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Entergy Transmission Planning Summit

Entergy Louisiana, LLC Entergy New Orleans, Inc. Entergy Gulf States Louisiana, L.L.C. Entergy Texas, Inc. Entergy Arkansas, Inc. Entergy Mississippi, Inc. Draft 2011 – 2013 Construction Plan Projects Update 1. Entergy Transmission Planning Summit

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Entergy Transmission Planning Summit

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  1. Entergy Louisiana, LLCEntergy New Orleans, Inc.Entergy Gulf States Louisiana, L.L.C.Entergy Texas, Inc.Entergy Arkansas, Inc.Entergy Mississippi, Inc.Draft 2011 – 2013 Construction Plan Projects Update 1 Entergy Transmission Planning Summit New Orleans, Louisiana August 11, 2010

  2. 2011 – 2013 Draft Construction Plan Projects Update 1 • 113 listed CP projects which include: • 10 Autotransformer projects • 18 new transmission line projects • 41 line upgrade projects • 9 new substation projects • 23 capacitor bank additions • 16 substation expansion, reconfiguration or equipment addition/upgrade projects

  3. 2011 – 2013 Draft Construction Plan Projects Update 1 Horizon Projects • New section • Projects identified in the annual 10 year reliability assessment but are not included in the current three year construction plan window • CP projects and Horizon Projects combined is designed to represent Entergy’s long term (10 year) transmission reliability plan

  4. Entergy Arkansas, Inc. Transmission2011 – 2013 Draft ConstructionPlan Projects Update 1

  5. 2011-2013 EAI Draft Construction Plan Projects 1) Transmission Service (SMEPA): Upgrade Lines 2) Donaghey to Conway South: Upgrade Line 3) Beebe: Install Capacitor Bank 4) Melbourne to Sage: Upgrade Line 5) Warren East: Install Capacitor Bank 6) Parkin: Upgrade Line Trap 7) Transmission Service (OG&E): Upgrade Lines 8) Osage Creek to Grandview: New Line 9) Holland Bottoms (Phases 1&2): Construct 500/161/115 kV Substation 10) Ebony Phase 1: Install 5 Breaker Ring Bus 11) Transmission Service (Aquila): Upgrade Line 12) Jonesboro to Hergett: Upgrade Line 13) Poyen: Install Capacitor Bank 14) Benton North to Benton South: New Line 15) Transmission Service (Westar): Upgrade Lines 16)Mayflower: Reconfigure 500kV Bus 17) Fordyce: Install Line Switch 18) Holland Bottoms to Hamlet: New Line 8 15 1 4 12 15 6 7 10 7 18 16 3 2 9 9 14 13 1 11 17 5 2013 ISD 2014 ISD 2010 ISD 2011 ISD 2012 ISD

  6. Donaghey to Conway South: Upgrade Line& Hamlet: Install Breaker on Conway Industrial Line 10CP-EAI-006 Scenario: • Loss of the Helena Industrial to Ritchie SES 115 kV line segment causes low voltages at various substations • Loss of the Pleasant Hill to Quitman 161 kV line segment causes an overload on the Conway West to Donaghey and Donaghey to Conway South 161kV transmission line sections. The Conway West to Donaghey line has been upgraded. • The Pleasant Hill to 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 to Conway South • Install a breaker at Hamlet Switching Station to remove the overloads caused by the loss of Pleasant Hill to Quitman. This is an interim measure until a line can be constructed from Holland Bottoms to Hamlet in 2012. Proposed In Service Date: Complete

  7. Donaghey to Conway South: Upgrade Line& Hamlet: Install Breaker on Conway Industrial Line 10CP-EAI-006 Donaghey to Conway South: Upgrade Line Hamlet: Install Breaker on Conway Industrial Line Proposed In Service Date: Complete

  8. Transmission Service (SMEPA): Upgrade Lines 10CP-EAI-007 1-4 Scenario: • SMEPA transmission service Proposed Solution: • Upgrades required for transmission service: • Re-conductor Dell to AECC Manila 161 kV Transmission Line • Re-conductor AECC Manila to Monette 161 kV Transmission Line • Re-conductor Jonesboro North to Paragould South 161 kV Transmission Line • Re-Conductor Jonesboro to Jonesboro North 161 kV Transmission Line Proposed In Service Date: Complete

  9. Transmission Service (SMEPA): Upgrade Lines 10CP-EAI-007 1-4 Re-Conductor the 161 kV Transmission Line from Jonesboro North to Paragould South Re-Conductor the161 kV Transmission Line from AECC Manila to Monette Re-Conductor the 161 kV Transmission Line from Jonesboro to Jonesboro North Re-Conductor the161 kV Transmission Line from Dell to AECC Manila Proposed In Service Date: Complete

  10. Beebe: Install Capacitor Bank 10CP-EAI-008 Scenario: • The loss of the Cabot to Ward 115 kV 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 kV). Proposed Solution: • Install a 21.6 MVAR, 115 kV capacitor bank at Beebe Substation. Proposed In Service Date: Complete

  11. Beebe: Install Capacitor Bank 10CP-EAI-008 Beebe: Install 21.6 MVAR Capacitor Bank Proposed In Service Date: Complete

  12. Melbourne to Sage 161 kV: Upgrade Line 10CP-EAI-009 Scenario: • The following contingencies cause the Melbourne to Sage 161kV line segment to overload in the Winter 2010 Planning Models: • Loss of ANO to Fort Smith 500kV • Loss of ISES to Dell 500kV • Newport to Jonesboro 161kV Proposed Solution: • Re-conductor the Melbourne to Sage 161kV Transmission line segment to a minimum of 1200 Amps. Proposed In Service Date: Complete

  13. Melbourne to Sage 161 kV: Upgrade Line 10CP-EAI-009 Re-Conductor the 161 kV Transmission Line from Melbourne to Sage Proposed In Service Date:Complete

  14. Warren East: Install Capacitor Bank 10CP-EAI-010 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 results in low voltage. Also, voltages in this area drop during the loss of the 500/115 kV 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: Complete

  15. Warren East: Install Capacitor Bank 10CP-EAI-010 Warren East: Install 10.8 MVAR Capacitor Bank Proposed In Service Date: Complete

  16. Parkin: Upgrade Line Trap 10CP-EAI-011 Scenario: • The Marked Tree to Parkin 161 kV Transmission line overloads for the following contingencies: West Memphis EHV to West Memphis Lehi, West Memphis Lehi to Ebony SS and Ebony SS to Marion. The limit on the Parkin to Twist line is 112 MVA and the limit on the Twist to Marked Tree is 165 MVA. The limiting element on the Parkin to Twist line is a 400 Amp Line Trap. Proposed Solution: • Replace the 400 Amp line trap at Parkin with a line trap rated no less than 800 Amps. Proposed In Service Date: Summer 2010

  17. Parkin: Upgrade Line Trap 10CP-EAI-011 Parkin: Upgrade Line Trap Proposed In Service Date: Summer 2010

  18. Transmission Service (OG&E): Upgrade Lines 10CP-EAI-012 1-2 Scenario: • OG&E Transmission Service Proposed Solution: • ANO - Russellville North 161 kV: Line Upgrade (Complete) • Russellville East to Russellville S 161 kV: Line Upgrade (Complete) • ANO EHV Substation: Upgrade Switch (Complete) • Russellville North 161 kV Substation: Upgrade Switch (Complete) • Russellville East 161 kV Substation: Upgrade Switch (Complete) • Russellville South 161 kV Substation: Upgrade Switch (Complete) • Russellville East 161 kV Substation: Re-tap CT (Fall 2010) Proposed In Service Date: Summer 2010

  19. Transmission Service (OG&E): Upgrade Lines 10CP-EAI-012 1-2 Re-Conductor the 161 kV Transmission Line fromANO to Russellville North (Complete) Russellville East Re-tap CT (Fall 2010) Re-Conductor the 161 kV Transmission Line from Russellville East to Russellville South (Complete) Proposed In Service Date: Summer 2010

  20. Osage Creek to Grandview: New Line 10CP-EAI-013 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 to Harrison South transmission line segment results in a thermal overload of the Eureka to Osage Creek (AECC) line segment. • Loss of this line also results in low voltage at key load centers. Proposed Solution: • Construct a new switching station, Grandview, on the transmission line from Table Rock Dam to Eureka Springs. Build a new line between Grandview and Osage Creek. Proposed In Service Date: Summer 2011

  21. Osage Creek to Grandview: New Line 10CP-EAI-013 Grandview 161 kV Substation Grandview to Osage Creek 161 kV Line: Construct New Line Proposed In Service Date: Summer 2011

  22. Holland Bottoms: Construct 500/161/115 kV Substation 10CP-EAI-015 1-2 Scenario: • For the past two summers, several stations in Little Rock observed low voltages with no significant contingencies. • The loss of one of the 500/115 kV 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: • Phase 1: Construct a 500/115kV substation near Cabot Northeast of Little Rock. This will provide voltage support to Little Rock and reduce some thermal contingencies. • Phase2: Install 161 kV Bus and a 600 MVA 500 kV / 161 kV Autotransformer. This will provide a strong source into Conway from the East. The 161kV at Holland Bottoms will also provide a long term conversion of the 115kV to North Little Rock and to Searcy Price. Proposed In Service Date: 2011 (Phase 1), 2012 (Phase2)

  23. Holland Bottoms: Construct 500/161/115 kV Substation 10CP-EAI-015 1-2 Holland Bottoms 500/161/115 kV Substation Proposed In Service Date: 2011 (Phase 1), 2012 (Phase 2)

  24. Transmission Service (Aquila): Upgrade Lines 10CP-EAI-016 1-3 Scenario: • Aquila Transmission Service Proposed Solution: • Project definitions will be completed for the following Base Plan Projects: • Hot Springs EHV to Bismarck 161kV T-line upgrade • Bismarck to AECC Alpine 161 kV T-line Upgrade • AECC Alpine to Amity Tap 161 kV T-line Upgrade • Bismarck Substation Upgrades Proposed In Service Date: Winter 2011

  25. Transmission Service (Aquila): Upgrade Lines 10CP-EAI-016 1-3 Re-Conductor the 115 kV Transmission Line from Bismarck to AECC Alpine Re-Conductor the 115 kV Transmission Line fromHot Springs EHV to Bismarck Re-Conductor the 115 kV Transmission Line fromAECC Alpine to Amity SS Proposed In Service Date: Winter 2011

  26. Holland Bottoms - Hamlet: New Line 10CP-EAI-017 Scenario: • The loss of the 161 kV transmission line from Pleasant Hill to Quitman causes an overload on the Conway West to Donaghey and Donaghey to Conway South 161 kV transmission line sections. There are two key 161 kV transmission lines sensitive to daily and long term/firm transactions in the area north and northwest of Little Rock. 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). In the event the Pleasant Hill to Quitman line is outaged the Morrilton to Conway West to Quitman 161 kV line remains as the primary line to accomodate both the load in the Conway area and 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

  27. Holland Bottoms to Hamlet: New Line 10CP-EAI-017 Hamlet: Convert to a breaker station Construct a new 161 kV Transmission Line from Holland Bottoms to Hamlet Holland Bottoms Proposed In Service Date: 2012

  28. Ebony: Install a 5 Breaker Ring Bus 10CP-EAI-018 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

  29. Ebony: Install a 5 Breaker Ring Bus 10CP-EAI-018 Ebony SS: Convert to a 5 Breaker Ring Bus Proposed In Service Date: 2012

  30. Jonesboro to Hergett: Upgrade Line 10CP-EAI-019 Scenario: • The loss of Jonesboro to Jonesboro SPA causes the Jonesboro to Hergett 161 kV Transmission Line segment to overload. Also the loss of the Marked Tree to Harrisburg Tap 161 kV Transmission Line segment causes the Jonesboro to Hergett 161 kV Transmission Line segment to overload. Proposed Solution: • Re-conductor the Jonesboro to Hergett 161 kV Transmission line segment to at least 240 MVA. Proposed In Service Date: 2012

  31. Jonesboro to Hergett: Upgrade Line 10CP-EAI-019 Re-Conductor the 161 kV Transmission Line from Jonesboro to Hergett Proposed In Service Date: 2012

  32. Poyen: Install Capacitor Bank 11CP-EAI-001 Scenario: • The loss of the Hot Springs EHV to Malvern North 115kV Transmission line segment causes low voltages along line 968 at Gifford, Poyen, and Sheridan. Proposed Solution: • Install a 21.6 MVAR capacitor bank to the operating bus at the Poyen substation. Proposed In Service Date: 2012

  33. Poyen: Install Capacitor Bank 11CP-EAI-001 Poyen: Install 21.6 MVAR Cap Bank Proposed In Service Date: 2012

  34. Benton North to Benton South:New Line 10CP-EAI-020 Scenario: • The loss of Mabelvale to Bryant 115kV Transmission Line segment causes 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: Winter 2012

  35. Benton North to Benton South:New Line 10CP-EAI-020 Benton North SS: Convert to a breaker station Construct a new 115 kV Transmission Line from Benton North to Benton South Benton South SS: Convert to a breaker station Proposed In Service Date: Winter 2012

  36. Transmission Service (Westar): Upgrade Lines 10CP-EAI-022 1-2 Scenario: • Transmission Service Proposed Solution: • Re-conductor the Monette to Paragould 161 kV (Base Funding) Transmission line segment to at least 246 MVA. • Upgrade the switch B6673 at Paragould substation from 600 A to 2000 A • Russellville South 161 kV Substation – Upgrade Dardanelle Dam Line Terminal Equipment (Supplemental Funding) – Proposed upgrade to 416 MVA rating Proposed In Service Date: Summer 2012

  37. Transmission Service (Westar): Upgrade Lines 10CP-EAI-022 1-2 Upgrade Switch at Paragould Re-Conductor the 161 kV Transmission Line from Russellville South to Dardanelle Dam Re-Conductor the 161 kV Transmission Line from Paragould to Monette Proposed In Service Date: Summer 2012

  38. Mayflower:Reconfigure 500 kV Bus 11CP-EAI-002 Scenario: • Failure of breaker B8105 at Mayflower 500 kV substation will remove both 500/115 kV autotransformers #1 and #2 from service and overload autotransformer #3 124% in 2010, 112% in 2011 and 105% in 2012 and 108% in 2013. The reduction in contingency loading is due to Holland Bottoms phase 1 in 2011 and phase 2 in 2012. However, after 2012, the overloads will continue to increase as area load continues to grow. Proposed Solution: • Construct a new breaker position on the 500 kV bus at Mayflower between Switch B8114 and Breaker B8118 • Purchase and install a new 3000 amp, 500 kV Breaker and associated switches. • Move the Auto #2 high side node across Breaker B8118. Proposed In Service Date: 2013

  39. Mayflower:Reconfigure 500 kV Bus 11CP-EAI-002 Mayflower: Reconfigure 500kV Bus Proposed In Service Date: 2013

  40. Fordyce Capacitor Bank:Install Line Switch 11CP-EAI-003 Scenario: • In 2014, the loss of the 115 kV line from Fordyce to Camden North line causes a low voltage condition at Fordyce. There is a capacitor bank at Fordyce and it is installed on the line from Fordyce to Camden North on the Breaden line section. The line section from Fordyce to Bearden can be sectionalized but there are no switches such that the capacitor bank can be re-energized while the line section is out of service. Proposed Solution: • Install a 1200 amp line switch on the Fordyce to Bearden line section South of the capacitor bank at Fordyce. Proposed In Service Date: 2014

  41. Fordyce Capacitor Bank:Install Line Switch 11CP-EAI-003 Fordyce Cap Bank: Install Line Switch Proposed In Service Date: 2014

  42. Transmission Horizon Projects 2014 and Beyond 1) NLR Levy to NLR Dixie: Upgrade Line (2016) 2) Norfork to Calico Rock: Upgrade line (2016) 3) Calico Rock to Melbourne: Upgrade Line (2015) 4) Holland Bottoms to Jacksonville North: Upgrade Line (2016) 5) Ebony SS (Phase 2):Install 21.6 MVAR Cap Bank (2016) 6) Hot Spring Hamilton to Bismarck: New Line (2016) 7) Jim Hill to Datto: Convert 115 kV Line to 161 kV Or Construct a New 161 kV Line (2016) 8) White bluff: Reconfigure 500 kV Station (2016) 9) Lake Village Bagby to Reed: Upgrade Line (2016) 10) Mayflower to Morgan: Upgrade Line (2019) 11) Pine Bluff Voltage Support: Phase 2 (2016) 12) Camden North to Camden McGuire: New Line (2016) 13) Woodward: Reconfigure 115kV Bus (2016) 14) Woodward to Pine Bluff West to Pine Bluff McAlmont: Upgrade Line (2016) 15) Rutherford: Relocate Cap Bank to Pangburn(2016) 7 2 3 15 5 10 4 1 8 6 13 14 11 12 9

  43. Transmission Horizon Projects 2014 and Beyond 16) NLR Westgate to NLR Levy: Upgrade Line (2016) 17) ISES: Reconfigure 161 kV Bus (2016) 18) AECC Hydro Station #2 to Gillett: New Line (2016) 19) Monticello East to Reed: New Line (2016) 20) Truman to Truman West: Upgrade Line (2019) 21) Moses to Forrest City North: Upgrade Line (2019) 22) Highland: Install Capacitor Bank (2019) 22 20 17 20 21 16 18 19

  44. Entergy Mississippi, Inc. Transmission2011 – 2013 Draft ConstructionPlan Projects Update 1

  45. 2011-2013 EMI Draft Construction Plan Projects Update 1 • TVA Affected System Upgrades: Morton: Upgrade Switches Upgrade S.Jackson to Florence 115kV • Magee: Upgrade Switches for SMEPA Transformers • Grand Gulf Uprate Project: Upgrade Baxter Wilson to Ray Braswell 500kV • Indianola to Greenwood 115kV: Upgrade line • Florence to Star 115kV: Upgrade Line • Grand Gulf Uprate: Add Capacitor Banks • Waterways to E. Vicksburg 115 kV: Upgrade Line • McAdams Area: Add 2nd McAdams 500-230kV Auto. Upgrade McAdams toPickens 230 kV 6 • Ridgeland/Madison Area Improvements: Rebuild Lakeover to Ridgeland Line and build Lakeover to Sunnybrook to Northpark Line • Ouachita Transmission Service: Add 2nd Baxter Wilson 500-115 kV Auto • Grenada/Winona/Greenwood Phase II: New Tillatoba to South Grenada 230 kV line and South Grenada add auto • Brookhaven to McComb 115kV: Upgrade Line • Franklin 500kV: Reconfigure Ring Bus • Ray Braswell to Wyndale: Construct 115 kV Line and SS • Church Road to Getwell: Construct 230 kV Line • Rankin Industrial to Airport 115kV: Upgrade Line 6 15 11 4 6 6 8 6 9 9 6 1 7 3 16 10 14 1 5 6 2 13 6 12 6 2010 ISD 2011 ISD 2012 ISD 2013 ISD 2014 ISD

  46. Indianola to Greenwood 115 kV Line Upgrade (10CP-EMI-002) Scenario: • The Indianola to Greenwood 115kV 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 115kV 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: Complete

  47. Indianola to Greenwood 115 kV Line Upgrade (10CP-EMI-002) Greenwood 115 kV Substation: Upgrade Substation Equipment Itta Bena 115 kV Substation: Upgrade Substation Equipment Moorhead 115 kV Substation: Upgrade Substation Equipment Proposed In Service Date: Complete

  48. Upgrade Switches at Magee Substation (10CP-EMI-003) Scenario: • Entergy and SMEPA have a tie at Magee substation through two 161-115 kV, 150 MVA transformers. • SMEPA has replaced the transformers with 336 MVA transformers to increase the contract path with Entergy. The switches on the 115 kV 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: Summer 2010

  49. Upgrade Switches at Magee Substation (10CP-EMI-003) Magee 115 kV Substation: Upgrade Substation Equipment Proposed In Service Date: Summer 2010

  50. Upgrade Florence to South Jackson Line & Switches at Morton Substation (10CP-EMI-004-1-2) 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 to South Jackson, Morton to Pelahatchie and Morton to West Forest (SOCO) 115 kV lines overloads for the loss of Choctaw to WestPoint (TVA) 500 kV line. Recommended Solution: • Re-conductor Florence to 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 to Pelahatchie and Morton to West Forest (SOCO) 115 kV line sections. Proposed In Service Date: Complete

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