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Model Data Collection Meeting Announcement

Entergy Transmission Planning Summit

New Orleans, LA

July 8, 2004

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Goals of Model Data Collection Meeting

• Ensure greater accuracy in long-term transmission system models

• Ensure consistency in load forecasting & data submittal– Entergy has proposed a standard format for load-serving

entities to submit load and resource forecasts

• Provide a forum for transmission customers to provide updated information on their facilities (e.g., generator characteristics, plant load data)

• Provide a forum for Entergy to share with stakeholders its approach and philosophy in transmission system planning and modeling

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The meeting will cover:

• Proposed template for submitting load and resource forecasts• Entergy’s modeling and transmission system planning philosophy• Stakeholders’ concerns and issues regarding system modeling

The meeting will NOT cover:

• Coordination of load and resource modeling with and for external systems– This process is addressed in Entergy’s participation in the VAST and

VST study groups.

• Specific study results or models

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Tentative Timeline of Model Update Process

October Entergy hosts stakeholders meeting to obtain customer input and suggested changes to long-term power flow models

Oct. – Dec. Entergy updates models and posts on OASIS

Dec. – Feb. Stakeholders provide additional input, suggested

revisions, or corrections

Mar. – May Entergy incorporates latest changes into models and coordinates model update with other SERC members via

the Regional study groups

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When: October 26, 20049AM to Noon

Where: New Orleans (exact location TBD)

Participants: Load-Serving Entities within the Entergy Control

Area

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Load & Resource Workbook• Contact Information• Demand – System• Demand by Bus (Summer)• Demand by Bus (Winter)• Weather Normalization• Capacity (Summer & Winter)• Firm Resource• Firm Transactions• Non-Firm Resources• Additional Information

Draft Workbook Template Available on OASIS for Review & Comments

http://oasis.e-terrasolutions.com/OASIS/EES/trans_planning_summit_summary.htm

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Contact Information

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Demand – System Summary

• Internal Demand•Standby Demand•Total Internal Demand•Direct Control Load Management

• Interruptible Demand•Net Internal Demand

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Demand by Bus (Summer & Winter)

•PSS/E Bus #•Point of Delivery (Entergy Station Name)•Point of Delivery (Customer Station Name)•MW•MVAr•Power Factor

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Weather Normalization

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Capacity (Summer & Winter)

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Firm and Non-Firm Resources

•Generator Name•PSS/E Bus #•PSSE Bus Name•PSSE Machine ID•Jurisdiction

•Summer & Winter• Pmax• Pmin• Qmax• Qmin• MW Output Owned

•Preferred Dispatch Order

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Firm Transactions

•OASIS #•Customer Making Request•Point of Receipt•Point of Delivery•Source•Sink•MW Requested•MW Granted

•Service•Begin•End•Status•Seller Comments•Renewal Deadline•Renewal Comments