Transmission Studies for New Long Term Network Resources Doug Powell Manager Technical System Planning Entergy Services, Inc. September 11, 2006

Two options for designating new Long-Term Network Resources 1. Incremental: Customer requests designation of new generation in addition to existing Network Resources. 2. Delisting/displacement: Customer requests designation of new generation replacing existing Network Resources.

Incremental Study New resource will be studied in addition to customer’s existing Network Resources. All network service studies will be performed on an incremental basis, unless service request specifies otherwise.

Delisting/Displacement Study Delisting study evaluates a new generation resource as a long-term replacement for an existing Network Resource. Displacement study evaluates a new generation resource as a short-term substitution for an existing Network Resource.

Delisting/Displacement Studies Performed at Customer’s election. Customer provides list of Network Resources to de-list/displace or Entergy Transmission can provide the delisting/displacement options for Customer.

Batching of Requests Customer can elect to have all or a portion of its requests to designate new Network Resources “batched.” Transmission will perform all studies in the specified “batch” and release the completed System Impact Studies (“SIS”) at one time. Only requests that are in consecutive order in the SIS queue can be “batched.”

Under the ICT The ICT will administer the Operating Companies’ OASIS The ICT will sign the SIS Agreement with customer and perform the System Impact Study To the extent a Facility Study is necessary and requested, Entergy transmission will conduct the study, subject to the validation of the ICT.

Questions ??

Timing of SIS Transmission customer applies for transmission service in OASIS. N/A Entergy will forward System Impact Study Agreement including estimated study cost and time required for completion. Within 30 Days Transmission customer returns executed Study Agreement to Entergy. Within 15 Days Entergy completes System Impact Study; Entergy approves or denies request for transmission service, or provides Facilities Study Agreement. Within 60 Days, if possible If request approved, Transmission Customer returns completed Service Agreement. Within 15 Days