Entergy Arkansas Inc Proposed Transmission Projects Entergy Transmission

Entergy Arkansas, Inc. Proposed Transmission Projects Entergy Transmission Planning Summit New Orleans, LA August 11, 2009 1

2009 EAI Transmission Projects 1) Gillette: Install 10. 8 MVAR Capacitor Bank 2) Donaghey to Conway South: Upgrade Line 3) Hamlet: Install Breaker on Conway Industrial Line 2, 3 4 4) Danville: Upgrade Terminal Equipment 1 2

2010 -2012 EAI Transmission Projects 1 1) Osage Creek – Grandview: New Line 7 6 2) Transmission Service - OG&E 6) Transmission Service – SMEPA 2 3) Holland Bottoms: Construct 500/161/115 k. V Substation 4) Transmission Service - Aquila 5) Warren East: Install 10. 8 MVAR Capacitor Bank 3 4 5 3 7) Melbourne to Sage 161 k. V: Upgrade Line

2010 -2012 EAI Transmission Projects 1) Harrison to Everton Road: Replace Switches and Line Trap 1 3 2) Transmission Service – Westar 5 6 3) Jonesboro to Hergett: Upgrade 161 k. V Line 4) Ebony Switching Station: Convert to a Breaker Station 7 2 4 6) Holland Bottoms to Hamlet: Construct New 161 k. V Line 7) Benton North to Benton South: Construct New 115 k. V Line 8) Mt Ida: Install 10. 8 MVAR Capacitor Bank 8 5) Beebe: Install 21. 6 MVAR Capacitor Bank 9) Sarepta: Emerson Install a 10. 8 MVAR Capacitor Bank 9 4

Gillette: Install 10. 8 MVAR Capacitor Bank Scenario: • Loss of the Helena Industrial - Ritchie SES 115 k. V line segment causes low voltages at various substations • Loss of the Stuttgart Ricusky 230/115 k. V autotransformer causes low voltages at various substations and overloads on the Woodward – Altheimer and the Altheimer – Wabbaseka 115 k. V line segments Proposed Solution: • Install a 10. 8 MVAR capacitor bank at Gillette. • Correct Distribution power factor at Dewitt, Almyra, Marvell, Gillett, Helena Central, and Ulm substations. Proposed In Service Date: Summer 2009 5

Gillette: Install 10. 8 MVAR Capacitor Bank 6

Donaghey to Conway South: Upgrade Line & Hamlet: Install Breaker on Conway Industrial Line Scenario: • Loss of the Helena Industrial - Ritchie SES 115 k. V line segment causes low voltages at various substations • Loss of the Pleasant Hill - Quitman 161 k. V line segment causes an overload on the Conway West to Donaghey and Donaghey to Conway South 161 k. V transmission line sections. The Conway West - Donaghey line has been upgraded. • The Pleasant Hill – Quitman line and the Morrilton East to Quitman line are subjected to unanticipated transactions which tend to overload the Morrilton East to Quitman line for the loss of the Pleasant Hill to Quitman line. Proposed Solution: • Re-conductor Donaghey – Conway South • Install a breaker at Hamlet Switching Station to remove the overloads caused by the loss of Pleasant Hill – Quitman. This is an interim measure until a line can be constructed from Holland Bottoms to Hamlet in 2012. Proposed In Service Date: Winter 2009 7

Donaghey to Conway South: Upgrade Line & Hamlet: Install Breaker on Conway Industrial Line Donaghey to Conway South: Upgrade Line Hamlet: Install Breaker on Conway Industrial Line 8

Danville: Upgrade Terminal Equipment Scenario: • Loss of ANO - Fort Smith 500 k. V Transmission line causes overloads on the Danville-Magazine, and Magazine-North Magazine line sections. • The loss of the 500 k. V line causes the flow to utilize the underlying network to transfer power to the neighboring utilities. Proposed Solution: • Upgrade Danville bus section, switches and line trap. • Danville to North Magazine re-conductor. This has been completed. Proposed In Service Date: Fall 2009 9

Danville: Upgrade Terminal Equipment Danville: Upgrade Substation Equipment 10

Osage Creek – Grandview: New Line Scenario: • By 2010 it is estimated that approximately 227 MW of load will be served between Harrison East and Eureka Springs. • Loss of the Harrison East – Harrison South transmission line segment causes thermal overloads by as much as 7% on the Eureka – Osage Creek (AECC) line segment. • Loss of this line also causes depressed voltage at key load centers. Proposed Solution: • Construct a new switching station, Grandview, on the transmission line from Table Rock Dam – Eureka Springs. Build a new line between Grandview and Osage Creek. Proposed In Service Date: 2011 11

Osage Creek – Grandview: New Line Grandview 161 k. V Substation Grandview – Osage Creek 161 k. V Line: Construct New Line 12

Supplemental Upgrades - OG&E Scenario: • Supplemental upgrades for OG&E Proposed Solution: • ANO - Russellville N 161 k. V: Line Upgrade • Russellville E - Russellville S 161 k. V: Line Upgrade • ANO EHV Substation: Upgrade Switch • Russellville N 161 k. V Substation: Upgrade Switch • Russellville E 161 k. V Substation: Upgrade Switch • Russellville S 161 k. V Substation: Upgrade Switch Proposed In Service Date: Winter 2010 13

Supplemental Upgrades - OG&E Re-Conductor the 161 k. V Transmission Line from ANO to Russellville North Re-Conductor the 161 k. V Transmission Line from Russellville East to Russellville South 14

Holland Bottoms: Construct 500/161/115 k. V Substation Scenario: • For the past two summers, several stations in Little Rock observed voltages as low as 91% of nominal with no significant contingencies. • The loss of one of the 500/115 k. V transformers at Mabelvale in 2006 resulted in low voltages in the Little Rock area during periods where heavy flows to the north were occurring. • A loss of the second transformer at Mabelvale (N-2) could result in widespread low voltage in the Little Rock area. Proposed Solution: • Construct a 500/115 k. V substation near Cabot Northeast of Little Rock. This will provide voltage support to Little Rock and reduce some thermal contingencies. Proposed In Service Date: 2011 15

Holland Bottoms: Construct 500/161/115 k. V Substation Holland Bottoms 500/161/115 k. V Substation 16

Transmission Service - Aquila Scenario: • Aquila Transmission Service (Base Funded) Proposed Solution: • • • Project definitions will be completed for the following Base Plan Projects: Hot Springs EHV to Bismarck 161 k. V T-line upgrade Bismarck to AECC Alpine 161 k. V T-line Upgrade AECC Alpine to Amity Tap 161 k. V T-line Upgrade Bismarck Substation Upgrades Proposed In Service Date: 2011 17

Transmission Service - Aquila Re-Conductor the 115 k. V Transmission Line from Bismarck to AECC Alpine Re-Conductor the 115 k. V Transmission Line from Hot Springs EHV to Bismarck Re-Conductor the 115 k. V Transmission Line from AECC Alpine to Amity SS 18

Warren East: Install 10. 8 MVAR Capacitor Bank Scenario: • The Warren East is a substation which is located in southeastern Arkansas, northeast of El Dorado. This is a long radial line fed from Monticello East and El Dorado EHV which is approximately 61 miles. Loss of any of the line segment along this line causes voltages to dip below 90%. Also, voltages in this area drop during the loss of the 500/115 k. V at El Dorado EHV. Proposed Solution: • Install a 10. 8 MVAR capacitor bank to the operating bus at the Warren East substation. Proposed In Service Date: 2012 19

Warren East: Install 10. 8 MVAR Capacitor Bank 20

Transmission Service - SMEPA Scenario: • SMEPA transmission service (Base Funded). Proposed Solution: • Upgrades required for transmission service: – Re-conductor Dell to AECC Manila 161 k. V Transmission Line – Re-conductor AECC Manila to Monette 161 k. V Transmission Line – Re-conductor Jonesboro North to Paragould South 161 k. V Transmission Line – Re-Conductor Jonesboro to Jonesboro North 161 k. V Transmission Line Proposed In Service Date: Summer 2010 21

Transmission Service - SMEPA Re-Conductor the 161 k. V Transmission Line from Jonesboro North to Paragould South Re-Conductor the 161 k. V Transmission Line from AECC Manila to Monette Re-Conductor the 161 k. V Transmission Line from Jonesboro to Jonesboro North 22 Re-Conductor the 161 k. V Transmission Line from Dell to AECC Manila

Melbourne to Sage 161 k. V: Upgrade Line Scenario: • • The following contingencies cause the Melbourne to Sage 161 k. V line segment to overload in the Winter 2010 Planning Models: Loss of ANO to Fort Smith 500 k. V Loss of ISES to Dell 500 k. V Newport to Jonesboro 161 k. V Proposed Solution: • Re-conductor the Melbourne to Sage 161 k. V Transmission line segment to a minimum of 1200 Amps. Proposed In Service Date: Winter 2010 23

Melbourne to Sage 161 k. V: Upgrade Line Re-Conductor the 161 k. V Transmission Line from Melbourne to Sage 24

Harrison East to Everton Road: Replace Switches and Line Trap Scenario: • Harrison East to Hilltop has a limited of 167 MVA due to breaker B 4836 switches at Harrison East and the line trap at Harrison East. The switches are currently rated at 600 Amps and the line trap is rated for 600 Amps. BY upgrading the switches and line trap the line rating will increase from 167 MVA to 223 MVA. Proposed Solution: • • Install 2 sets of switches at Harrison East on breaker B 4836. The new switches need to be rated no less than 1200 Amps. Install a new line trap at Harrison East with a rating no less than 1200 Amps. Proposed In Service Date: 2011 25

Harrison to Everton Road: Replace Switches and Line Trap Harrison East: Replace switches and line trap on the Everton Road 161 k. V Transmission Line 26

Transmission Service - Westar Scenario: • Transmission Service Proposed Solution: • • • Re-conductor the Monette to Paragould 161 k. V (Base Funding) Transmission line segment to at least 246 MVA. Upgrade the switch B 6673 at Paragould substation from 600 A to 2000 A Russellville South 161 k. V Substation – Upgrade Dardanelle Dam Line Terminal Equipment (Supplemental Funding) – Proposed upgrade to 416 MVA rating Proposed In Service Date: 2012 27

Transmission Service - Westar Re-Conductor the 161 k. V Transmission Line from Paragould to Monette Upgrade Switch B 6673 Re-Conductor the 161 k. V Transmission Line from Russellville South to Dardanelle Dam 28

Jonesboro to Hergett: Upgrade 161 k. V Line Scenario: • The loss of Jonesboro to Jonesboro SPA causes the Jonesboro to Hergett 161 k. V Transmission Line segment to overload. Also the loss of the Marked Tree to Harrisburg Tap 161 k. V Transmission Line segment causes the Jonesboro to Hergett 161 k. V Transmission Line segment to overload. Proposed Solution: • Re-conductor the Jonesboro to Hergett 161 k. V Transmission line segment to at least 240 MVA. Proposed In Service Date: 2012 29

Jonesboro to Hergett: Upgrade 161 k. V Line Re-Conductor the 161 k. V Transmission Line from Jonesboro to Hergett 30

Ebony Switching Station: Convert to a Breaker Station Scenario: • The loss of West Memphis EHV to West Memphis Polk causes low voltages at WM Polk and WM Lehi. To prevent this, Ebony SS will be converted to a breaker station. • Ebony SS ties together Kuhn Road, WM Gateway, Marked Tree, WM Lehi and WM Polk. The current configuration has Marked Tree to WM Lehi bypassing the switching station. This also prevents a creation of an operational guide for the TOC to remove the low voltages condition if an event should occur. Proposed Solution: • Convert Ebony SS to a 5 breaker station (Single Bus Single Breaker Scheme). Additional land may need to be purchased. Proposed In Service Date: 2012 31

Ebony Switching Station: Convert to a Breaker Station Ebony SS: Convert Ebony SS to a Ring Bus 32

Beebe: Install 21. 6 MVAR Capacitor Bank Scenario: • The loss of the Cabot to Ward 115 k. V Transmission line segment causes low voltages along line 937. Line 937 breaker to breaker is from Jacksonville North to Searcy Price. Since there is a capacitor bank at Cabot, the loss of Jacksonville to Cabot is not as severe. The Cabot capacitor bank is 32. 4 MVAR (30. 53 MVAR at 115 k. V). Proposed Solution: • Install a 21. 6 MVAR, 115 k. V capacitor bank at Beebe Substation. Proposed In Service Date: Winter 2010 33

Beebe: Install 21. 6 MVAR Capacitor Bank 34

Holland Bottoms - Hamlet: Construct New 161 k. V Line Scenario: • The loss of the 161 k. V transmission line from Pleasant Hill to Quitman causes an overload on the Conway West to Donaghey and Donaghey to Conway South 161 k. V transmission line sections. There are two 161 k. V transmission lines that push power to North/Northwest Arkansas due to daily and long term/firm transactions. One of the lines runs through the City of Conway (Morrilton East to Quitman) and the other is north of Conway (Pleasant Hill to Quitman). When the Pleasant Hill to Quitman line trips the Morrilton to Conway West to Quitman line now has to handle not only the load in the Conway area but the transactions flowing North. Proposed Solution: • • Convert Hamlet SS to a breaker station (Single Bus Single Breaker Scheme) Move the Quitman line from Gold Creek to Hamlet SS Move the Gravel Ridge line from Gold Creek to Hamlet SS Construct a line from Hamlet SS to Holland Bottoms with a rating no less than 1200 Amps Proposed In Service Date: 2012 35

Holland Bottoms to Hamlet: Construct New 161 k. V Line Hamlet: Convert to a breaker station Construct a new 161 k. V Transmission Line from Holland Bottoms to Hamlet Holland Bottoms 36

Benton North - Benton South: Construct New 115 k. V Line Scenario: • The loss of Mabelvale to Bryant 115 k. V Transmission Line segment causes on overload on the Hot Springs EHV to Butterfield line section and low voltages at Benton South, Bryant and Alcoa Road substations. Proposed Solution: • • Convert Benton South SS to a breaker stations (Single Bus Single Breaker Scheme) Convert Benton North SS to a breaker stations (Single Bus Single Breaker Scheme) Construct a line from Benton South to Benton North The new line needs to be rated to at least 170 MVA Proposed In Service Date: 2012 37

Benton North to Benton South: Construct New 115 k. V Line Benton North SS: Convert to a breaker station Construct a new 115 k. V Transmission Line from Benton North to Benton South SS: Convert to a breaker station 38

Mt Ida: Install 10. 8 MVAR Capacitor Bank Scenario: • The loss of Hot Springs to Bismarck 115 k. V Transmission line segment causes low voltages along the Hot Springs EHV to Murfreesboro 115 k. V Transmission Line. The source from the South, SWEPCO's area, is not strong enough to support the load on this line. Proposed Solution: • Install a 10. 8 MVAR Capacitor Bank at Mt Ida Substation. Proposed In Service Date: 2011 39

Mt Ida: Install 10. 8 MVAR Capacitor Bank 40

Sarepta: Emerson Install a 10. 8 MVAR Capacitor Bank Scenario: • With the forecasted 2008 summer peak load model, a single contingency analysis was performed in the ELL-North-West area with and without the potential load additional of 28 MW at the new substation close to Arcadia. Proposed Solution: • • Install a a 345/115 k. V Auto at the Serepta 115 k. V substation 10. 8 MVAR capacitor bank at Emerson 32. 4 MVAR cap bank at Lucky 32. 4 MVAR cap bank at Vienna Proposed In Service Date: 2011 41

Sarepta: Emerson Install a 10. 8 MVAR Capacitor Bank Emerson: Install 10. 8 MVAR Capacitor Bank 42

Transmission System Target Areas 2013 and Beyond 1) Little Rock Re-Conductor 115 k. V Transmission Lines 7 3 2 2) Norfork – Sage: Upgrade 161 k. V Line 8 11 10 5) Gum Springs to Amity: Construct 115 k. V Line 6) Holland Bottoms to Ward: Construct 2 nd 115 k. V Line 7) Jim Hill to Datto: Convert 115 k. V Line to 161 k. V Or Construct a New 161 k. V Line 8) Jonesboro: Construct a 500/161 k. V Substation 12) Camden North to Camden Mc. Guire: Construct a 115 k. V Line 6 1 13 5 10) Mayflower to Morgan: Upgrade 115 k. V Line 11) Russellville East to Russellville North: Upgrade 161 k. V Line 3) Bull Shoals to Midway: Upgrade 161 k. V Line 4) Gum Springs: Construct Switching Station 9) Lake Village Bagby to Macon Lake: Upgrade 115 k. V Line 15 4 12 9 13) Poyen: Install a 10. 8 MVAR Capacitor Bank 14) El Dorado Upland to Texas Eastern F: Construct 115 k. V Line 15) Gobel: Construct 230/115 k. V Substation 14 43

Entergy Mississippi, Inc. Proposed Transmission Reliability Projects Transmission Planning Summit 44

2010 - 2012 EMI Transmission Reliability Projects Horn Lake: Energize Auto & Upgrade Horn Lake – TH Allen 161 k. V Line 2011 Getwell 230/115 k. V Auto & Getwell-Hernando 230 k. V Line (Operate at 115 k. V) 2013 Grenada/Winona/Greenwood Area Improvement 2010 & 2012 Mc. Adams 500/230 k. V Auto & Upgrade Mc. Adams-Pickens 230 k. V Line 2011 Indianola-Greenwood 115 k. V 2010 Ray Braswell - Byram 115 k. V Line 2013 Ridgeland - Madison Reliability Improvement 2011 -12 Install 500/115 k. V Auto at Baxter Wilson 2012 South Jackson – Florence 115 k. V Line Upgrade & Switches at Morton 2010 Waterways – E. Vicksburg 115 k. V Line Upgrade 2011 Florence - Star 115 k. V Line Upgrade 2011 Upgrade Breakers and Switches at Baxter Wilson and Ray Braswell 2010 Upgrade Switches at Magee 2010 45

Indianola-Greenwood Line Upgrade Scenario: • The Indianola - Greenwood 115 KV line, located in central Mississippi, is approximately 28 miles long and is limited to a rating of 120 MVA by equipment in the Moorhead, Itta Bena, and Greenwood substations. • Loss of several sections including Pickens-Durant, Durant-Bowling Green, Attala-Kosciusko and Delta-Ruleville causes the Indianola-Moorhead section to overload. Recommended Solution: • Replace the limiting substation equipment and increase the rating of the line to 161 MVA. Proposed In Service Date: Winter 2010 46

Indianola-Greenwood Line Upgrade Greenwood 115 k. V Substation: Upgrade Substation Equipment Itta Bena 115 k. V Substation: Upgrade Substation Equipment Moorhead 115 k. V Substation: Upgrade Substation Equipment 47

Upgrade Switches at Magee Substation Scenario: • Entergy and SMEPA have a tie at Magee substation through two 161/115 k. V, 150 MVA transformers. • SMEPA has replaced the transformers with 336 MVA transformers to increase the contract path with Entergy. The switches on the 115 k. V side limits the new contract path limit to 480 MVA. Recommended Solution: • Replace the existing switches to increase the tie capability to full value (672 MVA) of the new transformers. Proposed In Service Date: Winter 2010 48

Upgrade Switches at Magee Substation Magee 115 k. V Substation: Upgrade Substation Equipment 49

Upgrade Florence-South Jackson Line & Switches at Morton Substation Scenario: • TVA requested transmission service across Entergy’s transmission system from TVA to TVA. The transfer causes various lines to overload for a single contingency. • Florence-South Jackson, Morton-Pelahatchie and Morton-West Forest (SOCO) 115 k. V lines overloads for the loss of Choctaw-West. Point (TVA) 500 k. V line. Recommended Solution: • Re-conductor Florence-South Jackson line and increase the rating of the line to at least 183 MVA. • Upgrade switches at Morton substation (from 600 Amps to 1200 Amps) to increase the rating of Morton-Pelahatchie and Morton-West Forest (SOCO) lines to 176 MVA and 154 MVA respectively. Proposed In Service Date: Summer 2010 50

Upgrade Florence-South Jackson Line & Switches at Morton Substation Morton 115 k. V Substation: Upgrade Substation Equipment Florence – South Jackson 115 k. V Line: Upgrade Line 51

Baxter Wilson-Ray Braswell 500 k. V Line Equipment Upgrade Scenario: • The Baxter Wilson to Ray Braswell 500 k. V line overloads for the loss of the Franklin-Grand Gulf 500 k. V transmission line. Recommended Solution: • The breakers and switches at Baxter Wilson and Ray Braswell 500 k. V substations must be upgraded to at least 3000 A. This upgrade increases the line capacity to 2884 MVA. Proposed In Service Date: Summer 2010 52

Baxter Wilson-Ray Braswell 500 k. V Line Equipment Upgrade Baxter Wilson 500 k. V Substation: Upgrade Substation Equipment Ray Braswell 500 k. V Substation: Upgrade Substation Equipment 53

Grenada/Winona/Greenwood Area Improvement Scenario: • The Greenwood, Winona, and Grenada area is supplied by five 115 k. V lines and will serve 390 MW in 2009. • The loss of one of these five 115 k. V lines or the loss of the Tillatoba 230/115 k. V auto will cause various bus undervoltages and overloads on 2 115 k. V lines. Recommended Solution: • Phase I: Install a capacitor bank at Schlater (21 MVAR), an additional bank at Winona (21 MVAR) and upgrade the bank at Greenwood (32 MVAR). Proposed In Service Date: Winter 2010 • Phase II: Build a 230 k. V line from Tillatoba to S. Grenada with 1, 272 ACSR (or equivalent conductor) and install a 230/115 k. V autotransformer at S. Grenada. Proposed In Service Date: 2012 54

Grenada/Winona/Greenwood Area Improvement South Grenada 115 k. V Substation: Install 230 – 115 k. V Autotransformer Tillatoba – South Grenada 230 k. V Line: Construct New Line Schlater 115 k. V Substation: Install Capacitor Bank Greenwood 115 k. V Substation: Upgrade Capacitor Bank 55 Winona 115 k. V Substation: Install Capacitor Bank

Florence-Star 115 k. V Line Upgrade Scenario: • The Florence – Star 115 k. V line, located in central Mississippi, is approximately 7 miles long and is limited to a rating of 161 MVA. • The loss of the Franklin – Bogalusa EHV line will cause the line to overload. Recommended Solution: • Re-conductor the Florence-Star line and increase the rating of the line to 240 MVA. Proposed In Service Date: 2011 56

Florence-Star 115 k. V Line Upgrade Florence – Florence SS - Star 115 k. V Line: Upgrade Line 57

Horn Lake: Energize 230/161 k. V Autotransformer & Upgrade Horn Lake – Allen (TVA) 161 k. V Line Scenario: • The Southaven and Senatobia areas, served by one 230 k. V line and two 115 k. V lines, will total approximately 406 MW in 2009. • The single contingency loss of the Freeport – Horn Lake 230 k. V line will cause low voltages at 9 substations. Recommended Solution: • Reconductor the Horn Lake – TH Allen (TVA) 161 k. V line to a rating of at least 390 MVA and energize the idle 230/161 k. V autotransformer at Horn Lake. Proposed In Service Date: 2011 58

Horn Lake 230/161 k. V Auto & Allen Line Upgrade Horn Lake 230 k. V Substation: Energize 230 – 161 k. V Autotransformer Horn Lake – TH Allen 161 k. V Line: Upgrade Line 59

Reconductor Waterways-East Vicksburg 115 k. V Line Scenario: • Vicksburg-Ray Braswell 115 k. V line is 27 miles long and serves about 114 MW load in 2011. • The Waterways - East Vicksburg 115 k. V segment overloads for the loss of Baxter Wilson-Ray Braswell 500 k. V line. Recommended Solution: • Reconductor the Waterways - East Vicksburg 115 k. V segment to match the rating of Vicksburg-Waterways (240 MVA) section. Proposed In Service Date: 2011 60

Reconductor Waterways-East Vicksburg 115 k. V Line East Vicksburg – Waterways 115 k. V Line: Upgrade Line 61

Ridgeland-Madison Reliability Improvement Scenario: • The Lakeover -NE Jackson - Rex Brown 115 k. V line is 25 miles long and will serve 6 substations totaling 194 MW in 2009. A new substation, Sunnybrook will be fed from this line (2011) which will add to the existing line loading. • The loss of the Rex Brown - Hico, Hico - N. Jackson 115 k. V lines in 2009 causes overloads on the Lakeover - Livingston Rd 115 k. V line. The loss of the Lakeover Livingston Rd or Livingston Rd - Ridgeland 115 k. V lines causes the Rex Brown - Hico - N. Jackson 115 k. V lines to overload. Recommended Solution: • Build a 115 k. V substation in the existing Northpark 230 k. V substation and cut in the Lakeover-NE Jackson line at Northpark (between Ridgeland Country Club). Connect the new circuit to the new 115 k. V bus at the Northpark substation. This new circuit will be used for the feed to the new Sunnybrook substation. Double-Circuit the existing Lakeover–Livingston–Ridgeland 115 k. V line, upgrading the existing line to at least 231 MVA. Proposed In Service Date: 2011/2012 62

Ridgeland-Madison Reliability Improvement Sunnybrook Northpark 115 Laveover – Livingston Road 115 k. V Line: Upgrade Line Laveover – Sunnybrook Northpark 115 k. V Line: Construct New Line 63

Install 2 nd 500/230 k. V Autotransformer at Mc. Adams & Upgrade Mc. Adams-Pickens 230 k. V Line Scenario: • The 500/230 k. V autotransformer at Mc. Adams overloads for the loss of Mc. Adams - Lakeover 500 k. V line. • The Mc. Adams - Pickens 230 k. V line, which supports the Canton/Madison area, overloads when a 2 nd 500/230 k. V autotransformer is added to eliminate the overload of the existing transformer. Recommended Solution: • Add 2 nd 500/230 k. V auto at Mc. Adams substation. Upgrade Mc. Adams Pickens 230 k. V line with double bundled 954 ACSR (or equivalent) to a capacity of at least 880 MVA. Proposed In Service Date: 2011 64

Install 2 nd 500/230 k. V Autotransformer at Mc. Adams & Upgrade Mc. Adams-Pickens 230 k. V Line Mc. Adams 500 k. V Substation: Install Second 500 – 230 k. V Autotransformer Mc. Adams – Pickens 230 k. V Line: Upgrade Line 65

Add 2 nd 500/115 k. V Autotransformer at Baxter Wilson Scenario: • This is a part of the reliability project that is required to add the Ouachita generating facility (Transmission Service Request) to Entergy’s transmission network. • The existing 500/115 k. V autotransformer at Sterlington will be moved and installed at Baxter Wilson substation. Proposed In Service Date: 2012 66

Add 2 nd 500/115 k. V Autotransformer at Baxter Wilson 500 k. V Substation: Install Second 500 – 115 k. V Autotransformer 67

Ray Braswell - Byram 115 k. V Line Construction Scenario: • The SW Jackson to Byram to Brookhaven line is 53 miles long and serves 162 MW of load. • The loss of the SW Jackson to Elton or Elton to Byram 115 k. V lines will cause overloads on three line sections from Brookhaven to Hazlehurst 115 k. V and undervoltages on various buses in 2009. • In addition, the loss of Brookhaven - Wesson or Wesson - James Rd. will cause overloads on two line sections from SW Jackson to Byram. Recommended Solution: • Build a new 115 k. V line from Ray Braswell through Wyndale (future substation) to Byram 115 k. V substation with a rating of at least 261 MVA. Proposed In Service Date: 2013 68

Ray Braswell – Byram 115 k. V Line Construction Ray Braswell – Byram 115 k. V Line: Construct New Line (230 k. V Construction) 69

Add 2 nd 230/115 k. V Autotransformer at Getwell & Getwell-Hernando 230 k. V Line Construction Scenario: • The Hornlake-Hernando area in Northwest Mississippi is experiencing a high annual growth rate. The Getwell-Batesville 115 k. V line will serve about 124 MW of load in 2013 and Getwell-Hornlake 115 k. V serves about 145 MW. • Loss of Getwell-Hernando 115 k. V section overloads the Batesville-Sardis 115 k. V section. Low voltages are also projected at Hernando, Coldwater and Senatobia substations. Loss of 230/115 k. V auto at Getwell overloads the Hornlake-Greenbrook segment. Recommended Solution: • Construct a new line from Getwell-Hernando with 230 k. V specifications (operating at 115 k. V) with a minimum rating of 240 MVA. • Install a second 230/115 k. V autotransformer at Getwell. Proposed In Service Date: 2013 70

Add 2 nd 230/115 k. V Autotransformer at Getwell & Getwell-Hernando 230 k. V Line Construction Getwell 230 k. V Substation: Add Second 230 – 115 k. V Autotransformer Getwell – Hernando 115 k. V Line: Construct New Line (230 k. V Construction) 71

EMI Transmission System Target Areas 2014 and Beyond Southhaven Area North Mississippi Improvement Plan Church Rd-Getwell 230 k. V Line Continue Getwell-Batesville 230 k. V line Breakers at Hollandale and Belzoni Rankin-Ind. – Airport 115 k. V Lakeover-Canton 230 k. V line 72