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Entergy Louisiana, LLC (North) 2010 to 2012 Draft Construction Plan

Entergy Louisiana, LLC (North) 2010 to 2012 Draft Construction Plan. Entergy Transmission Planning Summit New Orleans, LA August 11, 2009. 2010 to 2012 ELL-North Transmission Draft Construction Plan. Ouachita Transmission Service (Proposed ISD 2012). Delhi: Install 115 kV Reactor

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Entergy Louisiana, LLC (North) 2010 to 2012 Draft Construction Plan

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  1. Entergy Louisiana, LLC(North)2010 to 2012 Draft Construction Plan Entergy Transmission Planning Summit New Orleans, LA August 11, 2009

  2. 2010 to 2012 ELL-North Transmission Draft Construction Plan Ouachita Transmission Service (Proposed ISD 2012) Delhi: Install 115 kV Reactor (Proposed ISD Summer 2010) Northwest LA / Southwest AR voltage support pan (Sarepta) (Proposed ISD 2011)

  3. Delhi Reactor Scenario: • The loss of the Sterlington - El Dorado 500 kV line results in the underlying Sterlington to Tallulah 115 kV line to exceed its thermal rating. Proposed Solution: • Install a 115 kV, 10Ω series reactor at Delhi. Proposed In-Service Date: Summer2010

  4. Delhi Reactor FROSTCRAFT Delhi: Add 10Ω Series Reactor RILLA Proposed ISD: 2010

  5. NW Louisiana/South Arkansas Voltage Support Plan Scenario: • The following single contingencies will result in low voltages to occur in the southwestern corner of the EAI service territory: • Loss of the Magnolia East - McNeil line segment • Loss of the Magnolia Steel - Magnolia East line segment • Loss of the Magnolia Steel - Kerlin S.S. line segment Additionally the contingency outage of any of the following lines: • 115 kV line from Carroll to RingGold • 115 kV line from Trussel Crossing to Vienna • 115 kV line from Vienna to Mount Olive • 115 kV line from Springhill to Taylor • 115 kV line from Haynesville to Emerson • 115 kV line from Danville to Jonesboro Results in low voltage concerns in north Louisiana • Capacitor bank additions alone do not provide sufficient voltage improvement to this region. • The transmission grid performance can be improved by providing a new EHV source to the area. Proposed Solution: • Construct a new 345 -115 kV station at Sarepta by tapping the El Dorado to Longwood 345kV line • Install a 21.6 MVAR capacitor bank at Emerson (sized at 21.6 MVAR but only installing 10.8 MVAR) • Install a 32.4 MVAR cap bank at Lucky • Install a 32.4MVAR cap bank at Vienna Proposed In-Service Date: 2011

  6. Emerson / Sarepta Area Proposed ISD: 2011 Emerson: 21.6 MVAr sized Capacitor Bank with 10.8 MVAr installed Sarepta: Build 345 - 115kV substation; TapEl Dorado-Longwood line

  7. Lucky / Vienna Area Proposed ISD: 2011 Cap Bank Installations

  8. Ouachita Transmission Service Scenario: • Transmission Service Proposed Solution: Upgrades required for transmission service • Split the Sterlington 115kV bus and replace Sterlington autotransformer #2 with a 500-115 kV, 750 MVA auto. • Relocate existing Sterlington 500/115kV auto #2 to Baxter Wilson (EMI). • Install 43.2 MVAR capacitor bank at Riser. • Upgrade sections of the Frostkraft-Rilla 115kV line to 954 ACSR by rebuilding 2.3 out of 7.8 miles. • Upgrade Walnut Grove-Structure 49 115kV line section (5 mile section of Walnut Grove-Swartz 115kV line) to 1590 ACSR conductor. • Upgrade Sterlington-IPCO 115kV line to 1590 ACSR by rebuilding 5.5 out of 7.8 miles. • Upgrade IPCO-Bastrop 115kV line to 1590 ACSR by rebuilding all 4.2 miles. • Upgrade Bastrop-N. Bastrop Tap-Log Cabin 115kV to 1272 ACSR by rebuilding all 5.8 miles • Upgrade breakers at Vicksburg and Baxter Wilson 115 kV substations (EMI). • North Bastrop Reliability Project: Cut North Bastrop into the Sterlington-North Crossett 115kV line by constructing 7 miles of double-circuit line with 1272 ACSR conductor. Proposed In-Service Date: 2012

  9. Ouachita Transmission Service Proposed ISD: 2012 Loop Sterlington to North Crossett into North Bastrop Split Sterlington 115 kV bus and replace 500-115 auto #2 with 750 MVA FROSTCRAFT Upgrade Sterlington to Log Cabin 115 kV line RILLA Riser 43.2 MVAR Cap Bank Upgrade Walnut Grove to Swartz 115 kV line Upgrade Frostcraft to Rilla 115 kV line

  10. Identified Target Areas Beyond 2013 West Monroe / Monroe Area Delhi/Tallulah area Minden Area Wells Red Gum

  11. Identified Target Areas Beyond 2013 • Minden Area Improvement • Long range project to increase reliability in the Minden area • Re-conductor Minden to Minden LaGen • Add 32.4 MVAR capacitor bank at Minden • West Monroe/Monroe Reliability Improvements • Long range project targeted to increase reliability • Energize 115kV lines built according to 230kV standards to 230kV level • Complete a 230kV loop around Monroe • Red Gum Voltage Improvement • Long range project targeted to increase reliability • Energizing 34kV line built according to 115kV standards to 115kV level • Add a cap bank for voltage support at Winnsboro • Delhi to Tallulah Area • Long range plan to increase reliability to the 115 kV service area • Either construct an EHV source to support the underlying 115 kV area or upgrade various 115 kV lines.

  12. Entergy Louisiana, LLC (South) &Entergy New Orleans, Inc.2010 to 2012 Draft Construction Plan Entergy Transmission Planning Summit New Orleans, LA August 11, 2009

  13. 2010-2012 ELL-South/ENOI Draft Construction Plan Bogalusa-Adams Creek #2: Upgrade 230kV breaker (Proposed ISD Winter 2010) Bogue Chitto: Construct 500-230 kV Substation and upgrade 230 kV line (Proposed ISD 2013) Loblolly-Hammond: Build 230kV line (Proposed ISD 2012) Snakefarm-Kenner: Upgrade thermal capacity (Proposed ISD Winter2010) Paterson: Restore 4 breakers (Proposed ISD 2009) Improve ASI Capability: Phase II- Panama-Dutch Bayou (completed 2009) Phase III- Coly-Vignes (completed 2009) Conway-Bagatelle (completed 2009) SELA Coastal Improvements Phase II - Peters Rd-Oakville (Proposed ISD 2012) Phase III – Oakville-Alliance (Proposed ISD 2012) Bayou Steel-Tezcuco: Build 230kV Line (Proposed ISD 2012) ELL-South

  14. Paterson: Restore 4 Breakers Scenario: • Paterson substation was flooded during Hurricane Katrina resulting in all major transmission equipment being damaged. Prior to Katrina, Paterson 115kV bus terminated four 115kv transmission lines and operated as a hub for the transmission system in the New Orleans area. Presently, the Paterson 115kV bus has been temporarily restored to operate in a split, east / west bus configuration. The east bus is in series with the Chalmette 115kV and the Sherwood Forest 115kV substations. • The west bus is in series with the Claiborne 115kV and the Pontchartrain Park 115kV substations. Various single contingencies in the New Orleans area result in overloads on portions of this west bus circuit. Recommended Solution: • Re-build the Paterson 115kV substation to terminate four 115kV transmission lines from Pontchartrain Park, Sherwood Forest, Chalmette and Claiborne. Proposed In-Service Date: Summer 2009 ENOI

  15. Paterson: Restore 4 Circuit Breakers Restore Breakers Proposed ISD 2009

  16. Snakefarm-Kenner 115kV: Upgrade Thermal Capacity Scenario: • Studies indicate that loss of the Gypsy to Claytonia 115 kV line will result in the Snakefarm to Kenner 115 kV line segment to exceed its thermal rating. Recommended Solution: • Upgrade the thermal rating of the Snakefarm to Kenner 115 kV line segement. Proposed In-Service Date: Winter2010 ELL-South

  17. Snakefarm-Kenner 115kV: Upgrade Thermal Capacity Upgrade Proposed ISD Winter2010 ELL-South / ENOI

  18. Bogalusa-Adams Creek #2 230kV: Upgrade Terminal Equipment at Bogalusa Scenario: • Studies indicate that the Adams Creek to Bogalusa #2 230kV line will exceed its thermal rating upon the loss of the Adams Creek to Bogalusa #1 230kV line. Recommended Solution: • Increase the thermal rating of the Adams Creek to Bogalusa #2 230 kV line. Project will require the upgrade of breaker #S2520 and switches at the Bogalusa substation from 1600A to 3000A. The jumpers between the switches will be upgraded to meet or exceed the existing 883 MVA thermal line rating of the Adams Creek to Bogalusa line. Proposed In-service Date: Winter 2010 ELL-South

  19. Bogalusa-Adams Creek #2 230kV: Upgrade Terminal Equipment at Bogalusa Upgrade Terminal Equipment To Fancy Point McKnight To SOCO’s Plant Daniel To Coly Proposed ISD Winter2010 ELL-South / EGSI-LA

  20. Loblolly-Hammond:Construct 230 kV Substation and Line Scenario: • Entergy’s transmission system north of Lake Pontchartrain is primarily supported from the ELL 230kV system between Willow Glen and Waterford. • Loss of the Franklin-McKnight 500kV line, or certain other transmission contingencies, causes overloads on the underlying transmission system, primarily on the Gypsy-Madisonville 230kV line. • Adding another 230kV source from a location north of Willow Glen reduces loading on the existing system and improves load serving capability north of Lake Pontchartrain and into south Mississippi. Recommended Solution: • Construct a new 230 kV line from Loblolly to Hammond utilizing the existing Coly to Hammond 69 kV line (constructed for 230kV). Proposed In-Service Date: 2012 ELL-South

  21. Loblolly-Hammond: Construct new 230 kV Line To Franklin To Fancy Point McKnight To SOCO’s Plant Daniel To Coly Build new 230kV line Coly Loblolly Proposed ISD 2012 ELL-South / EGSI-LA

  22. Southeast Louisiana Coastal Improvement Plan: Construct New Peters Road-Oakville-Alliance 230 kV Line Scenario: • The primary transmission sources to lower Lafourche, Lower Jefferson, and Plaquemines Parishes are the Ninemile and Valentine substations. Additionally, upper Plaquemines Parish, including Belle Chasse and the Naval Air Support facility, is experiencing growth after Hurricane Katrina. • For the contingency loss of the Ninemile-Barataria 115kV or the Valentine-Clovelly 115kV lines, potential low voltages and line overloads will occur. • Construction of a new 230 kV source into the area will provide the additional thermal capacity needed to serve the Alliance area. Recommended Solution: • Peters Road-Oakville 230kV • Build a new 230kV substation at Oakville and a new radial 230kV line from Peters Road to Oakville Substation. • Proposed In-Service Date: 2012 • Oakville-Alliance 230 kV • Construct a new 230kV transmission line from Oakville substation to Alliance substation. Add a 150MVA 230/115kV auto at Alliance substation. This project also provides support for the Fourchon area. • Proposed In-Service Date: 2012 ELL-South

  23. Peters Rd. Oakville SELA Ph #2 - Peters Road-Oakville 230kV: Build new line and substation SELA Ph #3 - Oakville-Alliance 230 kV: Build new line Build 230kV Line & Sub Build 230kV Line & Auto Build 230kV Line & Auto Proposed ISD 2012 ELL-South

  24. Bayou Steel to Tezcuco: Construct New 230kV Line Scenario: • Studies indicate that the Belle Point-Little Gypsy 230kV transmission line exceeds its thermal rating due to the contingency loss of the Waterford-Tezcuco 230kV transmission line. Additionally, the Waterford-Tezcuco 230kV transmission line will exceed its thermal rating due to the contingency loss of the Belle Point – Little Gypsy 230 kV transmission line. Recommended Solution: • Construct approximately 10.7 miles of new 230 kV transmission line composed of 954 ACSR conductor from Bayou Steel to Tezcuco to provide a parallel 230 kV line. Proposed In-Service Date:2012 ELL-South

  25. Bayou Steel to Tezcuco: Construct New 230kV Line Bayou Steel Build new 230kV line Proposed ISD 2012 ELL-South / EGSI-LA

  26. Bogue Chitto: Build a new 500/230kV substation and upgrade 230kV line from Bogue Chitto-Ramsay-Madisonville Scenario: • Loss of the Franklin to Bogalusa 500kV line results in increased flows on the underlining 115kV system in South Mississippi and ties to North Shore as the 500 kV north to south path is interrupted. Two options are being evaluated to address the impacts on the underlying 230 kV and 115 kV transmission systems in the Louisiana northshore and south Mississippi areas. Proposed Solution: • Option 1: Either tap the 500kV line from McKnight to Daniel-MPCO near where the 500kV line crosses the two 230kV lines from Bogalusa to Ramsay to Madisonville and Bogalusa to Talisheek. Construct a new 500-230kV Bogue Chitto substation. Upgrade the 230 kV Bogue Chitto to Ramsay to Madisonville 230 kV line - OR - • Option 2: Loop the existing Mcknight to Daniel-MPCO 500 kV line in and out of the Bogalusa 500 kV substation. Project will require coordination with neighboring utilities Proposed In-Service Date:2013 ELL-South

  27. Bogue Chitto: Option 1Construct a new 500/230kV substation and upgrade 230kV line To Franklin Build new 230kV substation To Fancy Point McKnight Upgrade 230kV line To SOCO’s Plant Daniel To Coly ELL-South / EGSI-LA

  28. Bogue Chitto: Option 2Loop McKight to Daniel 500 kV line into Bogalusa To Franklin Construct 500 kV facilities To Fancy Point McKnight To SOCO’s Plant Daniel To Coly ELL-South / EGSI-LA

  29. ELL-South and ENOI Target Areas 2013 and Beyond Claytonia 115 kV: Install capacitor bank Paterson: Install 230/115kV auto Napoleonville: Install 21MVAR Capacitor Bank DSG: Phase III Clovelly - Golden Meadow: Upgrade 115kV Line

  30. Identified Target Areas Beyond 2013ELL-S / ENOI • Napoleonville Voltage Support • Add capacitor bank to area for voltage support • Golden Meadow to Clovelly • Either upgrade existing 115 kV line or construct additional 115 kV line in the area. • Paterson • Add 230-115 kV autotransformer at Paterson • DSG Phase 3 • Convert/reconfigure facilities in the DSG area to provide additional 230 kV tie between Waterford and Ninemile • Claytonia Voltage Support • Add capacitor bank to area for voltage support

  31. Entergy Gulf States Louisiana, LLC2010 to 2012 Draft Construction Plan Entergy Transmission Planning Summit New Orleans, LA August 11, 2009

  32. Entergy Gulf States Louisiana, LLC2010 to 2012 Draft Construction Plan Projects Acadia Capacitor Bank Installation (Complete) Tejac to Marydale: Upgrade 69 kV line (Proposed ISD 2012) Carter and EltonCapacitor Bank Installation (Proposed ISD 2010) Addis to Cajun: Upgrade 230 kV line (Proposed ISD 2011) Willow Glen to Conway: Consturct New 230 kV Line (Proposed ISD 2014) Nelson to Mossville: Upgrade 138 kV line (Proposed ISD 2013) Dynergy to Pecan Grove: Construct 2nd 230 kV Line (Proposed ISD 2012) Alchem-Monochem: 138 kV Line Upgrade (Proposed ISD 2011) Acadiana Area Improvement Project Proposed ISD: Phase 1 (2011) Phase 2 (2012) Youngsville 138 kV Distribution Station (Proposed ISD 2011)

  33. Carter and Elton Capacitor Bank Installation (formerly Jefferson Davis: 69 kV Area Improvements) Scenario: Approximately 90 MW of local area load is sourced by the 69kV transmission system between Jennings and Chlomal (including the radial load to the south of Lawtag. The primary "trunks" of the system are the Jennings-Compton-Elton-Tupper-Serpent-Chlomal 69 kV line and the Chlomal-Iowa-Welsh-Lawtag-Jennings 69 kV line. • The contingency outage of a 69kV line segment between Jennings and Elton results in the Chlomal to Lacassine 69kV line to exceed its thermal rating. Likewise, the contingency outage of a 69 kV segment between Chlomal and Carter results in the Jennings to Compton 69 kV line to exceed its thermal rating. • The contingency outage of the Lawtag to Jennings 69 kV line results in the Lake Charles Bulk to Chlomal 69 kV line and the Chlomal to Iowa 69 kV line segment to exceed their thermal rating. Recommended solution: • Establish normally open point at Serpent and Lawtag. Proposed ISD: 2010 • Upgrade 69 kV capacitor bank at Elton to 14 MVAR, Install 69 kV, 14 MVAR capacitor banks at Carter. Proposed ISD: 2010

  34. NOP at Serpent 14.4MVAr Cap Bank at Elton 14.4MVAr Cap Bank at Carter NOP at Lawtag Proposed ISD: 2010

  35. Youngsville 138 kV Distribution Station(formerly Upgrade Lafayette-Holiday-Billeaud 69 kV line) Scenario: • There is approximately 141 MW of load in the area between Scott and New Iberia. The Lafayette-Holiday-Billeaud line is currently rated at 39 MVA. • Loss of Cleco’s Flanders to Hopkins 138kV Line, the Moril 138/69 kV autotransformer, or the Moril to New Iberia 69 kV line will result in the Lafayette to Holiday to Billeaud 69kV line to exceed its thermal rating. Recommended Solution: • Tap Cleco’s 138kV Flanders to Hopkins line and construct a new 138 -13.8kV distribution substation to allow area load at Billeaud and Averico to be shifted off of the existing 69 kV transmission system. Proposed ISD: 2011

  36. Construct new station. Proposed ISD: 2010 Proposed ISD: 2011

  37. Alchem - Monochem: Uprate 138 kV Line Scenario: • In the industrial corridor, the Alchem to Monochem 138kV line is part of a 138 kV path that operates parallel to Willow Glenn to Conway 230 kV line. • The contingency loss any of the 230 kV segments from Willow Glen to Vulchlor will result in the Alchem to Monochem 138 kV line to exceed its thermal rating. Recommended Solution: • Uprate line to 100 deg C operating temperature by replacing 6 structures. Project will increase rating of line from 225 MVA to 275 MVA. Proposed In-Service Date: 2011

  38. Alchem - Monochem: Uprate 138 kV Line Uprate 138kV Line Proposed ISD: 2011

  39. Addis to Cajun Line Upgrade Scenario: In the winter of 2011, loss of the Webre to Big Cajun 500 kV line or the Jaguar to Esso Tap 230 kV line results in the existing Addis to Cajun 230 kV line to exceed its thermal rating. Recommended Solution: Reconductor from structure 250 to 251 (0.06 miles) to double bundled 649.5 ACAR Proposed In-Service Date: 2011

  40. Addis to Cajun 230 kV Line Upgrade Upgrade Line Proposed ISD: 2011

  41. Acadiana Area Improvement ProjectPhase 1 and Phase 2 Scenario: • Results of a long term joint study performed by Entergy, CLECO, LUS, and the ICT determined a set of reliability and economic projects beneficial to the Acadiana Load Pocket. • Project was developed to be constructed in two phases. Recommended Solution: Phase 1 (Entergy Projects) • Meaux Substation: Install 230 kV and 138kV terminals to connect 450MVA 230-138kV autotransformer. • Moril Substation: Install 138kV line terminal for Cleco’s Segura to Moril 138kV Transmission Line. • Richard Substation: Install 500kV terminal to connect Cleco’s 500-230kV 750MVA autotransformer adjacent to Entergy’s Richard substation. • Meaux to Sellers Road Transmission Line: Construct 9.5 miles of 439MVA (954 ACSR) 230kV Transmission line on new 100’ right-of-way. Cleco’s Sellers Road line bay constructed by Cleco. Proposed ISD: 2011

  42. Acadiana Area Improvement ProjectPhase 1 and Phase 2Continued Recommended Solution (continued): Phase 2 • Wells Substation: Construct 500 kV terminal to connect CLECO’s owned and installed 500-230 kV 560 MVA autotransformer. • Labbe to Sellers Road 230 kV Line: Construct approximately 15 miles of 230kV 829 MVA line from LUS's Labbe 230 kV Substation to CLECO's Sellers Road Substation. Labbe 230 kV line bay and breaker constructed by LUS. Sellers Road 230 kV line bay and breaker constructed by CLECO. • Upgrade 69 kV breaker at Scott and 69 kV breaker at Moril. Proposed ISD: 2012

  43. Acadiana Area Improvement ProjectPhase 1 and Phase 2 Proposed ISD: 2011 / 2012

  44. Pecan Grove to Dynegy (Calcasieu) Scenario: Loss of the 1.7 mile, Pecan Grove to Dynegy 230 kV line will result in the Nelson to Moss Bluff 230kV line segment (Lake Charles 230 kV loop) to exceed its thermal rating. Recommended Solution: • Construct a second 230kV line with a minimum rating of 641 MVA form Pecan Grove to Dynegy. • Install breakers at Pecan Grove and Dynegy. Proposed In-Service Date: 2012

  45. Pecan Grove to Dynegy (Calcasieu) Proposed ISD: 2012 Construct 2nd 230kv Line

  46. Tejac to Marydale Scenario: • The 69 kV transmission system north of Port Hudson substation serves 12 substations. • The Tejac to Marydale 69 kV line segment will exceed its thermal rating due to the loss of Port Hudson - Sandy Creek - Jackson or Francis - Grant - Port Hudson. Recommended Solution: • Upgrade the 3 mile Tejac to Marydale 69kV line segment to a rating of at least 69 MVA Proposed In-Service Date: 2012

  47. Tejac to Marydale Upgrade 69kv Line Proposed ISD: 2012

  48. Nelson to Mossville Scenario: • Loss of the Carlyss to Citcon West 138 kV line will result in Nelson to Mossville 138 kV line to exceed its thermal rating. Recommended Solution: • Upgrade the 3.3 mile Nelson to Mossville 138 kV line to at least 380 MVA. Proposed In-Service Date: 2013

  49. Nelson to Mossville Upgrade 138kv Line Proposed ISD: 2013

  50. Willow Glen to Conway 230 kV line Scenario: • Loss of the Willow Glen to Waterford 500 kV or the Coly to Vignes 230 kV line results in the St. Gabriel to A.A.C. to Belle Helene 230 kV line to exceed its thermal rating. Recommended Solution: • Construct a new 230kV line from Willow Glen to Conway (approximately 15 miles) with a minimum rating of at least 700 MVA. Proposed In-Service Date: 2014

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