Cleco Transmission Planning Summit 2011 Coughlin Transmission Operations Center April 15, :00 – 11:00am

Welcome Terry Whitmore, Mgr- Trans Planning & Operation Support James Simms, Lead Engineer- Transmission Planning Chris Thibodeaux, Sr. Engineer- Transmission Planning Robby Michiels, Sr. Engineer- Transmission Planning Introduction

Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

Economic Planning Studies None were requested for 2011

Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

Acadiana Load Pocket Project Update

Acadiana Load Pocket

Acadiana Load Pocket Project Year 2010 Progress Report Flanders – Hopkins 138KV Transmission line tapped for new Segura substation. New Segura 230/138KV Cleco substation Phase I completed – 138KV facilities are presently energized – 230KV facility commission is scheduled for the end of second quarter 2011 New Segura – Moril 138KV Transmission line completed & connected to Segura 138KV bus

ALP Project Update – Summer 2010 Cleco- 230KV Segura Substation Cleco- Segura to Moril 138KV Trans. Line (0.2 mi) Note: Hopkins – Flanders 138KV line is tapped for new Segura substation. Just 138KV bus is energized at this point.

ALP Project Update – Summer 2011

ALP Project Update – Summer 2012

ALP Project Update Questions ?

Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

Cleco 2011 Transmission Construction Plan

Budgeted Projects Near term projects deal with Cleco’s obligations to the Acadiana Load Pocket Project and the Reliable operation of the Bulk Electric System.

Cleco 2011 Transmission Construction Plan Budgeted Projects Build a new 230KV Transmission line from Wells to the LUS Labbe Substation Reconductor existing Segura – Hopkins 138KV transmission line (This will complete Cleco’s participation in the ALP project.) Second 230/138KV Autotransformer at Cocodrie Substation 2012 Construction of a new Rork 230KV Substation adjacent to the one at Richard Build a new 230KV Transmission line from Rork to the Sellers Road Substation Construction of a new 230KV Sellers Road Substation Build a new 230KV Transmission line from Sellers Road to the Segura Substation Construction of a new Mansfield Compressor 230KV Substation tapping Dolet Hills – Fisher 230KV line Construction of a new Clarence – Maurice 69KV transmission line Transmission element replacements on Plaisance – Coughlin 138KV transmission line 2011

ALP Project Timeline (All participants) 2011 Cleco- 230KV Sellers Road Substation Cleco- 230KV Rork Substation Cleco- 230KV Rork - Sellers Road Trans. Line (30.1 mi) Cleco- 230KV Sellers Road- Segura Trans. Line (17 mi) Entergy- 230KV Sellers Road- Meaux Trans. Line (8.3 mi) Cleco- 230KV Wells - Labbe Trans. Line (17 mi) Entergy- 230KV Sellers Road - Labbe Trans. Line (14 mi) LUS- 230KV Labbe - Bonin Trans. Line (3 mi) 2012 Cleco- Reconductor 138KV Segura- Hopkins Trans. Line (3 mi) [Serves to enhance the ALP project objectives] Cleco 2011 Transmission Construction Plan

Long Range Planning- 5 years or greater System models used in the analysis go out 5 years and beyond Inputs are extrapolated from short term planning estimates Accuracy is therefore limited Results are given leeway in terms of interpretation Long Term Planning does allow the identification of potential areas of concern Attention is given to those problems that remain consistent over model runs especially those that get closer to the present Typically, there is enough time to develop mitigation plans and fund projects Long Range Planning Analysis has identified some areas of concern These occur at the end of the planning horizon At this time, these areas don’t warrant the outlay of capital but will be noted

Cleco 2011 Transmission Construction Plan Regions in purple indicate potential planning criteria violations Bus Under Voltage

Cleco 2011 Construction Plan 2022 Study Cases Bus under voltage Violations Mitigation: Investigate installation of capacitor banks at Pine Prairie. Pine Prairie 138KV Bus Voltage P.U. Most limiting Contingency: Coughlin – Pine Prairie 138KV Line Oakdale 138KV Bus Voltage P.U. Mitigation: Investigate installation of capacitor banks at Plaisance. Most limiting Contingency: Coughlin – Plaisance 138KV Line Plaisance 138KV Bus Voltage P.U.

Cleco 2011 Transmission Construction Plan Questions ?

Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

New NERC standards mandated Cleco to re-evaluate all 100KV and above Transmission Line Ratings including the following elements: – Breakers – Switches – Conductor – Jumpers – Bus – CT Ratios – Wave Traps – Relay Setting Limits

Results of Analysis Upgrade of multiple lines whose limiting element created base case overloads Since 2010 – Changed Normal Rating temperature basis from 85° to 93°C Increased Normal Ratings – Changed Normal and Emergency Rating procedures for jumpers Increased Normal and Emergency Ratings

Comparison of 2010 to 2011 SPP series of models: – Cleco Transmission lines 100KV or greater 51% had their A rating increase – 8% had their A rating decrease 13% had their B rating increase – 1% had their B rating decease – Cleco Tie Lines 11% had their A rating increase – 49% had their A rating decrease 19% had their B rating increase – 28% had their B rating decrease Refer to the SPP models for specific line ratings

Facility Rating Changes Questions ?

Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

Model Review New Substations in Regional models New 69KV Transmission Line N-1 ACCC Results

Model Review New Transmission Line and Substations in 2011 Regional models Barker’s Corner Youngsville Mansfield Compressor Clarence – Maurice 69KV Line

LAGN : (2011) Barkers Corner 230KV Substation (moving load from other subs) Model Review New Substations in Regional models

Model Review New Substations in Regional models CLECO : (2011) Mansfield Compressor 230KV Substation (Serving projected area load growth )

ENTERGY : (2011) Youngsville 138KV Substation (Moves load off of 69KV System) Model Review New Substations in Regional models

Model Review New 69KV Transmission Line in Regional models Cleco : (2011) Clarence – Maurice 69KV Line

SPP 2011 Series Model ACCC Results Unmitigated Thermal Overloads Champagne – Plaisance 138KV: 120%  Contingency: Cocodrie – Ville Platte 230KV  Models: Summer/Winter 2013, 2017 & 2022  Limiting element resides outside of the Cleco Control Area  Will be monitored in subsequent years

SPP 2011 Series Model ACCC Results Unmitigated Long Range Low Bus Voltages Oakdale & Pine Prairie 138KV : 0.89PU  Contingency: Coughlin – Pine Prairie 138KV  Model: Summer 2022  Long Range Mitigation Plan considers adding capacitor banks at Pine Prairie Plaisance 138KV : 0.885PU  Contingency: Coughlin – Plaisance 138KV  Model: Summer 2022  Will monitor this voltage in future years

Model Review Questions ?

Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

Stakeholder Business Chance for Stakeholders to bring issues up for discussion

Final Questions?