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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.

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Presentation on theme: "1 Entergy Louisiana, LLC (North) 2010 to 2012 Draft Construction Plan Entergy Transmission Planning Summit New Orleans, LA August 11, 2009."— Presentation transcript:

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

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

3 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: Summer 2010

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

5 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 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 6 Emerson / Sarepta Area Sarepta: Build kV substation; Tap El Dorado-Longwood line Emerson: 21.6 MVAr sized Capacitor Bank with 10.8 MVAr installed Proposed ISD: 2011

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

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

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

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

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

14 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 15 Paterson: Restore 4 Circuit Breakers Restore Breakers Proposed ISD 2009

16 16 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: Winter 2010 Snakefarm-Kenner 115kV: Upgrade Thermal Capacity ELL-South

17 17 ELL-South / ENOI Snakefarm-Kenner 115kV: Upgrade Thermal Capacity Upgrade Proposed ISD Winter 2010

18 18 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 Bogalusa-Adams Creek #2 230kV: Upgrade Terminal Equipment at Bogalusa ELL-South

19 19 McKnight To SOCO’s Plant Daniel To Coly To Fancy Point Bogalusa-Adams Creek #2 230kV: Upgrade Terminal Equipment at Bogalusa Upgrade Terminal Equipment ELL-South / EGSI-LA Proposed ISD Winter 2010

20 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 21 McKnight To Franklin To SOCO’s Plant Daniel To Coly To Fancy Point Loblolly Loblolly-Hammond: Construct new 230 kV Line Build new 230kV line ELL-South / EGSI-LA Coly Proposed ISD 2012

22 22 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 Southeast Louisiana Coastal Improvement Plan: Construct New Peters Road-Oakville-Alliance 230 kV Line ELL-South

23 23 ELL-South 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 & Auto Peters Rd. Oakville Build 230kV Line & Auto Build 230kV Line & Sub Proposed ISD 2012

24 24 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 Bayou Steel to Tezcuco: Construct New 230kV Line ELL-South

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

26 26 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 kV 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 Bogue Chitto: Build a new 500/230kV substation and upgrade 230kV line from Bogue Chitto-Ramsay-Madisonville ELL-South

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

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

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

30 30 Identified Target Areas Beyond 2013 ELL-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 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 31 Entergy Gulf States Louisiana, LLC 2010 to 2012 Draft Construction Plan Entergy Transmission Planning Summit New Orleans, LA August 11, 2009

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

33 33 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 Carter and Elton Capacitor Bank Installation (formerly Jefferson Davis: 69 kV Area Improvements)

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

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

37 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 38 Uprate 138kV Line Alchem - Monochem: Uprate 138 kV Line Proposed ISD: 2011

39 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 ACAR Proposed In-Service Date: 2011

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

41 41 Acadiana Area Improvement Project Phase 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 kV 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 kV 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 42 Acadiana Area Improvement Project Phase 1 and Phase 2 Continued Recommended Solution (continued): Phase 2 –Wells Substation: Construct 500 kV terminal to connect CLECO’s owned and installed 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 43 Acadiana Area Improvement Project Phase 1 and Phase 2 Proposed ISD: 2011 / 2012

44 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 45 Pecan Grove to Dynegy (Calcasieu) Construct 2nd 230kv Line Proposed ISD: 2012

46 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 47 Tejac to Marydale Upgrade 69kv Line Proposed ISD: 2012

48 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 49 Nelson to Mossville Upgrade 138kv Line Proposed ISD: 2013

50 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

51 51 Willow Glen to Conway 230 kV line Construct NEW 230kv Line WILLOW GLEN CONWAY Proposed ISD: 2014

52 52 Identified Target Areas Beyond 2013 Baton Rouge Area Port Hudson Harelson – Gloria Area McManus – Brady Heights Jackson – Tejac Greenwell Springs Area Acadiana Area Moril Add 138–69 kV Auto Scott – Carencro 69 kV Champagne 138 kV Lake Charles Area Solac Add Auto Lawtag – Jennings 69 kV upgrade Lake Charles Bulk Add Auto LC Bulk - Cholomal – Lacassine 69 kV upgrade Lake Charles 230 kV Improvement Mossville to Alfol 69 kV

53 53 Identified Target Areas Beyond 2013 Baton Rouge Area Port Hudson –Long range project targeted to increase reliability of 69kV system –Reconfigure 69kV station and/or bring in a new 138kV source Harelson – Gloria –Long range project targeted to increase reliability of 69kV system –Upgrade 69kV line McManus – Brady Heights –Long range project targeted to increase reliability of 69kV system Jackson – Tejac –Long range project targeted to increase reliability of 69kV system Greenwell Springs Area Reconfiguration –Long range project targeted to increase reliability of 69kV system –Upgrade overloaded 69kV lines or relay upgrade to allow for three terminal lines

54 54 Identified Target Areas Beyond 2013 Baton Rouge Area Jackson – Tejac Upgrade McManus – Brady Heights Upgrade Port Hudson – Reconfigure or new source Greenwell Springs Area Reconfiguration Line or Relay Upgrades Harelson – Gloria Upgrade

55 55 Identified Target Areas Beyond 2013 Acadiana Area Moril –Add 2nd 138/69kV autotransformer to eliminate contingency loss of existing auto Scott – Carencro –Long range project targeted to increase reliability of 69kV system –Upgrade 69kV line Champagne –Long range project to provide voltage support during contingency outages –Add 138 kV Capacitor Bank

56 56 Identified Target Areas Beyond 2013 Acadiana Area Moril Add Autotransformer Champagne 138 kV Cap Bank Scott – Carencro 69 kV Upgrade

57 57 Identified Target Areas Beyond 2013 Lake Charles Area Solac –Long range project targeted to increase reliability of 69kV system –Upgrade kV autotransformers or add 3 rd auto Lawtag – Jennings –Long range project targeted to increase reliability of 69kV system –Upgrade 69kV line Lake Charles Bulk Autotransformer and upgrade 69 kV lines –Long range project targeted to increase reliability of 69 kV system –Add 3rd kV autotransformer –Upgrade Lake Charles Bulk to Chlomal to Lacassine 69 kV lines Lake Charles 230 kV Improvement –Long range project targeted to increase reliability of 230 and 138kV system –Build a new 230kV line from Nelson towards LC Bulk and kV station to create 230kV loop Mossville to Alfol 69 kV

58 58 Identified Target Areas Beyond 2013 Lake Charles Area Lake Charles Improvement 230kV Loop Solac Upgrade or add Auto Lawtag – Jennings Upgrade LC Bulk – Chlomal Re-conductor Cholomal – Lacassine Upgrade line & install breaker LC Bulk – Add 3 rd Auto

59 59 Entergy Texas, Inc to 2012 Draft Construction Plan Entergy Transmission Planning Summit New Orleans, LA August 11, 2009

60 to 2012 ETI Transmission Draft Construction Plan Fawil: Upgrade Auto Proposed ISD Winter 2009 Newton Bulk Retap CT Proposed ISD Summer2009 College Station Porter-Tamina: Replace Breaker/Switches Proposed ISD Winter 2009 College Station Tap: Close N.O. Switch Proposed ISD Winter 2010 Beaumont 69 kV Improvement Plan Proposed ISD Summer 2009 WRRIP 3 Interim: Part 1 - Relocate Caney Creek Proposed ISD Winter 2010 Part 2 – Convert Jacinto to Lewis Creek Proposed ISD Summer 2011 Part 3 – Upgrade S Beaumont to Fontenot’s Corner 138 kV line Proposed ISD Winter 2010 Hartburg – McLewis 230kV Line Upgrade Proposed ISD 2011 Tamina to Cedar Hill: Upgrade Line Proposed ISD Winter 2011 Cedar Hill – Plantation - Conroe: Upgrade Line Proposed ISD 2012

61 61 69 kV Beaumont Network Upgrades Scenario: In the 69kV Beaumont area there exists several single contingency thermal overloads including: o69kV Line 581 (Helbig – Rosedale) o69kV Line 468 (Elizabeth – Gallier) o230/69kV Helbig Autotransformers o69kV Bus Tie Breakers (Helbig & Amelia) Recommended Solution: Add line breakers at Yankee Doodle 69kV Substation. Close normally open points at Lincoln and Crockett 69kV Substations. Rebuild 69kV Line 576 (Lincoln – South Beaumont) & 69kV Line 98/190 (Dupont Beaumont – South Beaumont) to 106MVA capacity. oApproximately 5.5 miles of 69kV transmission lines Proposed In-Service Date: Summer 2009

62 62 69 kV Beaumont Network Upgrades CARDINAL LAMAR SOUTH BEAUMONT BULK VIRGINIA LINCOLN YANKEE DOODLE CROCKETT DUPONT BEAUMONT NITRO CDT L-458 L-155 UPGRADE LINE 576 UPGRADE LINE 190 UPGRADE LINE 98 CLOSE N.O. SWITCH CLOSE N.O. BREAKER ADD LINE BREAKERS Proposed ISD Summer 2009

63 63 Newton Bulk: Re-tap CT Scenario: The single contingency outage of the Cypress-Hartburg 500 kV line causes an overload of the Newton Bulk-Holly Springs 138 kV line. The rating of this line is limited to 143 MVA by a CT ratio at Newton Bulk. Recommended Solution: Re-tap the CT at Newton Bulk to achieve a rating of 280 MVA on the line Proposed In-Service Date: Summer 2009

64 64 Newton Bulk: Re-tap CT Proposed ISD Summer 2009

65 65 Fawil: Replace 138/69 kV Autotransformer Scenario: Contingency events along 69 kV Line 81 (Fawil-Deweyville-Echo) cause loads on Line 81 to be served radially through the Fawil 138/69 kV autotransformer, resulting in overloads on the transformer during peak load conditions. The transformer is currently rated at 20 MVA. Recommended Solution: Replace the autotransformer with a system spare 138/69 kV, 45 MVA unit, located at Meaux substation in Louisiana. Add two 138 kV breakers to ensure reliable operation Proposed In-Service Date: Winter 2009

66 66 Fawil: Replace 138/69 kV Autotransformer Proposed ISD Winter 2009

67 67 Porter-Tamina: Replace Breaker/Switches Scenario: 138 kV Line 823/886 (Porter – Tamina - Cedar Hill) is one of the primary sources into Montgomery County. The single contingency loss of 138 kV Line 582 (Oak Ridge - Porter) causes thermal overloads on 138 kV Line 823 (Porter to Tamina). Recommended Solution: Upgrade station equipment at Tamina, including a breaker, switches, and bus, to bring rating of Line 823 Porter-Tamina up to 478 MVA capacity. Proposed In-Service Date: Winter 2009

68 68 Porter-Tamina: Replace Breaker/Switches UPGRADE TO 478 MVA CAPACITY BY REPLACING TAMINA EQUIPMENT Proposed ISD Winter 2009

69 69 College Station Tap: Close N.O. Switch Scenario: The single contingency outage of the Grimes-Navasota 138kV line causes overloads along the Lewis Creek-Longmire 138kV line, as well as undervoltages along the Navasota-Longmire 138kV line. Recommended Solution: Close the normally-open switch between Speedway 138kV and the College Station 138kV tap to bring another path from Grimes into Navasota Proposed In-Service Date: Winter 2010 * Project has been delayed due to feasibility of implementing a three terminal operating configuration. A three-breaker switching station at College Station is being investigated as an alternative solution.

70 70 College Station Tap: Close N.O. Switch COLLEGE STATION TAP N.O. Proposed ISD Winter 2010

71 71 Western Region Reliability Improvement Plan Phase 3 Interim (Parts 1 and 3) Scenario: Load growth within the Western Region load pocket is such that transmission improvements are necessary to reliably serve the area under an N-1, G-1 contingency criteria Recommended Solution: Part 1 - Relocate Caney Creek load delivery point (ETEC-owned) to new location on 138 kV Line 587 (Lewis Creek – Conroe) Part 3 - Reconductor Line 88/66 from Fontenot’s Corner to South Beaumont 138 kV station [~9 miles] Proposed In-Service Date: Winter 2010 Estimated Cost: $15 MM

72 72 Western Region Reliability Improvement Plan Phase 3 Interim (Parts 1 and 3) Relocate Caney Creek 138kV to Line 587 Upgrade Line 88/66 Proposed ISD Winter 2010

73 73 Western Region Reliability Improvement Plan Phase 3 Interim (Part 2) Scenario: Load growth within the Western Region load pocket is such that transmission improvements are necessary to reliably serve the area under an N-1, G-1 contingency criteria Recommended Solution: Convert 138 kV Lines 524/824 (Jacinto-Lewis Creek) to 230 kV operation [~30 miles] Convert Peach Creek Substation (ETEC-owned) from 138 kV to 230 kV Operation Install 230 kV Substation at Lewis Creek including 230/138 kV autotransformer Projected In-Service Date: Summer 2011

74 74 Western Region Reliability Improvement Plan Phase 3 Interim (Part 2) Convert Line 524/824 Proposed ISD Summer 2011

75 75 Hartburg-Inland Orange-McLewis 230 kV Line Upgrade Scenario: 230 kV Line 195 (Hartburg – Inland Orange – McLewis) is one of the primary sources into the Beaumont/Port Arthur area. The single contingency loss of 500 kV Line 547 (Cypress – Hartburg) causes thermal overloads on Line 195. Recommended Solution: Re-conductor approximately 13 miles of 230kV Line 195 (Hartburg – Inland Orange - McLewis) and upgrade station equipment as necessary to achieve 800 MVA capacity along entire circuit. Projected In-Service Date: Summer 2011

76 76 Hartburg-Inland Orange-McLewis 230 kV Line Upgrade MCLEWIS Proposed ISD Summer 2011

77 77 Tamina – Conroe 138kV Reconductor Scenario: 138 kV Line 886 (Tamina – Cedar Hill – Plantation – Conroe) is one of the primary sources into the Montgomery County load pocket. The single contingency loss of 138 kV Line 582 (Oak Ridge - Porter) causes thermal overloads on 138 kV Line 886 (Tamina - Conroe). Recommended Solution: Re-conductor approximately 10 miles of 138kV Line 886 (Tamina – Cedar Hill – Plantation – Conroe) and upgrade station equipment as necessary to achieve 478 MVA capacity along entire circuit. Proposed In-Service Dates: Winter 2011 (Tamina – Cedar Hill) Summer 2012 (Cedar Hill – Plantation – Conroe)

78 78 Tamina – Conroe 138kV Reconductor UPGRADE TO 478 MVA CAPACITY Proposed ISD: Tamina to Cedar Hill Winter 2011 Cedar to Plantation to Conroe Summer 2012

79 79 Reconductor Jasper-Rayburn 138 kV Line Scenario: The single contingency outage of the Cypress-Hartburg 500 kV line causes an overload of the Jasper-Rayburn 138 kV line Recommended Solution: Reconductor the Jasper-Rayburn 138 kV line (approx miles) to achieve a capacity of 265 MVA Proposed In-Service Date: Summer 2013

80 80 Reconductor Jasper-Rayburn 138 kV Line Proposed ISD Summer 2013

81 81 Identified Target Areas Beyond 2013 Corrigan/Cleveland/Kountze Area Improvements Shepard/Cleveland/Honey Island/Corrigan Capacitor Banks Upgrade Kountze to Warren 138 kV Upgrade Pelican Road to Shepard 138 kV Lakes Area Improvements Mill Creek/Call/Doucette Capacitor Banks Upgrade Doucette to Rayburn 138 kV Upgrade Newton Bulk to Toledo 138 kV Cypress/Jacinto/Dayton Area Improvements Dayton/New Caney Capacitor Banks Upgrade Dayton to Cleveland 138 kV Upgrade Dayton to Eastgate 138 kV Upgrade Jacinto to Porter 138 kV Upgrade Jacinto to Cleveland 138 kV WRRIP Phase 3 Final 2 nd Cypress Auto Upgrade Cypress to Lumberton 138 kV Huntsville/Conroe Area Improvements Huntsville/Rivtrin Capacitor Banks Conroe Switching Station Alden SVC Ameila to Helbig 230 kV Upgrade Ameilia to Cypress 230 kV Upgrade 2 nd China to Amelia 230 kV Line Orange County 230 kV Swithcing Station Sabine to Port Neches 138 kV Upgrades Ameilia/Beaumont Area Improvements


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