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Status Update: Reliability & Market Power Mitigation Assessment Stakeholder Meeting

This is a status update for the Reliability & Market Power Mitigation Study, including data collection progress, key inputs, study process, and timeline.

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Status Update: Reliability & Market Power Mitigation Assessment Stakeholder Meeting

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  1. Status Update for Reliability/Market Power Mitigation Assessment Stakeholder Meeting April 16, 2008 Austin, TX

  2. Reliability & Market Power Mitigation Study Model : Status Update • Data collection effort in process • SPP has received most of the input from ETI with two conference calls to discuss the data • Last set of data was recently received by ETI (SPP is still reviewing it) • Study case will be ready by April end (Reliability Study) and by May end (MP Mitigation Study) for stakeholder review

  3. Reliability Study Model : Key Inputs • Generation Inputs • Two new generating plant to serve ETEC load (150 MW each) at Cypress and Jacinto • Cottonwood plant will be considered in Eastern Interconnect • Sensitivity to be run with Cottonwood connecting into ERCOT • Transmission Inputs • ETI’s 2008-2010 construction plan • STEP plan (2008-2017) approved by SPP BOD • Transactions (Interchange) • Latest transactions (interchange) for 2012 based on ETI and SPP’s OASIS • Only Long-term Firm transactions will be considered

  4. Reliability Study Process : Key Inputs • SPP-ETI Transfer Scenario • Units in SPP footprint are ramped up based on reserve capacity • Units in ETI will be backed down based on heat rate characteristics • RMR units in ETI will be backed down when other units reach their minimum limit • Units not owned/operated by ETI will not backed down • Contingencies Examined • Breaker to Breaker in ETI • 100 kV and higher outside ETI • 100 kV and higher in SPP • Monitored Transmission Facilities • 100 kV and above in SPP, ETI and Rest of Entergy • Interfaces, identified flowgates

  5. Market Power Mitigation Study : Key Inputs • The latest version of PROMOD IV with 6 digit bus numbers will be used • Generation Details • ETI : Publicly available data based on typical characteristics • SPP: Actual Data as provided by SPP members • RMR details will be modeled using Proxy approach (key interfaces, flowgates) • Typical Load shape will be used for ETI for hourly load forecast in study year (2012) • Fuel price data and other inputs will be coordinated with ERCOT for consistency

  6. Time Line • Final input data will be ready by April end • Study Models Finalized • Reliability Assessment Study Model : April 2008 • MP Mitigation Assessment Study Model : May 2008 • Preliminary Results Expected • Reliability Assessment : July 2008 • MP Mitigation Assessment : September 2008

  7. Questions?

  8. Mak NagleManager, Technical Studies and Modeling501-614-3564mnagle@spp.org

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