TRANSMISSION / DISTRIBUTION PROJECTS COMPANY:EAI … · EXECUTIVE SUMMARY The purpose of this Facilities Study is to determine the transmission improvements needed to un-designate

EMO OASIS 1500581 Facilities Study

TRANSMISSION / DISTRIBUTION PROJECTS

COMPANY:EAI

CUSTOMER: ENTERGY SERVICES (EMO)

FACILITIES STUDY EJO # F4PPAR0438

ICTT-2007-185

TRANSMISSION SERVICE REQUEST

OASIS 1500581

Revision: 2

Rev Issue Date Description of Revision Revised

By Project

Manager

0 1/29/08 Draft Issued to ICT DB/GWR

1 2/04/08 ICT Determines Upgrade Classification JDL JH

2 2/11/08 Updated Costs JDL JH


1. EXECUTIVE SUMMARY .......................................................................6

2. SAFETY AWARENESS.........................................................................6

3. SCOPE SUMMARY ...............................................................................7

I. Cabot EHV: Construct 500/115 kV Substation ......................................................... 7 II. Add a 3rd Mabelvale 500/115kV Autotransformer or Upgrade both Mabelvale

500/115kV Autotransformers.................................................................................. 8 III. Install a 125MVAR Static VAR Compensator (SVC) at Lynch............................... 9 IV. Upgrade the Morrilton East-Gleason 161kV Transmission Line............................ 9 V. Upgrade the Gleason-Conway West 161kV Transmission Line............................ 9 VI. Upgrade the LR Rock Creek-LR South 115kV Transmission Line ........................ 9 VII. Upgrade the LR West-LR Boyle Park 115kV Transmission Line......................... 10 VIII. Upgrade the LR Pinnacle-LR Walton Heights 115kV Transmission Line............. 10 IX. Upgrade the Mabelvale-LR Mann Road 115kV Transmission Line ..................... 10 X. Upgrade the Mabelvale-LR Alexander 115kV Transmission Line ....................... 10

4. SCOPE DETAILS ................................................................................11

I. Required Transmission Line Upgrades .................................................................. 11 A. Morrilton East-Gleason 161kV (304 MVA Required) ........................................ 11

B. Gleason-Conway West 161kV (284 MVA Required) ........................................ 11

C. LR Rock Creek-LR South 115kV (344 MVA Required) .................................... 11

D. LR West-LR Boyle Park 115kV (261 MVA Required)....................................... 11

E. LR Pinnacle-LR Walton Heights 115kV (168 MVA Required) .......................... 11

F. Mabelvale-LR Mann Road 115kV (341 MVA Required) ................................... 11

G. Mabelvale-LR Alexander 115kV (337 MVA Required) ..................................... 11

II. Additional Substation Reviews ............................................................................ 11 A. Morrilton East (1092 Amps Required) .............................................................. 11

B. Gleason (1092 / 1020 Amps Required) ............................................................ 11

C. Conway West (1020 Amps Required) .............................................................. 11

D. LR Rock Creek (1729 Amps Required) ............................................................ 11

E. LR South (1729 Amps Required) ..................................................................... 11

F. LR West (1312 Amps Required)....................................................................... 11

G. LR Boyle Park (1312 Amps Required) ............................................................. 11

H. LR Pinnacle (844 Amps Required) ................................................................... 11

I. LR Walton Heights (844 Amps Required)......................................................... 11

J. Mabelvale (1714 / 1714 Amps Required) ......................................................... 11

K. LR Mann Road (1714 Amps Required) ............................................................ 11

L. LR Alexander (1714 Amps Required)............................................................... 11


III. Required Substation Upgrades ........................................................................... 11 A. Add a 3rd Mabelvale 500/115kV Autotransformer or Upgrade both Mabelvale

500/115kV Autotransformers............................................................................ 11

B. Install a 125MVAR Static VAR Compensator (SVC) at Lynch.......................... 12

IV. New Substation ................................................................................................... 12 A. Cabot EHV: Construct 500/115 kV substation.................................................. 12

V. Detailed Transmission Scopes ............................................................................ 12 A. Morrilton East-Gleason 161kV (13.03 Miles) (304 MVA).................................. 12

B. Gleason-Conway West 161kV (2.29 Miles) (284 MVA).................................... 13

C. LR Rock Creek-LR South 115kV (344 MVA).................................................... 13

D. LR West-LR Boyle Park 115kV (261 MVA) ...................................................... 13

E. LR Pinnacle-LR Walton Heights 115kV (168 MVA).......................................... 13

F. Mabelvale-LR Mann Road 115kV (341 MVA)................................................... 14

G. Mabelvale-LR Alexander 115kV (337 MVA) ..................................................... 14

VI. Detailed Substation Review – Verify Equipment Ratings .................................... 14 A. Morrilton East (1092 Amps).............................................................................. 14

B. Gleason (1092 Amps / 1020 Amps) ................................................................. 14

C. Conway West (1020 Amps).............................................................................. 14

D. LR Rock Creek (1729 Amps)............................................................................ 14

E. LR South (1729 Amps)..................................................................................... 15

F. LR West (1312 Amps) ...................................................................................... 15

G. LR Boyle Park (1312 Amps) ............................................................................. 15

H. LR Pinnacle (844 Amps) .................................................................................. 15

I. LR Walton Heights (844 Amps) ........................................................................ 15

J. Mabelvale (1714 Amps / 1714 Amps) .............................................................. 16

K. LR Mann Road (1714 Amps)............................................................................ 16

L. LR Alexander (1714 Amps) .............................................................................. 16

VII. Detailed Required Substation Upgrades .......................................................... 16 A. Add a 3rd Mabelvale 500/115kV Autotransformer or Upgrade both Mabelvale

500/115kV Autotransformers............................................................................ 16

B. Install a 125MVAR Static VAR Compensator (SVC) at Lynch.......................... 18

VIII. Detailed New Substation Scope ....................................................................... 19 A. Cabot 500/161 kV Substation........................................................................... 19

IX. Permit Requirements........................................................................................... 21

5. COSTS.................................................................................................22

Entergy Transmission Business Page 3 of 31



6. SCHEDULE..........................................................................................23

Project Definition .......................................................................................................... 23 Transmission Lines ...................................................................................................... 23 Substations .................................................................................................................. 23

7. CONFIRMED RESERVATIONS ..........................................................25

8. STUDY QUEUE ...................................................................................29

9. ATTACHMENTS ..................................................................................31

A. Location Drawings............................................................................................ 31

B. One Line Drawings........................................................................................... 31


Table of Acronyms

ACSR Aluminum Conductor Steel Reinforced ACSS Aluminum Conductor Steel Supported ADEQ Arkansas Department of Environmental Quality AECC Arkansas Electric Cooperative Corporation AFUDC Allowance for Funds Used During Construction ATC Available Transfer Capability EMO Entergy Services – Energy Management Organization EES Entergy Control Area EHV Extra-High Voltage ICT Independent Coordinator of Transmission kV Kilo-Volt MCM (M) Thousand Circular Mils MVA Mega-Volt Amp MW Mega-Watt NPDES National Pollution Discharge Elimination System NOI Notice of Intent OASIS Online Access and Same-time Information System OATT Open Access Transmission Tariff POD Point of Delivery POR Point of Receipt SOC System Operations Center SHPO Arkansas State Historic Preservation Office SHV Super High Voltage SW Switch Station TOC Transmission Operations Center



1. EXECUTIVE SUMMARY The purpose of this Facilities Study is to determine the transmission improvements needed to un-designate the study generator as a network generator for Entergy native load. This request from Entergy Services (EMO) is for 1MW of yearly network transmission service. The time period for this transfer is from 1/1/2008 until 1/1/2038. The direction of the transaction is EES to EES. This study was performed on the latest available 2012 summer peak case, using PSS/E and MUST software by Power Technologies Incorporated (PTI). Some of the upgrades detailed in this facility study were identified in a higher queued Transmission Service Request. The OASIS numbers, for those requests, are listed with each upgrade. If that prior request is not Confirmed, responsibility for funding this upgrade (in accordance with Entergy's OATT) will be required under this request. If the prior request is confirmed and the customer enters into a Transmission Service Agreement with Entergy, the responsibility to fund the upgrade will be a requirement under the prior request; however the funding party will have Financial Transmission Rights (FTRs) to any additional capacity created by the upgrade in accordance with Attachment T to Entergy's OATT. Use of any available capacity created as a result of that upgrade will require payment to the funding party for use of those FTRs in accordance with Attachment T. The facilities study identifies any transmission constraints resulting from the requested power transfer. The facilities study also includes cost estimates to correct any transmission constraints.

Under Entergy’s Independent Coordinator of Transmission which became effective on November 17, 2006, Entergy will recover these costs based on the Attachment T to Entergy’s OATT. Based on Attachment T, the ICT has determined these costs to be classified as Base Plan and Supplemental Upgrades.

2. SAFETY AWARENESS

Safety is a priority with Entergy. Safety will be designed into substations and lines. The designs will be done with the utmost safety for personnel in mind for construction, operation, and maintenance of the equipment. Should the work contained within this Facility Study be approved, a detailed Safety Plan will be formulated and incorporated within the project plan. All employees working directly or indirectly for Entergy shall adhere to all rules and regulations outlined within the Entergy Safety manual. Entergy requires safety to be the highest priority for all projects. All Entergy and Contract employees must follow all applicable safe work procedures.



3. SCOPE SUMMARY The Facilities Study has identified some transmission constraints. The constraints can be addressed in the following manner:

I. Cabot EHV: Construct 500/115 kV Substation Constraints were identified for this transmission service request which will be upgraded by the 2011 Cabot reliability project in the Entergy Transmission Construction Plan. This project has not yet been approved. If this project is approved, the customer will not be required to fund this upgrade. The addition of the Cabot 500/115kV substation will solve thermal and under voltage constraints in the Little Rock area. The thermal constraints are listed below:

Thermal Overloads

Limiting Element Contingency Element Morrilton East-Gleason 161kV LR Bringle-LR Pinnacle 161kV Morrilton East-Gleason 161kV LR Pinnacle 161/115kV auto Morrilton East-Gleason 161kV Mayflower 500/115kV auto #1 or #2 or #3 Morrilton East-Gleason 161kV Russellville East-Russellville South 161kV Morrilton East-Gleason 161kV Greers Ferry SPA-Heber Springs North 161kV Morrilton East-Gleason 161kV Oppello AECC-Morrilton West 161kV Morrilton East-Gleason 161kV Morrilton West-Morrilton East 161kV Gleason-Conway West 161kV Pleasant Hill-Mayflower 500kV Gleason-Conway West 161kV Greenbrier-Quitman 161kV Gleason-Conway West 161kV Gold Creek-Quitman 161kV Gleason-Conway West 161kV

Morgan-Mayflower 115kV Lake Conway-Mayflower 115kV

Mayflower-Lake Conway 115kV Conway West-Lake Conway 115kV

Morrilton East-Gleason 161kV

Mayflower-Lake Conway 115kV Gleason-Conway West 161kV Mayflower-Morgan 115kV Murray Hydro-Murray Hydro Tap 115kV Mayflower-Morgan 115kV Kanis-Mabelvale 115kV Mayflower-Morgan 115kV LR South-Ironton AECC-Wrightsville 115kV Mayflower-Morgan 115kV Fort Smith-ANO 500kV Mayflower-Morgan 115kV PB Dierks-Woodward 115kV Mayflower-Morgan 115kV Brinkley East-De Valls Bluff-Hazen 115kV Mayflower-Morgan 115kV LR West-LR Boyle Park 115kV Mayflower-Morgan 115kV Pleasant Hill 500/161kV auto Mayflower-Morgan 115kV LR South-LR 23rd & Spring-LR Fourche-LR East-

NLR Dixie 115kV Mayflower-Morgan 115kV Ward AECC-Beebe-Garner-Searcy Price 115kV Mayflower-Morgan 115kV LR Walton Heights-LR Cammack-LR Gaines 115kV Mayflower-Morgan 115kV Searcy Price 161/115kV auto Mayflower-Morgan 115kV LR Mann Road-Mabelvale 115kV Mayflower-Morgan 115kV Conway West 161/115kV auto Mayflower-Morgan 115kV Mayflower-Roland Road-LR Pinnacle 115kV Mayflower-Morgan 115kV Sherwood-Sylvan Hills 115kV



Mayflower-Morgan 115kV Mayflower-Sylvan Hills 115kV Mayflower-Morgan 115kV LR Hindman-LR South 115kV Mayflower-Morgan 115kV LR Port-LR Faulkner Lake-Lynch 115kV Mayflower-Morgan 115kV Mabelvale 500/115 kV auto #1 or #2 Mayflower-Morgan 115kV Independence SES-Tex East Station 6-Bald Knob-

Searcy Price 161kV Mayflower-Morgan 115kV Conway West-Lake Conway 115kV Mayflower-Morgan 115kV

LR Boyle Park-LR Rock Creek 115kV Kanis-LR W Markham 115kV

Mabelvale-LR Mann Road 115kV Mayflower-Morgan 115kV

LR Chicot-LR Mann Road 115kV

LR Alexander-LR Hindman 115kV

LR East-LR Fourche 115kV Kanis-LR W Markham 115kV

Mayflower-Morgan 115kV LR Pinnacle-LR Walton Heights 115kV

LR Rock Creek-LR South 115kV

LR West-LR 8th & Woodrow 115kV Mayflower-Morgan 115kV LR West-LR 8th & Woodrow 115kV

Mayflower-Morgan 115kV LR Pinnacle-LR Walton Heights 115kV

LR Chicot-LR Mann Road 115kV Mayflower-Morgan 115kV

Mabelvale-LR Alexander 115kV

Mayflower-Morgan 115kV LR Industrial-LR South 115kV Mabelvale-LR Alexander 115kV

Mayflower-Morgan 115kV LR Mann Road-LR Chicot-LR Industrial 115kV

LR Pinnacle-LR Walton Heights 115kV Morgan-Maumelle East SS-NLR Levy 115kV LR Pinnacle-LR Walton Heights 115kV

Mayflower-Morgan 115kV LR West-LR 8th & Woodrow 115kV

LR East-LR Fourche 115kV Mayflower-Morgan 115kV

LR Rock Creek-LR Boyle Park 115kV

LR East-LR Fourche 115kV Mayflower-Morgan 115kV

Morrilton East-Gleason 161kV

LR Port 115kV-LR 145th Street-Wrightsville 115kV

II. Add a 3rd Mabelvale 500/115kV Autotransformer or Upgrade both

Mabelvale 500/115kV Autotransformers The Mabelvale 500/115kV autotransformer #1 or #2 overloads for the loss of the Mabelvale 500/115kV autotransformer #2 or #1. It is required that either 1) a third Mabelvale 500/115kV autotransformer be added with capacity of 448MVA or 2) two existing Mabelvale 500/115kV autotransformers be upgraded to a capacity of 560MVA. The addition of the 3rd Mabelvale 500/115kV autotransformer or upgrade of the two existing autotransformers also relieves the following thermal constraint:

o Jacksonville North-Cabot 115kV transmission line for the loss of LR 145th Street-Wrightsville 115kV transmission line

1) If the option to add a 3rd 500/115kV Mabelvale autotransformer is chosen, the LR Mann Road-LR Chicot 115kV transmission line must be upgraded as it overloads for the



loss of Mabelvale-LR Alexander 115kV transmission line. The LR Mann Road-LR Chicot 115kV transmission line needs to have a capacity of 332MVA or greater on all components. The line conductor has a rated capacity of 353MVA, but the LR Mann 115kV switch #B4651 and #B6415 and the LR Chicot 115kV switch #B0964 are rated at 1600A or 319MVA. Also, the LR Mann 115kV switch #B4600 is rated at 1200A or 239MVA. These switches need to be upgraded to 2000A.

III. Install a 125MVAR Static VAR Compensator (SVC) at Lynch A 125 MVAR SVC at Lynch needs to be installed to overcome the following under-voltage situations: Substation Contingency Element De Valls Bluff 115kV Hazen 115kV Carlisle 115kV Lonoke East 115kV

Brinkley East-De Valls Bluff 115kV

Hazen 115kV Carlisle 115kV

De Valls Bluff-Hazen 115kV

IV. Upgrade the Morrilton East-Gleason 161kV Transmission Line

The Morrilton East-Gleason 161kV transmission line overloads for the loss of the following:

o Mayflower-Lake Conway-Conway West 115kV transmission line o Conway West 161/115kV autotransformer o Pleasant Hill-Greenbrier-Quitman 161kV transmission line o Gold Creek-Quitman 161kV transmission line o Pleasant Hill-Mayflower 500kV transmission line

It is required that the Morrilton East-Gleason 161kV transmission line be upgraded from a capacity of 223MVA to at least 304MVA.

V. Upgrade the Gleason-Conway West 161kV Transmission Line

The Gleason-Conway West 161kV transmission line overloads for the loss of the Mayflower-Lake Conway 115kV or the Pleasant Hill-Greenbrier 161kV transmission line. It is required that the Gleason-Conway West 161kV transmission line be upgraded from a capacity of 223MVA to at least 284MVA.

VI. Upgrade the LR Rock Creek-LR South 115kV Transmission Line The LR Rock Creek-LR South 115kV transmission line overloads for the loss of the Mabelvale-Kanis 115kV or Kanis-LR W Markham 115kV transmission line. The LR Rock




Creek-LR South 115kV transmission line needs to have a capacity of 344MVA or greater on all components. The line conductor has a rated capacity of 353MVA, but the LR Rock Creek 115kV switch #B3340 and LR South 115kV switch #B3315 are rated at 1600A or 319MVA. These switches need to be upgraded to 2000A.

VII. Upgrade the LR West-LR Boyle Park 115kV Transmission Line The LR West-LR Boyle Park 115kV transmission line overloads for the loss of the Mabelvale-Kanis 115kV or Kanis-LR W Markham 115kV transmission line. The LR West-LR Boyle Park 115kV transmission line needs to have a capacity of 261MVA or greater on all components. The line conductor has a rated capacity of 261MVA, but the LR West 115kV breaker #B3314 and associated switches are rated at 1200A or 239MVA. These breaker and switches need to be upgraded to 1600A.

VIII. Upgrade the LR Pinnacle-LR Walton Heights 115kV Transmission Line

The LR Pinnacle-LR Walton Heights 115kV transmission line overloads for the loss of Kanis-LR W Markham 115kV or the Mayflower-Morgan 115kV transmission line. The LR Pinnacle-LR Walton Heights 115kV transmission line needs to have a capacity of 168MVA or greater on all components. The line conductor has a rated capacity of 176MVA, but the line trap at LR Pinnacle is rated at 800A or 159MVA. This line trap needs to be upgraded to 1200A.

IX. Upgrade the Mabelvale-LR Mann Road 115kV Transmission Line The Mabelvale-LR Mann Road 115kV transmission line overloads for the loss of the Mabelvale-LR Alexander 115kV transmission line. The Mabelvale-LR Mann Road 115kV transmission line needs to have a capacity of 341MVA or greater on all components. The line conductor has a rated capacity of 353MVA, but the Mabelvale 115kV breaker #B5164, associated switches #B6493, #B5165, and #B5163, and line trap and the LR Mann Road 115kV switch #B6415 are rated at 1600A or 319MVA. These breaker, switches, and line trap need to be upgraded to 2000A.

X. Upgrade the Mabelvale-LR Alexander 115kV Transmission Line

The Mabelvale-LR Alexander 115kV transmission line overloads for the loss of the Mabelvale-LR Mann Road 115kV transmission line. The Mabelvale-LR Alexander 115kV transmission line needs to have a capacity of 337MVA or greater on all components. The line conductor has a rated capacity of 353MVA, but the Mabelvale 115kV switches #B6494, #B3365, and #B3363, and line trap and the LR Alexander 115kV switch #B6433 are rated at 1600A or 319MVA. These switches and line trap need to be upgraded to 2000A.


4. SCOPE DETAILS

I. Required Transmission Line Upgrades

A. Morrilton East-Gleason 161kV (304 MVA Required)

B. Gleason-Conway West 161kV (284 MVA Required)

C. LR Rock Creek-LR South 115kV (344 MVA Required)

D. LR West-LR Boyle Park 115kV (261 MVA Required)

E. LR Pinnacle-LR Walton Heights 115kV (168 MVA Required)

F. Mabelvale-LR Mann Road 115kV (341 MVA Required)

G. Mabelvale-LR Alexander 115kV (337 MVA Required)

II. Additional Substation Reviews

A. Morrilton East (1092 Amps Required)

B. Gleason (1092 / 1020 Amps Required)

C. Conway West (1020 Amps Required)

D. LR Rock Creek (1729 Amps Required)

E. LR South (1729 Amps Required)

F. LR West (1312 Amps Required)

G. LR Boyle Park (1312 Amps Required)

H. LR Pinnacle (844 Amps Required)

I. LR Walton Heights (844 Amps Required)

J. Mabelvale (1714 / 1714 Amps Required)

K. LR Mann Road (1714 Amps Required)

L. LR Alexander (1714 Amps Required)

III. Required Substation Upgrades

A. Add a 3rd Mabelvale 500/115kV Autotransformer or Upgrade both Mabelvale 500/115kV Autotransformers



1. LR Mann Road – LR Chicot Line Upgrade 2. LR Mann Road Substation Review (1669 amps) 3. LR Chicot Substation Review (1669 amps)

B. Install a 125MVAR Static VAR Compensator (SVC) at Lynch

IV. New Substation

A. Cabot EHV: Construct 500/115 kV substation

V. Detailed Transmission Scopes

A. Morrilton East-Gleason 161kV (13.03 Miles) (304 MVA) Install 3, Steel, Self-Supported, 3-pole dead-end structures. Base-plated poles with drilled pier foundations. (9 poles, 9 drilled pier foundations) Install 8, Steel, Self-Supported, single pole dead-end structures. Base-plated poles with drilled pier foundations. (8 poles, 8 drilled pier foundations) Install 105, Steel, Single pole tangent structures. 85 of these structures will be installed as direct embed, 40 of which will be in hard rock. The other 20 structures will be installed in socket piles. (105 poles, 20 socket piles) Install 279,895# of 954MCM ACSR Cardinal Conductor. Install 75,850 ft. of (0.528, 24) fiber OPGW, including a splice box at each dead-end. Install 2,775 ft. of 7#7 AW shield wire. Install 396 Insulators. (315 Braced Post, 72 Dead-end, 9 Jumper Line Post) Remove 11, wood, 3-pole, guyed, dead-end structures. Remove 83, wood, H-frame structures. Remove 22, wood, single pole structures Remove 180,000 lbs of 666MCM, ACSR, Flamingo conductor. Remove 140,000 ft. of 3/8 HSG Shield Wire. Remove 396 Insulators. Note that this segment includes 3 Interstate Highway crossings, 5 U.S. Highway crossings, 1 Rail Road crossing and a few creek crossings.



Construction activity for this work will take place on the ROW. 80% of this line is in residential area. All damages will be held to a minimum.

B. Gleason-Conway West 161kV (2.29 Miles) (284 MVA) Install 4, Steel, Self-Supported, 3-pole dead-end structures. Base-plated poles with drilled pier foundations. (12 poles, 12 drilled pier foundations) Install 17, Steel, Single pole tangent structures. 15 of these structures will be installed as direct embed, 10 of which will be in hard rock. The other 2 structures will be installed in socket piles. (17 poles, 2 socket piles) Install 2, Steel, H-frame tangent structures. These will be installed on both sides of the 500kV line crossing and both will be direct embedded. Install 47,000# of 954MCM ACSR Cardinal Conductor. Install 12,720 ft. of (0.528, 24) fiber OPGW, including a slice box at each dead-end. Install 3,775 ft. of 7#7 AW shield wire. Install 96 Insulators. (51 Braced Post, 30 Dead-end, 9 Jumper Line Post, 6 Suspension) Remove 4, wood, 3-pole, guyed, dead-end structures. Remove 19, wood, H-frame structures. Remove 30,000 lbs of 666MCM, ACSR, Flamingo conductor. Remove 23,200 ft. of 3/8 HSG Shield Wire. Remove 96 Insulators. Construction activity for this work will take place on the ROW. 80% of this line is in residential area. All damages will be held to a minimum.

C. LR Rock Creek-LR South 115kV (344 MVA)

No Work Required

D. LR West-LR Boyle Park 115kV (261 MVA) No Work Required

E. LR Pinnacle-LR Walton Heights 115kV (168 MVA)

No Work Required



F. Mabelvale-LR Mann Road 115kV (341 MVA) No Work Required

G. Mabelvale-LR Alexander 115kV (337 MVA)

No Work Required

VI. Detailed Substation Review – Verify Equipment Ratings

A. Morrilton East (1092 Amps) Substation Work: Replace the existing 800A line trap on the A phase of the Gleason line bay with 2000A capacity equipment. Upgrade all necessary bus, conductor, and connectors. Relay Work: Purchase and install one (1) 161kV, 2000A line trap per Entergy Standard PM0802, latest revision. Line trap to be pre-tuned to 120kHz.

B. Gleason (1092 Amps / 1020 Amps)

Substation Work: The existing through bus is 666 MCM Aluminum conductor with a capacity of 885 A. The through bus will need to be upgraded to a minimum capacity of 1,090 A. The upgraded bus will be 1272 MCM Aluminum conductor. All necessary bus, conductor, and connectors will also be upgraded. Relay Work: No relay wok required.

C. Conway West (1020 Amps) Substation: Replace the existing 800A line trap on the A phase of the Gleason line bay with 2000A capacity equipment. Upgrade all necessary bus, conductor, and connectors. Relay: Purchase and install one (1) 161kV, 2000A line trap per Entergy Standard PM0802, latest revision. Line trap to be pre-tuned to 120kHz

D. LR Rock Creek (1729 Amps)

Substation Work: Replace the existing 1600A line switch #B3340 with a 2000A vertical break, horizontal mount, disconnect switch with quick break attachment. This scope assumes that the existing motor operator will be replaced as well. Replace all appropriate bus, conductor, and fittings.



Relay Work: Design connection diagram for new motor operator on LDS B3340. Revise RTU drawings, AC/DC panel drawing, and cable pull list drawing. Order new control cables. Revise RTU host edit sheets.

E. LR South (1729 Amps)

Substation Work: Upgrade LR Rock Creek line bay to 1,729 A capacity. This includes replacing existing switches #B3315 and the two breaker switches as well as all necessary bus, conductor, and fittings. The new switches will be vertical break, horizontal mount 2,000 A disconnect switches. Relay Work: There is no relay design work associated with this scope.

F. LR West (1312 Amps)

Substation: Upgrade LR Boyle Park line bay to 1,312 A capacity. This includes replacing existing switches #B1475 and the two breaker switches, breaker B3314, as well as all necessary bus, conductor, and fittings. The new switches will be vertical break, horizontal mount 2,000 A disconnect switches. The new breaker will be a 115kV 2000A 40kA gas circuit breaker. Relay: Design breaker connection diagram for upgraded breaker B3314 and revise Line/Breaker panel drawings, RTU drawings, operational one-line drawing, DC panel drawing, and cable pull list drawing. Order new control cables, RTU S-card, and RTU terminal blocks Revise RTU host edit sheets.

G. LR Boyle Park (1312 Amps) No Work Required

H. LR Pinnacle (844 Amps) Substation Work: Replace the existing 800A line trap on the B phase of the LR Walton Heights line bay with 2000A capacity equipment. Upgrade all necessary bus, conductor, and connectors. Relay Work: Purchase and install one (1) 115kV, 2000A line trap per Entergy Standard PM0802, latest revision. Line trap to be pre-tuned to 120kHz.

I. LR Walton Heights (844 Amps)

No work required



J. Mabelvale (1714 Amps / 1714 Amps) Substation Work: Install (6) 2000A GOAB disconnect switches to replace 1600A switches. Install (1) 2000A Gas Circuit Breaker to replace the existing1600A breaker. Install (2) 2000A CVT’s and (2) Line Traps to replace 1600A existing equipment. Replace existing bus and jumpers with new conductor rated above 1711A. Relay Work: Design breaker connection diagram for upgraded breaker B5164 and revise Line/Breaker panel drawings, RTU drawings, operational one-line drawing, DC panel drawing, and cable pull list drawing. Order new control cables. Revise RTU host edit sheets. Purchase and install one (2) 115kV, 2000A line traps and tuners per Entergy Standard PM0802, latest revision. Line traps to be pre-tuned to 120kHz. Purchase and install one (2) 115kV CCVT’s, and CCVT junction boxes.

K. LR Mann Road (1714 Amps)

Substation Work: Install (1) 2000A MOD line disconnect switch with whips to replace 1600A switch, B6415. Replace existing jumpers with double bundle 954MCM ACSR conductor. Relay Work: Design connection diagram for new motor operator on LDS B6415. Revise RTU drawings, AC/DC panel drawing, and cable pull list drawing. Order new control cables. Revise RTU host edit sheets.

L. LR Alexander (1714 Amps)

Substation Work: Install (1) 2000A MOD line disconnect switch with whip to replace 1600A switch, B6433. Replace 500MCM jumper with 666MCM ACSR conductor. Relay Work: Design connection diagram for new motor operator on LDS B6433. Revise RTU drawings, AC/DC panel drawing, and cable pull list drawing. Order new control cables. Revise RTU host edit sheets.

VII. Detailed Required Substation Upgrades

A. Add a 3rd Mabelvale 500/115kV Autotransformer or Upgrade both Mabelvale 500/115kV Autotransformers

Both of the above options were evaluated based on cost, maintenance, and operability. Adding the 3rd autotransformer was selected. As a part of this work, the 500kV yard must be converted to a modified breaker and a half scheme.



Electrical: A new 500/115kV 448MVA autotransformer will be installed at the Mabelvale 500kV yard. The existing 6 breaker ring bus will be expanded to three bays of a folded breaker-and-a-half arrangement. A new line bay will be installed in the 115kV yard to accommodate the new autotransformer. Major Equipment: (1) 500/115kV 448MVA autotransformer (3 single phase units and 1 spare) (3) 500kV gas circuit breakers (1) 115kV gas circuit breaker (7) 500kV vertical break switches (3) 115kV vertical break switches Relay: Four (4) Bus Differential Panels Three (3) Breaker Control Panels One (1) Step Distance Line/Bkr Control Panel One (1) Stand alone AC Distribution Panel One (1) Stand alone DC Distribution Panel Two (2) Autotransformer protection panels Six (6) 500kV CCVT’s Three (3) 115kV CCVT’s Three (3) single phase CCVT junction boxes Two (2) three phase CCVT junction boxes Add two (2) status cards to the existing D20 RTU Add one (1) interposing relay control card to the existing RTU 500kV Transmission Line: Install one new Steel, Self-Supported, 3 pole dead-end angle structure. Base plated poles with drilled pier foundations. (3 poles, 3 drilled pier foundations) Install 4,257 # of 954MCM ACSR Rail Conductor. (3960 ft) Install 660 ft. of 7#7 AW shield wire. Install 9, 500kV Insulator Assemblies (9 Dead End Insulators) Remove two 500kV lattice tower. Remove 9,675 # of 954MCM ACSR Rail Conductor. (9000 ft) Remove 2,000 ft. of 7#7 AW shield wire. Remove 12, 500kV insulators from 2 lattice structures.



A.1 – LR Mann Road (1669 Amps)

Substation: Upgrade line switch B4651 to 2000A capacity. This includes replacing the existing switch, quick break attachment, and the associated through bus. The new switch will be a “V” break, horizontal mount 2,000 A disconnect switch. The through bus will upgraded to 1666A minimum capacity. Relay: No Work Required A.2 - LR Chicot (1669 Amps)

Substation: Upgrade line switch B0964 to 2000A capacity. This includes replacing the existing switch, motor operator, quick break attachment, and the associated through bus. The new switch will be a vertical break, horizontal mount 2,000 A disconnect switch. The through bus will upgraded to bundled 954MC conductor. Relay: • Design connection diagram for new motor operator on MOD B0964. • Revise RTU drawings, AC/DC panel drawing, and cable pull list

drawing. • Order new control cables. • Revise RTU host edit sheets.

B. Install a 125MVAR Static VAR Compensator (SVC) at Lynch

Substation Work: The SVC installation will be handled as part of an EPC contract with the selected vendor. Entergy will provide a cleared and graded plot of land approximately 300’ x 200’. In order to connect the SVC to the 115kV yard at Lynch Substation, a new bay will be installed on the West side of the station. This scope assumes that the station will need to be expanded approximately 100’ to the West to accommodate the new bay. The new bay will consist of one 115kV gas circuit breaker connecting the SVC to both the operating and transfer busses. This scope also assumes that the existing control house will be expanded approximately 500 square feet. Major Equipment: (1) 115kV gas circuit breaker (3) 115kV vertical break disconnect switches (20) single phase bus supports (1) SVC – EPC contract with approved vendor 2 acres of expanded site development



Relay: • The SVC protection will be included as part of the EPC contract.

Entergy will supply a node to tie into the West bus as well as backup distance protection into the SVC unit.

• Design, purchase and install one (1) Line/Breaker Control Panel referencing the SVC Line Panel installed at Porter Substation in GSU Texas. This panel uses an SEL 421 relay for step distance protection into the SVC as well as all breaker protection and control functions.

• Purchase and install three (3) 115kV Potential Transformers. The SVC protection and control requires potential transformers due to their transient response characteristics.

• Purchase and install one (1) Three Phase Bus Potential Junction Box specially modified for SVC application. Use the SVC node junction box at Porter Substation for reference.

• The new circuit breaker will be incorporated into the existing B-Pro bus differential relaying installed on the 115kV West bus.

• Install approximately 25000 ft of control cable. • Install approximately 2000 ft of ADSS fiber optic cable between the SVC

and substation control houses. • Install any necessary ancillary fiber equipment. • RTU has enough spare points.

VIII. Detailed New Substation Scope

A. Cabot 500/161 kV Substation Substation: Forty (40) acres of property will be required for the Cabot EHV Station. This will be a new switchyard with both a 500kV and 115kV yard. The yards will be connected by a 500/115kV 500MVA autotransformer (3 single phase units and 1 spare). The 500kV yard will be set up as a 3 breaker ring bus with the ability to be expanded to a folded breaker-and-a-half arrangement. The 115kV yard will be set up as an operating and transfer bus arrangement with one bus tie breaker. Major Equipment: (1) 500/115kV 500MVA autotransformer (3 single phase units and 1 spare) (3) 500kV gas circuit breakers (7) 115kV gas circuit breakers (9) 500kV vertical break switches (20) 115kV vertical break switches (1) 30’ x 60’ control house Relay: Major Equipment: (11) 500kV CCVT (4) 500kV 3000A Line Trap (4) Line Panel (3) Breaker Control Panels (1) 500kV Buss Differential



(1) Auto-Transformer Differential Panel (Primary) (1) Auto-Transformer Differential Panel (BU) (1) Auto-Transformer Step distance Panel (BU 115 kV) (5) Line/Breaker Control Panel (8) 115kV CCVT (5) 115kV 3000A Line traps (9) Line tuners (1) 115kV Bus Differential Panel (1) RTU (2) Battery set/rack/charger (1) Stand Alone AC Panel (2) Stand alone DC Panel (16) Junction Boxes Transmission Lines: 21.82 acres of Right of Way will be required for the new lines 500kV Line Work: Install one new Steel, Self-Supported, 3 pole dead-end angle structure. Base plated poles with drilled pier foundations. (3 poles, 3 drilled pier foundations) Install 2,700 # of 954MCM ACSR Rail Conductor. Install 600 ft. of 7#7 AW shield wire. Install 12, 500kV Insulator Assemblies (12 Dead End Insulators (6 on the substation structures), 3 Jumper Line Post Insulators) Remove one 500kV lattice tower and terminate existing line to a new substation structure and new 3 pole dead-end above. Remove 8,127 # of 954MCM ACSR Rail Conductor. Remove 1,680 ft. of 7/16” EHSG Class C shield wire. Remove 3, 500kV insulators from lattice structure. 115kV Line Work: Install 1, Steel, Self-Supported, 3-pole dead-end structure. Base-plated poles with drilled pier foundations. (3 poles, 3 drilled pier foundations) Install 4, Steel, Self Supported, Single pole, Dead-End Angle structures. Base plated poles with drilled pier foundations.




Install 1, Steel, Single pole tangent structures. Direct Embed foundation Install 1, Steel, H-frame tangent structures. Direct Embed foundation Install 11,700 # of 1590MCM ACSR Lapwing Conductor. Install 3,400 ft. of 7#7 AW shield wire. Install 51 Insulators. (3 Braced Post, 36 Dead-end, 9 Jumper Line Post, 3 Suspension) Remove 3, wood, H-frame structures. (152, 153, 154) Remove 7,356 lbs of 1590MCM, ACSR, Lapwing conductor. Remove 2,740 ft. of 5/16 HSG Shield Wire. Remove 9 Suspension Insulators.

IX. Permit Requirements

Permits will be required for upgrading the Morrilton East – Gleason – Conway West transmission line. The specific permits will be determined during the project execution phase.


5. COSTS The ICT has reviewed and determined the required upgrade associated with the Cabot EHV project is included in the 2008 ICT Base Plan. The remaining upgrades will be considered as Supplemental Upgrades. For more information on cost responsibility for Base Plan and Supplemental Upgrades, see Attachment T to Entergy’s OATT. The costs shown in the table include overheads and AFUDC, but do not include tax gross up. The estimated tax gross-up rate of 32.693% may apply to the project. All cost estimates have been calculated based on the Estimated Completion Year.

Projected Costs Description Estimated

Completion Year

Total Cost Base Plan Upgrades

Supplemental Upgrades

Morrilton East – Gleason 161kV Line

2010 $14,152,332 $14,152,332

Morrilton East Substation 2010 $101,627 $101,627 Gleason Substation 2010 $92,021 $92,021

Gleason – Conway West 161kV Line

2011 $3,945,692 $3,945,692

Conway West Substation 2011 $107,603 $107,603 LR Rock Creek - LR South 115kV Line

NA $0 $0

LR Rock Creek Substation 2011 $182,037 $182,037 LR South Substation 2011 $247,023 $247,023

LR West – Boyle Park 115kV Line NA $0 $0 LR West Substation 2011 $544,354 $544,354

LR Boyle Park Substation NA $0 $0 LR Pinnacle – LR Walton Heights NA $0 $0

LR Pinnacle Substation 2011 $153,332 $153,332 LR Walton Heights Substation NA $0 $0

Mabelvale–LR Mann Road 115kV Line

NA $0 $0

Mabelvale Substation 2011 $960,118 $960,118 LR Mann Road 2011 $204,025 $204,025

Mabelvale –LR Alexander 115kV Line

NA $0 $0

LR Alexander 2011 $153,260 $153,260 Upgrade Mabelvale Substation/Line 2010 $31,649,000 $31,649,000

LR Mann Road – LR Chicot NA $0 $0 LR Mann Rd 2010 $372,098 $372,098

LR Chicot 2010 $224,649 $224,649 Lynch Substation 2011 $28,091,473 $28,091,473

New Cabot EHV Substation/Line 2011 $47,666,000 $47,666,000 Total $128,846,644 $47,666,000 $81,180,644

The estimates and schedules provided as a result of this Facility Study document contain a number of assumptions. The estimated costs and/or schedule will be directly impacted should these assumptions not materialize. Also, the estimates and schedules assume the work will be completed by Entergy and associated contractors. Should the work require being given to an Engineering, Procurement, & Construction firm to complete to maintain schedules, the costs associated with the project may be affected.



6. SCHEDULE A detailed schedule will be prepared subsequent to customer approval. The line upgrades are dependent on obtaining outages for the line work. If outages cannot be obtained or must be sequenced due to seasonal requirements, additional time will be required to complete the upgrades. The following are rough durations

Project Definition Includes surveys, soil borings, and Project Execution Plan 30 Weeks

Transmission Lines Includes design, material procurement, and construction, and commences upon Project Execution Plan and funding approval.

Line Upgrade Completion in Weeks Morrilton East – Gleason 161 kV Line 84 Gleason – Conway West 161 kV Line 52 LR Rock Creek - LR South 115 kV Line NA LR West – Boyle Park 115 kV Line NA LR Pinnacle – LR Walton Heights NA Mabelvale–LR Mann Road 115 kV Line NA Mabelvale –LR Alexander 115 kV Line NA Mabelvale 500kV Transmission Line 30 LR Mann Rd – LR Chicot NA Cabot 500 & 115kV Transmission Lines 44

Substations Includes design, material procurement, and construction, and commences upon Project Execution Plan and funding approval.

Substation Completion in Weeks

Morrilton East Substation 43 Gleason Substation 43

Conway West Substation 43 LR Rock Creek Substation 43

LR South Substation 43 LR West Substation 43

LR Boyle Park Substation NA LR Pinnacle Substation 43

LR Walton Heights Substation NA Mabelvale Substation 52

LR Mann Road 43 LR Alexander 43

Upgrade Mabelvale Substation 75 LR Mann Rd 43

LR Chicot 43 Lynch Substation 75

New Cabot EHV Substation 70




Notes to Duration Schedules • All construction work requiring outages will be performed during the off-peak

load season. Line outages will be discussed with the SOC/TOC and the assumption is made that line outages will be executed as planned. However, last minute denial of outages by the SOC/TOC along with resulting schedule delay is a possibility

• Construction will occur in 2009 through 2011 • Substation construction will be completed during transmission line outages. • Transmission Line and Substation projects will begin subsequent to Definition

phase Project Execution Plan • Schedule durations are high level estimates at this time. Upon project

approval, a detailed schedule will be produced. • Acceleration of project can not occur due to extensive lead times.

Equipment could be purchased during the definition phase with customer approval and the durations could be minimized. Upon project approval, a detailed schedule will be produced.


7. CONFIRMED RESERVATIONS OASIS# PSE MW Begin End 140912 NRG Power Marketing 103 01/01/98 01/01/08 250778 (delisting) Entergy Services, Inc. (EMO) 1 07/02/98 07/01/11 392740 Ameren Energy Inc. 165 04/12/99 01/01/09 569011 Entergy Services, Inc. (EMO) 242 03/01/00 01/01/14 731017 South Mississippi Electric Power Assoc. 75 01/01/01 06/01/09 759196 Entergy Services (EMO) 143 01/01/01 01/01/21 759294 East Texas Electric Cooperative 31 01/01/01 01/01/18 810207 South Mississippi Electric Power Assoc. 300 01/01/02 01/01/20 810234 South Mississippi Electric Power Assoc. 300 01/01/02 01/01/20 850239 Municipal Energy Agency of Mississippi 19 05/01/01 01/01/10 850304 Municipal Energy Agency of Mississippi 13 05/01/01 06/01/10 851493 Municipal Energy Agency of Mississippi 13 05/01/01 06/01/10 1019492 South Mississippi Electric Power Assoc. 51 01/01/02 01/01/18 1024194 City Water & Light, Jonesboro 83 01/01/03 01/01/10 1024198 City Water & Light, Jonesboro 168 01/01/03 01/01/10 1035455 South Mississippi Electric Power Assoc. 280 01/01/03 01/01/08 1036858 South Mississippi Electric Power Assoc. 280 01/01/08 01/01/21 1084342 East Texas Electric Cooperative 50 01/01/05 01/01/09 1084344 East Texas Electric Cooperative 50 01/01/05 01/01/09 1084345 East Texas Electric Cooperative 75 01/01/05 01/01/09 1096986 Tennessee Valley Auth BPT 73 09/01/03 09/01/13 1099991 City Water & Light, Jonesboro 83 01/01/10 01/01/16 1099997 City Water & Light, Jonesboro 168 01/01/10 01/01/16 1105665 Entergy Services, Inc. (EMO) 185 02/01/03 02/01/16 1105666 Entergy Services, Inc. (EMO) 91 02/01/03 02/01/27 1105668 Entergy Services, Inc. (EMO) 206 02/01/03 02/01/27 1126821 Entergy Services, Inc. (EMO) 101 05/01/04 05/01/29 1139973 South Mississippi Electric Power Assoc. 95 05/01/03 12/30/28 1139975 South Mississippi Electric Power Assoc. 95 05/01/04 12/31/29 1139977 South Mississippi Electric Power Assoc. 95 05/01/05 12/31/29 1139982 South Mississippi Electric Power Assoc. 130 01/01/03 01/01/20 1151106 Entergy Services, Inc. (EMO) 20 06/01/10 06/01/29 1161925 CLECO Power LLC (Gen) 12 08/01/03 01/01/10 1161927 CLECO Power LLC (Gen) 7 08/01/03 01/01/10 1161928 CLECO Power LLC (Gen) 7 08/01/03 01/01/10 1168061 Entergy Services, Inc. (EMO) 80 08/01/04 02/01/28 1168408 Entergy Services, Inc. (EMO) 247 08/01/04 02/01/28 1192287 (1140407) Entergy Services, Inc. (EMO) 725 01/01/05 09/01/33 1202470 NRG Power Marketing 91 04/01/04 04/01/09 1286481 Merrill Lynch Commodities 11 01/01/00 01/01/10 1289686 (delisting) Entergy Services Inc. (EMO) 1 06/01/07 06/01/30 1294132 Entergy Services, Inc. (EMO) 526 01/01/06 01/01/35 1309874 East Texas Electric Cooperative 75 01/01/09 01/01/17 1309875 East Texas Electric Cooperative 50 01/01/09 01/01/17 1309876 East Texas Electric Cooperative 50 01/01/09 01/01/17



OASIS# PSE MW Begin End 1310448 (1284799)

(delisting) Entergy Services Inc. (EMO) 1 06/01/07 06/01/30

1328125 CLECO Power Marketing 35 01/01/06 01/01/11 1340017 Plum Point Energy Associates 40 03/01/10 03/01/40 1340019 Plum Point Energy Associates 35 03/01/10 03/01/40 1340028 Plum Point Energy Associates 50 03/01/10 03/01/30 1340029 Plum Point Energy Associates 50 03/01/10 03/01/30 1340665 Entergy Services, Inc. (EMO) 200 01/01/06 01/01/09 1340673 Entergy Services, Inc. (EMO) 50 06/01/07 06/01/08 1340674 Entergy Services, Inc. (EMO) 50 06/01/08 06/01/09 1346435 Entergy Services, Inc. (EMO) 100 06/01/07 06/01/08 1346437 Entergy Services, Inc. (EMO) 100 06/01/08 06/01/09 1346440 Entergy Services, Inc. (EMO) 200 06/01/07 06/01/08 1346441 Entergy Services, Inc. (EMO) 200 06/01/08 06/01/09 1346444 Entergy Services, Inc. (EMO) 179 02/01/07 02/01/08 1348508 CLECO Power Marketing 10 01/01/06 01/01/10 1352704 (1340032) Plum Point Energy Associates 5 03/01/10 03/01/40 1356328 Municipal Energy Agency of Mississippi 40 06/01/10 06/01/40 1372645 Morgan Stanley Commodities Group 102 01/01/07 01/01/08 1372646 Morgan Stanley Commodities Group 102 01/01/07 01/01/08 1373643 City of Conway 25 03/01/10 03/01/40 1373714 East Texas Electric Cooperative 63 01/01/10 01/01/30 1375299 Louisiana Generating LLC 11 03/01/06 03/01/11 1375300 Louisiana Generating LLC 8 03/01/06 03/01/11 1375301 Louisiana Generating LLC 5 03/01/06 03/01/11 1375559 CLECO Power LLC 675 12/01/06 12/01/16 1380484 Osceola Light & Power 9 09/01/09 09/01/39 1381068 Plum Point Energy Associates 100 06/01/10 06/01/11 1381398 Constellation Energy Group 34 01/01/06 01/01/36 1381400 Constellation Energy Group 34 01/01/06 01/01/36 1381404 Constellation Energy Group 17 01/01/06 01/01/36 1381406 (1325187) Constellation Energy Group 17 01/01/06 01/01/36 1383852 AECC 550 01/01/07 01/01/17 1385835 (1363730) City of Prescott 22 04/01/06 04/01/09 1385842 South Mississippi Electric Power Assoc. 100

3801/01/09 01/01/10

01/01/10 01/01/11

1387272 CLECO Power 11 04/01/06 04/01/16 1389008 NRG Power Marketing 270 06/01/07 06/01/08 1389848 Louisiana Energy & Power Authority 6 02/01/07 02/01/08 1401985 Constellation Commodities Group 42 08/01/06 08/01/36 1403756 Constellation Commodities Group 100 01/01/07 01/01/08 1403757 Constellation Commodities Group 100 01/01/07 01/01/08 1406786 South Mississippi Electric Power Assoc. 100 04/01/10 04/01/40 1407894 Morgan Stanley Commodities Group 102 01/01/08 01/01/09 1407895 Morgan Stanley Commodities Group 102 01/01/08 01/01/09 1408199 South Mississippi Electric Power Assoc. 100 04/01/10 04/01/40 1408981 NRG 92 01/01/07 01/01/10 1410022 (1340037) City of North Little Rock 60 03/01/10 03/01/40



OASIS# PSE MW Begin End 1412068 NRG 103 01/01/07 01/01/08 1413110 NRG Power Marketing 100 01/01/07 01/01/09 1414925 Constellation Commodities Group 22 01/01/07 01/01/08 1414927 Constellation Commodities Group 50 01/01/07 01/01/08 1416650 NRG Power Marketing 100 01/01/07 01/01/08 1422496 Constellation Commodities Group 57 01/01/07 01/01/08 1422498 Constellation Commodities Group 9 01/01/07 01/01/08 1425495 East Texas Electric Cooperative 50 03/01/10 03/01/45 1431621 South Mississippi Electric Power Assn. 200 01/01/07 01/01/08 1443976 (1424383) Constellation Commodities Group 9 01/01/07 01/01/08 1435972 Entergy Services, Inc. (EMO) 150 05/01/07 05/01/10 1435973 Entergy Services, Inc. (EMO) 135 05/01/08 05/01/10 1436590 MidAmerican Energy 50 01/01/07 01/01/08 1436591 MidAmerican Energy 50 01/01/07 01/01/08 1436592 MidAmerican Energy 50 01/01/07 01/01/08 1436593 MidAmerican Energy 50 01/01/07 01/01/08 1440358 NRG Power Marketing 100 03/01/07 03/01/08 1442295 NRG Power Marketing 3 07/01/07 07/01/09 1442453 NRG Power Marketing 320 06/01/07 06/01/26 1448054 NRG Power Marketing 103 01/01/08 01/01/09 1448057 NRG Power Marketing 103 01/01/08 01/01/09 1449494 Entergy Services, Inc. (EMO) 154 06/01/07 06/01/09 1449495 Entergy Services, Inc. (EMO) 322 06/01/09 06/01/59 1449881 Cargill Power 103 01/01/08 01/01/09 1452308 NRG Power Marketing 100 01/01/08 01/01/09 1452603 NRG Power Marketing 100 09/01/07 09/01/08 1435303 East Texas Electric Coop 150 01/01/07 01/01/40 1453402 NRG Power Marketing 103 01/01/09 01/01/10 1456636 CLECO Power LLC 10 10/01/07 10/01/12 1458787 Louisiana Energy & Power Authority 2 03/31/07 03/31/08 1464028 East Texas Electric Coop 168 01/01/10 01/01/40 1466197 NRG Power Marketing 206 01/01/09 01/01/10 1466561 Constellation Energy 50 01/01/08 01/01/09 1466562 Constellation Energy 25 01/01/08 01/01/09 1470811 East Texas Electric Coop 186 01/01/10 01/01/40 1477069 Entergy Services 10 11/01/07 11/01/37 1477256 NRG Power Marketing 103 01/01/08 01/01/09 1479051 Ameren Energy Mktg 103 07/01/08 07/01/09 1485805 NRG Power Marketing 103 07/01/08 07/01/09 1494443 Constellation Energy 35 01/01/08 01/01/09 1494445 Constellation Energy 75 01/01/08 01/01/09 1494446 Constellation Energy 75 01/01/08 01/01/09 1494450 Constellation Energy 25 01/01/08 01/01/09



Pre-888 Transactions

OASIS # PSE MW Begin End 1219160 NRG Power Marketing 91 4/1/2009 4/1/2014 1332606 East Texas Electric Cooperative 55 1/1/2006 1/1/2017 1412155 Entergy Services, Inc. (EMO) 1718 1/1/2007 1/1/2038 1412156 Entergy Services, Inc. (EMO) 741 1/1/2007 1/1/2038 1412158 Entergy Services, Inc. (EMO) 1867 1/1/2007 1/1/2038 1412160 Entergy Services, Inc. (EMO) 1142 1/1/2007 1/1/2038 1412161 Entergy Services, Inc. (EMO) 59 1/1/2007 1/1/2038 1412162 Entergy Services, Inc. (EMO) 148 1/1/2007 1/1/2038 1412163 Entergy Services, Inc. (EMO) 194 1/1/2007 1/1/2038 1412164 Entergy Services, Inc. (EMO) 1157 1/1/2007 1/1/2038 1412165 Entergy Services, Inc. (EMO) 1219 1/1/2007 1/1/2038 1412166 Entergy Services, Inc. (EMO) 683 1/1/2007 1/1/2038 1412167 Entergy Services, Inc. (EMO) 140 1/1/2007 1/1/2038 1412168 Entergy Services, Inc. (EMO) 456 1/1/2007 1/1/2038 1412169 Entergy Services, Inc. (EMO) 739 1/1/2007 1/1/2038 1412170 Entergy Services, Inc. (EMO) 183 1/1/2007 1/1/2038 1412171 Entergy Services, Inc. (EMO) 64 1/1/2007 1/1/2038 1412172 Entergy Services, Inc. (EMO) 870 1/1/2007 1/1/2038 1412173 Entergy Services, Inc. (EMO) 129 1/1/2007 1/1/2038 1412174 Entergy Services, Inc. (EMO) 140 1/1/2007 1/1/2038 1412175 Entergy Services, Inc. (EMO) 130 1/1/2007 1/1/2038 1412176 Entergy Services, Inc. (EMO) 65 1/1/2007 1/1/2038 1412177 Entergy Services, Inc. (EMO) 947 1/1/2007 1/1/2038 1412178 Entergy Services, Inc. (EMO) 61 1/1/2007 1/1/2038 1412179 Entergy Services, Inc. (EMO) 304 1/1/2007 1/1/2038 1412180 Entergy Services, Inc. (EMO) 351 1/1/2007 1/1/2038 1412181 Entergy Services, Inc. (EMO) 692 1/1/2007 1/1/2038 1412182 Entergy Services, Inc. (EMO) 1641 1/1/2007 1/1/2038 1412183 Entergy Services, Inc. (EMO) 433 1/1/2007 1/1/2038 1412184 Entergy Services, Inc. (EMO) 1926 1/1/2007 1/1/2038 1412185 Entergy Services, Inc. (EMO) 946 1/1/2007 1/1/2038 1412186 Entergy Services, Inc. (EMO) 1233 1/1/2007 1/1/2038 1498278 Entergy Services, Inc. (EMO) 75 8/1/2007 1/1/2017 1498281 Entergy Services, Inc. (EMO) 86 8/1/2007 1/1/2017 1498283 Entergy Services, Inc. (EMO) 68 8/1/2007 1/1/2017 1498284 Entergy Services, Inc. (EMO) 78 8/1/2007 1/1/2017 1498285 Entergy Services, Inc. (EMO) 11 8/1/2007 1/1/2044 1498286 Entergy Services, Inc. (EMO) 69 8/1/2007 1/1/2044 1498287 Entergy Services, Inc. (EMO) 14 8/1/2007 1/1/2044



8. STUDY QUEUE OASIS PSE MW Begin End

1338849 Louisiana Energy & Power Authority 45 9/1/2005 9/1/2010

1413255 American Electric Power Service Corp 225 01/01/07 01/01/09

1460876 Aquila Networks – MPS 75 03/01/09 03/01/29




1460900 Louisiana Energy & Power Auth 116 01/01/09 01/01/30

1468113 Muni energy Agcy of Miss 20 06/01/11 06/01/41

1468285 Mid American Energy 103 09/01/07 09/01/08




1470484 City of W. Memphis 20 01/01/11 01/01/41

1471303 Cargill Power Markets, LLC 103 01/01/08 01/01/09

1475343 Constellation Energy 25 01/01/08 01/01/09

1477636 Westar Energy Generation & Mktg 27 06/01/10 06/01/40

1477639 Westar Energy Generation & Mktg 15 06/01/10 06/01/11

1478781 Entergy Services 804 01/01/08 01/01/58


1481111 City of Conway 50 02/01/11 02/01/46


1481235 Louisiana Energy and Power Authority 50 02/01/11 02/01/16

1481438 NRG Power Marketing 20 02/01/11 02/01/21





1483485 Entergy Services (EMO) 100 01/01/08 01/01/11

1483490 Entergy Services (EMO) 1 01/01/08 01/01/11


1495910 Southwestern Electric Cooperative 78 05/01/10 05/01/13





OASIS PSE MW Begin End

1498129 Conway Corporation 50 04/01/12 04/01/42

1498226 Carthage Water & Electric 4 04/01/12 04/01/42





9. ATTACHMENTS

A. Location Drawings

Description Page

Morrilton East – Gleason – Conway West Area A-1

Little Rock Area - North A-2

Little Rock Area - South A-3

Lynch SES Substation A-4

Cabot Area A-5

B. One Line Drawings

Description Page

Cabot Substation AXXXXSO5

Conway West Substation A3213SO5

Gleason Substation A3227SO5

LR Alexander Substation A3697SO1

LR Boyle Park Substation A3699SO1

LR Chicot Substation (3rd Auto Upgrade) A3701SO5

LR Mann Road Substation A3793SO1

LR Mann Road Substation (3rd Auto Upgrade) A3793SO5

LR Pinnacle Substation A2205SO5

LR Rock Creek Substation A3710SO5

LR South Substation A3711SO5

LR Walton Heights Substation A3712SO1

LR West Substation A3713SO5

Lynch Substation A2407SO5

Mabelvale Substation A2004SO5

Mabelvale Substation (3rd Auto Transformer) A2004SO5 -Prelim

Morrilton East Substation A3246SO5

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C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\Gleason\A3227SO5 - Preliminary.DWG, 1/23/2008 3:42:19 PM, sberry

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C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\LR Chicot\A3701SO5 - Preliminary.DWG, 1/23/2008 3:43:24 PM, sberry

C:\Documents and Settings\dcummi1\Desktop\Oasis\LR Mann Rd\A3793SO1.DWG, 1/16/2008 11:00:10 AM, dcummi1

C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\LR Mann\A3793SO5 - Preliminary.DWG, 1/22/2008 4:53:00 PM, sberry

C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\Pinnacle\A2205SO5 - Preliminary.DWG, 1/23/2008 3:49:16 PM, sberry

C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\LR Rock Creek 115kV Substation\A3710SO5 - Preliminary.DWG, 1/23/2008 3:44:38 PM, sberry

C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\LR South\A3711SO5 - Preliminary.DWG, 1/23/2008 3:45:36 PM, sberry

C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\LR West\A3713SO5 - Preliminary.DWG, 1/23/2008 3:46:32 PM, sberry

C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\Lynch\A2407SO5 - Preliminary.DWG, 1/21/2008 4:28:48 PM, sberry

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C:\Documents and Settings\dcummi1\Desktop\Oasis\Mabelvale\A2004SO5.DWG, 1/16/2008 11:34:28 AM, dcummi1

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C:\Substation Design\Project Files\Arkansas\2008\OASIS Request 1500580 1500581\Morilton East\A3246SO5 - Preliminary.DWG, 1/23/2008 3:48:29 PM, sberry