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Southeastern Inter-Regional Planning Update (SIRPP)Entergy Transmission Summit

August 11, 2009Astor Crown PlazaNew Orleans, Louisiana

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SIRPP: Southeast Inter-Regional Participation Process

• www.southeastirpp.com

Presentation Overview

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SIRPP consist of the following members:

• Southeastern Region (SERTP)

• Power South

• Dalton Utilities

• Georgia Transmission Corporation (GTC)

• Municipal Electric Authority of Georgia (MEAG)

• South Mississippi Electric Power Association (SMEPA)

• Southern Companies

• Duke Energy Carolinas

• Entergy Companies

• E. ON U.S.

• Progress Energy Carolinas

• Santee Cooper

• South Carolina Electric & Gas (SCES)

• Tennessee Valley Authority (TVA)

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SIRPP Activity

• November 13, 2008 – Stakeholders Conference Call to discuss study scope

• March 16, 2009- Stakeholders Conference Call to finalize scope of revised study

• August 19, 2009- Review/Present Report of Step 1 Study Results to Stakeholders

• Q4 2009- Final Posting of Step 1

• Q1 2010- Process for Step 1 and 2 begins

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STEP 1 Study Assumptions

• Methodology

• Run Study Case (A) without transfer, and (B) with transfer. Each Transmission Owner applies TPL criteria to identify upgrades in Case B vs. upgrades in Case A.

• Upgrades associated with Transfer

• Compare Case B vs. Case A to identify any upgrades at 115 kV and above

• Comments :

• Upgrades are identified by each Transmission Owner that experiences a flow impact using its TPL criteria. Upgrades would be identified independent of any ultimate contract path selected

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Stakeholders Comments to Transmission Owners on the Five Economic Scenarios

• Stakeholders would like each scenario to be looked at in a way that identifies the upgrades needed on the collective SIRPP systems to accommodate the requested economic transfer.

• The stakeholders are looking for a flow-based analysis as opposed to a contract path based analysis.

• For example, on the requested 3000 MW PJM Classic to SOCO transfer, simulate a 3000 MW generation increase in PJM Classic and 3000 MW generation decrease in SOCO and determine:

• How the 3000 MW of flow distributes across the system (i.e., how much flows through TVA, though Duke, through Entergy, through systems outside the SIRPP, etc.)

• What are the limitations / associated upgrades identified on the SIRPP systems

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SIRPP Step 1 Economic Studies for 2008/2009

2000 MWEntergyGA Integrated

Transmission System (GAITS)

PJM (classic) Southern Company

PJM (west) Southern Company

Southern Company PJM (classic)

SPP

3000 MW

2000 MW

3000 MW

5000 MW SIRPP

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www.southeastirpp.com

For additional information or to sign up to be part of SIRPP:

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Southeast Regional Transmission Planning Process (SERTP)

• December 16, 2008 – Final 2008 study results were presented at Southeast Transmission Summit – available on SERTP website: http://www.southeasternrtp.com/

• March 25, 2009 – 2009 transfer studies selected

• Savannah > GA 60%, AL 20%, MS 20% - 1000 MW

• Gulfport > Georgia - 1000 MW

• Ties to SCEG > Georgia - 1000 MW

• Murray 500 > Florida Border - 650 MW

• Washington County > Georgia - 5000 MW

• June 24, 2009 – Presentation of Southeast Expansion Plan

• 2009Q4 – Final 2009 study results will be presented at the Southeastern Transmission Summit – date/location TBD

Questions / Comments

Eddie FilatSenior Engineer, ICT Planning

501-688-1708efilat@SPP.org