Entergy Louisiana LLC South Entergy New Orleans Inc

Entergy Louisiana, LLC (South) & Entergy New Orleans, Inc. Proposed Transmission Reliability Projects Entergy Transmission Planning Summit New Orleans, LA July 31, 2007 1

Approved 2007 & Proposed 2008 -2012 ELL-South/ENOI Transmission Reliability Projects Hammond-Amite: Loblolly-Hammond: Build 230 k. V line Convert to 230 k. V (2007 ISD) DSG – Planned Carryover (2011 ISD) Phase I (completed 2004) Phase II (complete 2005) Phase III (2011 ISD) Napoleonville: Paterson: • Restore 4 breakers (2008 ISD) Install Cap Bank (2010 ISD) Improve ASI Capability: Planned Carryover Phase I - Conway-Panama (completed 2005) Phase II- Panama-Dutch Bayou (2009 ISD) Phase III- Coly-Vignes (2009 ISD) Conway-Bagatelle(2009 ISD 2 Peters Rd-Oakville : Build 230 k. V line & Station (2011 ISD) Oakville-Alliance: Build 230 k. V line & Auto (2012 ISD) ELL-South

Hammond-Independence-Amite 115 k. V: Convert to 230 k. V Scenario: • The Hammond-Independence-Amite 115 k. V line is limited by the Hammond 230/115 k. V, 168 MVA autotransformer and an 800 Amp circuit breaker at Amite. This circuit overloads for a single contingency loss of the Franklin-Mc. Knight 500 k. V line or the loss of the Bogalusa-Franklinton 115 k. V line. Solution: • Convert the Hammond-Independence-Amite 115 k. V line to 230 k. V operation (line constructed to 230 k. V) and build a new Independence 230 k. V substation. Install a 230/115 k. V, 400 MVA autotransformer at Amite and remove the autotransformer at Hammond. • Expected In-Service Date: By year end 2007 NOTE: This project needs to be in place prior to the Loblolly-Hammond 230 k. V line. Otherwise, overloads cited above will be exacerbated. • 3 Estimated Cost: $18 MM ELL-South

Hammond-Independence-Amite 115 k. V: Convert to 230 k. V To Franklin To Fancy Point Mc. Knight To Coly To SOCO’s Plant Daniel Convert to 230 k. V 4 ELL-South

Paterson: Restore 4 Breakers Scenario: • • Paterson substation was flooded during Hurricane Katrina resulting in all major transmission equipment being damaged. Prior to Katrina, Paterson 115 k. V bus terminated four 115 kv transmission lines and operated as a hub for the transmission system in the New Orleans area. Presently, the Paterson 115 k. V bus has been temporarily restored to operate in a split, east / west bus configuration. The east bus is in series with the Chalmette 115 k. V and the Sherwood Forest 115 k. V substations. The west bus is in series with the Claiborne 115 k. V and the Pontchartrain Park 115 k. V substations. Various single contingencies in the New Orleans area now could result in overloads on portions of this west bus circuit. Recommended Solution: • 5 • Re-build the Paterson 115 k. V substation to terminate four 115 k. V transmission lines from Pontchartrain Park, Sherwood Forest, Chalmette and Claiborne. The bus configuration should be configured in a double bus with shared breaker configuration (breaker and a 1/2). This arrangement will allow for station expansion, including power transformer additions and potentially the addition of a 230/115 k. V auto transformer as system conditions dictate. Proposed In-Service Date: 2008 • Estimated Cost: $3 MM ENOI

Paterson: Restore 4 Circuit Breakers Restore Breakers 6

Napoleonville: Install Capacitor Bank Scenario: • Entergy Louisiana serves load in portions of Iberville, Assumption and La. Fourche Parishes from a 115 k. V transmission line traversing these parishes. The line includes the Addis, Plaquemines, Mc. Call, Paincourtville, Napoleonville and Raceland substations. • A single contingency loss of either the Addis 230/115 k. V autotransformer or the Addis to Plaquemines 115 k. V line results in depressed voltages from Plaquemine to Paincourtville. Recommended Solution: 7 • Install a 21. 6 MVAr capacitor bank at Napoleonville 115 k. V substation. • Proposed In-Service Date: 2010 • Estimated Cost: $850 k ELL-South

Napoleonville: Install Capacitor Bank Install Cap Bank 8

Loblolly-Hammond: Construct 230 k. V Substation and Line Scenario: • Entergy’s transmission system north of Lake Pontchartrain is primarily supported from the ELL 230 k. V system between Willow Glen and Waterford. – Loss of the Franklin-Mc. Knight 500 k. V line, or certain other transmission contingencies, causes overloads on the underlying transmission system, primarily on the Gypsy-Madisonville 230 k. V line. – Adding another 230 k. V 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 230 k. V line from Coly to Hammond using existing Coly–Loblolly 69 k. V line (constructed for 230 k. V). Construct Coly-Loblolly 69 k. V line to maintain existing loop service to Loblolly. • Proposed In-Service Date: 2011 NOTE: This line cannot be connected until the Hammond-Amite line is converted to 230 k. V operation. Estimated Cost: $75 MM 9 ELL-South

Coly-Hammond: Build 230 k. V Line To Franklin To Fancy Point Mc. Knight To Coly Build new 230 k. V line To SOCO’s Plant Daniel Coly 10 ELL-South / EGSI-LA

ASI Improvement Plan - Phases 2 & 3 Scenario: • When generation in the Amite South area is low, loss of the Waterford–Willow Glen 500 k. V line is the most severe contingency that establishes the Amite South Import (ASI) capability. • The ASI capability improved to approximately 2, 450 MW upon completion of Phase 1 of the ASI Improvement Plan (Conway-Panama) in 2005. • Phase 2 (Panama-Dutch Bayou) and Phase 3 (Coly-Vignes, Conway-Bagatelle) were expected to provide economic benefits and were to be completed by 2007 prior to Hurricane Katrina. • Post Hurricane Katrina and the subsequent loss of load within southeast LA, Phases 2 and 3 were determined to be needed for reliability by 2015 or by 2010 for economics. • Through the 2006 Transmission Study, Entergy determined that accelerating Phases 2 & 3 could yield economic benefits sufficient enough to advance the in-service dates to earlier than 2010. Recommended Solution: • Recommence the construction of Phases 2 & 3. • Proposed In-Service Date: 2009 (Phases 2 & 3) Estimated Project Costs: • Phase 2: $38 MM • Phase 3: $20 MM 11 ELL-South / EGSI-LA

ASI Improvement Plan - Phase 2 Build 230 k. V line Panama 12 ELL-South

Coly Vignes ASI Improvement Plan - Phase 3 Upgrade 230 k. V line Panama 13 ELL-South / EGSI-LA

Downstream of Gypsy (DSG) Area Scenario: • During high load conditions, the loss of certain generation within the DSG area results in inadequate voltage support and thermal overload to area lines. To address the voltage and thermal reliability issues, Entergy proposed the following projects. Recommended Solution: • Phase 1, completed in 2004, installed one 151. 2 MVAr capacitor bank at Ninemile 230 k. V and two 84. 6 MVAr capacitor banks at Michoud 230 k. V. • Phase 2, completed in 2005, constructed multiple projects across the DSG area. • Phase 3, includes various upgrades, system reconfigurations and a voltage conversion in the DSG area. See next slide. • Based on current load projections within the DSG area, the DSG Phase 3 projects are expected to be in service by 2011. However, this in-service date could change depending upon the location and rate of load return within the New Orleans metro area. • Through the 2006 Transmission Study, Entergy determined that accelerating Phase 3 would not yield economic benefits sufficient enough to advance the in-service date. 14 ELL-South / ENOI

2011 DSG Area Transmission Improvements Phase 3 • Upgrade 115 k. V line segment (Little Gypsy-Claytonia) • Upgrade Waterford-Gypsy river crossing #2. Re-terminate reactor on to Waterford –UCC 230 k. V line • Reconfigure Hooker–Waterford 230 k. V loop into Hooker–Little Gypsy 230 k. V • Rebuild Luling-American Cyanamid 115 k. V • Upgrade / convert one Gypsy-Luling 115 k. V double circuit line segments to 230 k. V from Waterford to Luling (bypass Luling) • Install 108 MVAr of capacitor banks at Paterson and Snakefarm • Convert Luling-Waggaman-Ninemile 115 k. V to 230 k. V. Replace underrated switches and breakers. Convert Waggaman Substation to 230 k. V. • Replace under-rated 115 k. V breakers at Little Gypsy 15 ELL-South / ENOI

Southeast Louisiana Coastal Improvement Plan: Construct New Peters Road-Oakville-Alliance 230 k. V Line Scenario: • The primary transmission sources to lower Lafourche, Lower Jefferson, and Plaquemines Parishes are the Ninemile and Valentine substations. Although lower Plaquemines Parish experienced heavy damage during Hurricane Katrina, it is expected that oil refining and pumping facilities in the area will be restored. • Additionally, upper Plaquemines Parish, including Belle Chasse and the Naval Air Support facility, is experiencing growth. • For the contingency loss of the Ninemile-Barataria 115 k. V or the Valentine-Clovelly 115 k. V lines, potential low voltages and line overloads exists. Recommended Solution: • Peters Road-Oakville 230 k. V – – – • Oakville-Alliance 230 k. V – – – 16 Build a new 230 k. V substation at Oakville and a new radial 230 k. V line from Peters Road to Oakville Substation. Proposed In-Service Date: 2011 Estimated Cost: $21. 3 MM Construct a new 230 k. V transmission line from Oakville substation to Alliance substation. Add a 150 MVA 230/115 k. V auto at Alliance substation. This project also provides support for the Fourchon area. Proposed In-Service Date: 2012 Estimated Cost: $35 MM ELL-South

Peters Road-Oakville 230 k. V: Build new line and substation Oakville-Alliance 230 k. V: Build new line Peters Rd. Oakville 17 Build 230 k. V Line & Sub Build 230 k. V Line. Build & Auto Line & Auto ELL-South

ELL-South and ENOI Target Areas 2012 and Beyond Bogue Chitto: Build 500 k. V Switching Station and 500 k. V Line Paterson: Install 230/115 k. V auto Golden Meadow - Fourchon: Build 115 k. V Line 18