 16, 2009: Revision 1 Posted • August 3, 2009: Revision 2 Posted • 25 New Projects • 10 Accelerated Projects • 4 Delayed Projects • 20 Projects reported in the 2008 Differences Report • 12 were directly included in the draft CP project • 7 were replaced in the draft CP by an alternative project • 1 was partly included; the full project is expected in a later CP

  8. Near-Term: 2010 Problems and Solutions

  9. Near-Term: 2014 Problems and Solutions

  10. Near-Term: 2014 Problem Areas Under Study

  11. Map Legend Contingency Scan Results with Entergy’s Draft Construction Plan Projects Included Key to Map Highlights Annotations Overloads and Low Voltages Planned Upgrade from Entergy’s Draft Construction Plan Year Color Key Other Notes Solution being investigated

  12. Grandview-Osage Creek 161 kV Line Melbourne-Sage Line Upgrade Harrison East Upgrade

  13. Holland Bottoms-Hamlet New 161 kV Line Holland Bottoms New Station Lynch-McAlmont 161 kV Overload

  14. Benton North-Benton South 115 kV Line Hot Springs-Bismarck-Alpine-Amity Upgrade

  15. Horn Lake 230/161/115 Freeport 500/230 Greenbrook 115 Twinkletown 230 Plum Point 115 165 MW Nesbit 115 Church Rd 230 Getwell 230/115 Hernando 115 Batesville 230/115

  16. Grenada/Winona/Greenwood

  17. R. Braswell-Byram 115 kV Line

  18. Bogue Chitto

  19. Kenner-Snakefarm SE Louisiana Coastal Improvement

  20. Willow Glen-Conway 230 kV

  21. Acadiana Improvement Project

  22. Mossville-L253A Tap

  23. Sabine-Port NechesPort Neches-Linde Kolbs-Lakeview

  24. College Station 138 kV Switch Sta

  25. Low Hydro • Simulate reduced availability of hydro units during summer peak • Conway (Arkansas) Area • Harrison-Eureka 161 kV • Norfork-Sage 161 kV

  26. Load Pocket Criteria • Application of Specific Load Pocket Criteria • Western • Amite South • Downstream of Gypsy (DSG) • G-1, N-1 • No new problems identified.

  27. Longer-Term Period: 2018

  28. Longer-Term Period: 2018

  29. Gypsy-Claytonia

  30. Tigre-L247 Tap

  31. Base Plan Development Next Steps • Today-August 31: Stakeholder Input/Comments on Projects for Base Plan and Construction Plan • Stakeholder comments will be posted on Public OASIS (per Attach. K) • September LTTIWG: Present/Discuss Comments • October/November LTTIWG: ICT presents draft Base Plan for comment • Year End: Final ICT Base Plan Posted; Final Entergy Construction Plan Posted

  32. Steve PurdyLead Engineer, ICT Planning501-614-3371spurdy@spp.org Questions?

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