1

FERC 890 1st Quarter Stakeholder Meeting for Transmission Planning

Denver, COMarch 6, 2009

8:30 a.m. – 11:30 a.m.

2

WELCOME

3

PSCo Planning Process

4

Planning Process

A. CalendarB. Methodology / Criterion C. ReportingD. Regulatory Interaction

A. Colorado Rule 3206B. CPCN’s with Colorado PUC

5

Planning Calendar 2009May JunJan Feb Mar Apr Aug SepJul Oct Nov

5 year capital budget studies

CCPG Long Range

Dec

SB100 Studies

CCPG4/23/09

CCPG8/19/09-8/20/09

CCPG12/16/09

FERC 8903/6/09

FERC 89012/10/09

Resource Plan

5 year budget approved

SB100, CPCN Filing

WestConnect

SB100 BiannualFiling

WestConnect Annual Meeting 1/14/09

WestConnect Annual Stakeholder Meeting8/20/09

Generation Interconnect , Load Interconnect & Transmission Service Studies

10 year plan completed

6

Transmission Map

7

Planning Study Process Prepare Study Models

Utilize PSCo Base Case Preparation Process Determine Appropriate WECC Base Cases as basis for Study Verify Study Years, System Conditions, Demand Levels are appropriate

Model projected transfers Model appropriate regional loading Include existing and planned facilities Include Reactive Power resources as appropriate

Studies Include effects of existing and planned protective systems as appropriate Include effects of existing and planned control devices including load tap changers,

switched shunt devices, and generation control as appropriate Include planned or maintenance outages of equipment

Methodology Assess performance to meet TPL-001 (N-1) and TPL-002 (N-1) requirements Assess performance to meet TPL-003 (N-2) and TPL-004 (exploratory) as appropriate

Develop Recommendations for System Upgrades

8

Methodology

AnalysesPowerflow (Static)Dynamic (Transient and Voltage Stability)

SoftwareGE PSLFSiemens/PTI PSS/E

ConditionsSystem Intact (N-0)Single Contingencies (N-1) of All Regional ElementsSelect N-2 Contingencies

LoadingRecent Load ForecastsGenerally Peak SummerSensitivities with Peak Winter and Lighter Loading

9

Methodology - Criteria

NERC Standards Table 1 TPL-001, 002, 003, 004

TPL – (001 thru 004) – WECC – 1 – CR ─ System Performance Criteria (Formerly NERC/WECC Criteria) WECC Disturbance-Performance Table of Allowable Effects

on Other Systems

Other

10

Reporting – Annual 2009Self Certification Forms NERC/WECC January

Colorado Long Range Planning Group (10 year plan)

CCPG January

Study Program Survey WECC February

Annual Progress Report WECC March 1

FERC 715 WECC/FERC March 10

State of the Interconnected System WECC April

Rule 3206 CPUC April 30

Voltage Stability Summary WECC December

CCPG (Voltage Coordination guidelines)

CCPG December

11

Reporting - Postings

Tariff Studieshttp://www.rmao.com/wtpp/PSCO_Studies.html

FERC 890 Informationhttp://www.oatioasis.com/psco/index.html

SB07-100http://www.rmao.com/wtpp/SB100.html

High Plains Expresshttp://www.rmao.com/wtpp/HPX_Studies.html

WestConnecthttp://www.westconnect.com/

12

FERC 890 Attachment R Update

13

2008 Filing Responded October 15, 2008 Full Filing:

http://www.xcelenergy.com/SiteCollectionDocuments/docs/Xcel-Order890-Comp-Filing-Revision1.pdf

Other Information on OASIS: http://www.oatioasis.com/psco/index.html, under FERC 890

Including: Contacts:

http://www.oatioasis.com/PSCO/PSCOdocs/PSCo_Att_R_Points_of_Contact-10172008.pdf

Hyperlink List: http://www.oatioasis.com/PSCO/PSCOdocs/PSCo_Att_R_Hyperlinks-10172008.

pdf

Attachment R (K) only: http://www.oatioasis.com/PSCO/PSCOdocs/PSCo_Attachment_R_101508.pdf

Meeting Notices and Materials

14

PSCo 2008-2009 studies

15

Transmission Planning Studies

A. Near Term (Capital Budget) StudiesB. Tariff StudiesC. Senate Bill 07-100 D. High Plains ExpressE. 10-Year Plan

16

Annual Capital Budget Assessment

Conducted annually Project recommendations developed from

transmission reliability studies. Generally divided into regions:

Denver/Boulder Foothills Western Colorado Front Range (I-25 Corridor)

17

Planned Project Status ( 5 year plan)

A. Comanche - Daniels Park 345 kV Transmission Project

B. Chambers 230/115 kV Transmission intertie Project

C. Sandown - Leetsdale 115 kV ProjectD. Midway - Waterton 345 kV Transmission ProjectE. Niwot / Gunbarrel 230 kV Underground Line

18

Comanche - Daniels Park 345 kV Transmission Project

Sponsor PSCo

Description 125 miles of double-circuit 345 kV transmission line from the Comanche Substation, near Pueblo, CO, to the Daniels Park Substation, south of Denver, CO.

Purpose Accommodate 750 MW of generation at the Comanche Station

Schedule 2009

19

Comanche - Daniels Park 345 kV Project

Midway

Comanche

Boone

230kV

115kV

Reader

Pueblo

FountainValley

West Station

Lamar

Portland

Burnt Mill

Monument

Palmer Lake

Castle Rock

Daniels Park

LEGEND

345kV

Airport

CSU

Canon West

Unit 3: 750 MW

ISD: May 2010

Kettle Creek

Cottonwood

Fuller

RDNixon

WatertonMarcy

To Tarryall

Generation

Hyde ParkAquila

Substation

Comanche – Daniels Park 345kV Project:125 miles of 345 kV double- circuit Transmission Line between Daniels Park and Comanche

Comanche – Daniels Park 345kV Project:Rebuild existing 230kV line to double - circuit

345kV - capable transmission between Midway and Daniels Park. Both circuits

operated at 230kV

20

Chambers 230/115 kV Transmission Intertie Project

Sponsor PSCo

Description A new Chambers Substation consisting of a 230/115 kV transformer. Four miles of new 230 kV double-circuit overhead transmission line interconnecting Tower, Chambers and Picadilly. One mile of 115 kV transmission line interconnecting Havana, Chambers and Fitzsimmons

Purpose Accommodates new generation added to the northeast Colorado area in the recent years. Links the outer 230 kV transmission belt in the northeast metro vicinity to the 115 network

Schedule 2010

21

Chambers 230/115 kV Transmission Intertie Project

4 miles of doubel-circuit 230 kV Transmission connecting Tower, Chambers and Picadilly

1 mile 115 kV Transmission line Connecting Havana, Chambers and Fitzsimmons

Chambers 230/115kV Transmission Intertie Project: A new Chambers substation, 230/115 kV transformation interconnecting the outer 230 TransmissionkV to the 115 kV network

22

Sandown - Leetsdale 115 kV Transmission Project

Sponsor PSCo

Description 5 miles of new 115 kV transmission between the existing Sandown and Leetsdale substations in Denver, CO

Purpose Provides additional transmission to alleviate loading on the Denver-metro area transmission

Schedule 2009

23

Sandown - Leetsdale 115 kV Transmission Project

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OldLowrey

StapletonRedevelopment

ADAMS COUNTYADAMS COUNTYADAMS COUNTYADAMS COUNTYADAMS COUNTYADAMS COUNTYADAMS COUNTYADAMS COUNTYADAMS COUNTY

DENVER COUNTYDENVER COUNTYDENVER COUNTYDENVER COUNTYDENVER COUNTYDENVER COUNTYDENVER COUNTYDENVER COUNTYDENVER COUNTY

Expo Park PondExpo Park PondExpo Park PondExpo Park PondExpo Park PondExpo Park PondExpo Park PondExpo Park PondExpo Park Pond

Huston LakeHuston LakeHuston LakeHuston LakeHuston LakeHuston LakeHuston LakeHuston LakeHuston Lake

Smith LakeSmith LakeSmith LakeSmith LakeSmith LakeSmith LakeSmith LakeSmith LakeSmith Lake

Windsor LakeWindsor LakeWindsor LakeWindsor LakeWindsor LakeWindsor LakeWindsor LakeWindsor LakeWindsor Lake

Bluff LakeBluff LakeBluff LakeBluff LakeBluff LakeBluff LakeBluff LakeBluff LakeBluff Lake

Duck LakeDuck LakeDuck LakeDuck LakeDuck LakeDuck LakeDuck LakeDuck LakeDuck Lake

City Park LakeCity Park LakeCity Park LakeCity Park LakeCity Park LakeCity Park LakeCity Park LakeCity Park LakeCity Park Lake

South South South South South South South South South Platte RiverPlatte RiverPlatte RiverPlatte RiverPlatte RiverPlatte RiverPlatte RiverPlatte RiverPlatte River

Mira Vista Golf Mira Vista Golf Mira Vista Golf Mira Vista Golf Mira Vista Golf Mira Vista Golf Mira Vista Golf Mira Vista Golf Mira Vista Golf Course PondCourse PondCourse PondCourse PondCourse PondCourse PondCourse PondCourse PondCourse Pond

Windsor Gardens Windsor Gardens Windsor Gardens Windsor Gardens Windsor Gardens Windsor Gardens Windsor Gardens Windsor Gardens Windsor Gardens Cc PondCc PondCc PondCc PondCc PondCc PondCc PondCc PondCc Pond

Park Hill Golf Park Hill Golf Park Hill Golf Park Hill Golf Park Hill Golf Park Hill Golf Park Hill Golf Park Hill Golf Park Hill Golf Course PondCourse PondCourse PondCourse PondCourse PondCourse PondCourse PondCourse PondCourse Pond

Fairview Elmen Fairview Elmen Fairview Elmen Fairview Elmen Fairview Elmen Fairview Elmen Fairview Elmen Fairview Elmen Fairview Elmen School PondSchool PondSchool PondSchool PondSchool PondSchool PondSchool PondSchool PondSchool Pond

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E 7th AveE 7th Avenue PkwyE 7th Pl

E 8th Ave

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E Archer PlE Bayaud Ave

E Cedar Ave

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E Exposition Ave E Gill Pl

E K

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E Stapleton Dr NE Stapleton Dr S

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Ela

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W 40th AveW 41st Ave

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W 4th Ave

W 5th AveW 5th Pl

W 6th AveW 6th Avenue Fwy E

W 7th Ave

W Ada Pl

W Alameda Ave

W Alaska Pl

W Archer PlW Bayaud Ave

W Byers Pl

W Center Ave

W Dick Conner Ave

W Ellsworth Ave

W Exposition AveW Gill Pl

W Holden Pl

W Howard Pl

W Maple Ave

W Myrtle Pl

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Airport ParkAirport ParkAirport ParkAirport ParkAirport ParkAirport ParkAirport ParkAirport ParkAirport Park

Alexander ParkAlexander ParkAlexander ParkAlexander ParkAlexander ParkAlexander ParkAlexander ParkAlexander ParkAlexander Park

Alpine ParkAlpine ParkAlpine ParkAlpine ParkAlpine ParkAlpine ParkAlpine ParkAlpine ParkAlpine Park

American American American American American American American American American Legion ParkLegion ParkLegion ParkLegion ParkLegion ParkLegion ParkLegion ParkLegion ParkLegion Park

Anderson ParkAnderson ParkAnderson ParkAnderson ParkAnderson ParkAnderson ParkAnderson ParkAnderson ParkAnderson Park

Arcadia ParkArcadia ParkArcadia ParkArcadia ParkArcadia ParkArcadia ParkArcadia ParkArcadia ParkArcadia Park

Arnold ParkArnold ParkArnold ParkArnold ParkArnold ParkArnold ParkArnold ParkArnold ParkArnold Park

Avalon ParkAvalon ParkAvalon ParkAvalon ParkAvalon ParkAvalon ParkAvalon ParkAvalon ParkAvalon Park

Avery ParkAvery ParkAvery ParkAvery ParkAvery ParkAvery ParkAvery ParkAvery ParkAvery Park

Babcock ParkBabcock ParkBabcock ParkBabcock ParkBabcock ParkBabcock ParkBabcock ParkBabcock ParkBabcock Park

Bay View ParkBay View ParkBay View ParkBay View ParkBay View ParkBay View ParkBay View ParkBay View ParkBay View Park

Bear Creek Bear Creek Bear Creek Bear Creek Bear Creek Bear Creek Bear Creek Bear Creek Bear Creek ParkParkParkParkParkParkParkParkPark

Bicentennial Bicentennial Bicentennial Bicentennial Bicentennial Bicentennial Bicentennial Bicentennial Bicentennial ParkParkParkParkParkParkParkParkPark

Bluff ParkBluff ParkBluff ParkBluff ParkBluff ParkBluff ParkBluff ParkBluff ParkBluff Park

Bradley ParkBradley ParkBradley ParkBradley ParkBradley ParkBradley ParkBradley ParkBradley ParkBradley Park

Brentwood ParkBrentwood ParkBrentwood ParkBrentwood ParkBrentwood ParkBrentwood ParkBrentwood ParkBrentwood ParkBrentwood Park

Brookside ParkBrookside ParkBrookside ParkBrookside ParkBrookside ParkBrookside ParkBrookside ParkBrookside ParkBrookside Park

Bryant ParkBryant ParkBryant ParkBryant ParkBryant ParkBryant ParkBryant ParkBryant ParkBryant Park

Buena Buena Buena Buena Buena Buena Buena Buena Buena Vista ParkVista ParkVista ParkVista ParkVista ParkVista ParkVista ParkVista ParkVista Park

Burns ParkBurns ParkBurns ParkBurns ParkBurns ParkBurns ParkBurns ParkBurns ParkBurns Park

Carpenter ParkCarpenter ParkCarpenter ParkCarpenter ParkCarpenter ParkCarpenter ParkCarpenter ParkCarpenter ParkCarpenter Park

Castle ParkCastle ParkCastle ParkCastle ParkCastle ParkCastle ParkCastle ParkCastle ParkCastle Park

Castle Rock Castle Rock Castle Rock Castle Rock Castle Rock Castle Rock Castle Rock Castle Rock Castle Rock State ParkState ParkState ParkState ParkState ParkState ParkState ParkState ParkState Park

Centennial Centennial Centennial Centennial Centennial Centennial Centennial Centennial Centennial ParkParkParkParkParkParkParkParkPark

Central ParkCentral ParkCentral ParkCentral ParkCentral ParkCentral ParkCentral ParkCentral ParkCentral Park

City ParkCity ParkCity ParkCity ParkCity ParkCity ParkCity ParkCity ParkCity Park

Civic Civic Civic Civic Civic Civic Civic Civic Civic Center ParkCenter ParkCenter ParkCenter ParkCenter ParkCenter ParkCenter ParkCenter ParkCenter Park

Clear Lake Clear Lake Clear Lake Clear Lake Clear Lake Clear Lake Clear Lake Clear Lake Clear Lake State ParkState ParkState ParkState ParkState ParkState ParkState ParkState ParkState Park

Clinton ParkClinton ParkClinton ParkClinton ParkClinton ParkClinton ParkClinton ParkClinton ParkClinton Park

Community ParkCommunity ParkCommunity ParkCommunity ParkCommunity ParkCommunity ParkCommunity ParkCommunity ParkCommunity Park

County County County County County County County County County FairgroundsFairgroundsFairgroundsFairgroundsFairgroundsFairgroundsFairgroundsFairgroundsFairgrounds

County ParkCounty ParkCounty ParkCounty ParkCounty ParkCounty ParkCounty ParkCounty ParkCounty Park

Crawford ParkCrawford ParkCrawford ParkCrawford ParkCrawford ParkCrawford ParkCrawford ParkCrawford ParkCrawford Park

Crawford Crawford Crawford Crawford Crawford Crawford Crawford Crawford Crawford State ParkState ParkState ParkState ParkState ParkState ParkState ParkState ParkState Park

Crow Crow Crow Crow Crow Crow Crow Crow Crow Valley ParkValley ParkValley ParkValley ParkValley ParkValley ParkValley ParkValley ParkValley Park

Cutler ParkCutler ParkCutler ParkCutler ParkCutler ParkCutler ParkCutler ParkCutler ParkCutler Park

Davidson ParkDavidson ParkDavidson ParkDavidson ParkDavidson ParkDavidson ParkDavidson ParkDavidson ParkDavidson Park

Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek ParkParkParkParkParkParkParkParkPark

Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek Deer Creek State ParkState ParkState ParkState ParkState ParkState ParkState ParkState ParkState Park

Discovery ParkDiscovery ParkDiscovery ParkDiscovery ParkDiscovery ParkDiscovery ParkDiscovery ParkDiscovery ParkDiscovery Park

Drake ParkDrake ParkDrake ParkDrake ParkDrake ParkDrake ParkDrake ParkDrake ParkDrake Park

E ParkE ParkE ParkE ParkE ParkE ParkE ParkE ParkE Park

East Lake ParkEast Lake ParkEast Lake ParkEast Lake ParkEast Lake ParkEast Lake ParkEast Lake ParkEast Lake ParkEast Lake Park

Echo Lake ParkEcho Lake ParkEcho Lake ParkEcho Lake ParkEcho Lake ParkEcho Lake ParkEcho Lake ParkEcho Lake ParkEcho Lake Park

Eisenhower Eisenhower Eisenhower Eisenhower Eisenhower Eisenhower Eisenhower Eisenhower Eisenhower ParkParkParkParkParkParkParkParkPark

Englewood ParkEnglewood ParkEnglewood ParkEnglewood ParkEnglewood ParkEnglewood ParkEnglewood ParkEnglewood ParkEnglewood Park

Erwin ParkErwin ParkErwin ParkErwin ParkErwin ParkErwin ParkErwin ParkErwin ParkErwin Park

Evergreen ParkEvergreen ParkEvergreen ParkEvergreen ParkEvergreen ParkEvergreen ParkEvergreen ParkEvergreen ParkEvergreen Park

Fairview ParkFairview ParkFairview ParkFairview ParkFairview ParkFairview ParkFairview ParkFairview ParkFairview Park

Fauntleroy Fauntleroy Fauntleroy Fauntleroy Fauntleroy Fauntleroy Fauntleroy Fauntleroy Fauntleroy ParkParkParkParkParkParkParkParkPark

Forest ParkForest ParkForest ParkForest ParkForest ParkForest ParkForest ParkForest ParkForest Park

Freedom ParkFreedom ParkFreedom ParkFreedom ParkFreedom ParkFreedom ParkFreedom ParkFreedom ParkFreedom Park

Frontier ParkFrontier ParkFrontier ParkFrontier ParkFrontier ParkFrontier ParkFrontier ParkFrontier ParkFrontier Park

Garfield ParkGarfield ParkGarfield ParkGarfield ParkGarfield ParkGarfield ParkGarfield ParkGarfield ParkGarfield Park

Graham ParkGraham ParkGraham ParkGraham ParkGraham ParkGraham ParkGraham ParkGraham ParkGraham Park

Grant ParkGrant ParkGrant ParkGrant ParkGrant ParkGrant ParkGrant ParkGrant ParkGrant Park

Greenbelt ParkGreenbelt ParkGreenbelt ParkGreenbelt ParkGreenbelt ParkGreenbelt ParkGreenbelt ParkGreenbelt ParkGreenbelt Park

Greenway ParkGreenway ParkGreenway ParkGreenway ParkGreenway ParkGreenway ParkGreenway ParkGreenway ParkGreenway Park

Greenwood ParkGreenwood ParkGreenwood ParkGreenwood ParkGreenwood ParkGreenwood ParkGreenwood ParkGreenwood ParkGreenwood Park

Hancock ParkHancock ParkHancock ParkHancock ParkHancock ParkHancock ParkHancock ParkHancock ParkHancock Park

Harding ParkHarding ParkHarding ParkHarding ParkHarding ParkHarding ParkHarding ParkHarding ParkHarding Park

Harmon Harmon Harmon Harmon Harmon Harmon Harmon Harmon Harmon Field ParkField ParkField ParkField ParkField ParkField ParkField ParkField ParkField Park

Harrison ParkHarrison ParkHarrison ParkHarrison ParkHarrison ParkHarrison ParkHarrison ParkHarrison ParkHarrison Park

Heartwell ParkHeartwell ParkHeartwell ParkHeartwell ParkHeartwell ParkHeartwell ParkHeartwell ParkHeartwell ParkHeartwell Park

Henry Woods Henry Woods Henry Woods Henry Woods Henry Woods Henry Woods Henry Woods Henry Woods Henry Woods State ParkState ParkState ParkState ParkState ParkState ParkState ParkState ParkState Park

Heritage ParkHeritage ParkHeritage ParkHeritage ParkHeritage ParkHeritage ParkHeritage ParkHeritage ParkHeritage Park

Hidden Hidden Hidden Hidden Hidden Hidden Hidden Hidden Hidden Valley ParkValley ParkValley ParkValley ParkValley ParkValley ParkValley ParkValley ParkValley Park

Highland ParkHighland ParkHighland ParkHighland ParkHighland ParkHighland ParkHighland ParkHighland ParkHighland Park

Hillcrest ParkHillcrest ParkHillcrest ParkHillcrest ParkHillcrest ParkHillcrest ParkHillcrest ParkHillcrest ParkHillcrest Park

Holbrook ParkHolbrook ParkHolbrook ParkHolbrook ParkHolbrook ParkHolbrook ParkHolbrook ParkHolbrook ParkHolbrook Park

Holiday ParkHoliday ParkHoliday ParkHoliday ParkHoliday ParkHoliday ParkHoliday ParkHoliday ParkHoliday Park

Jackson ParkJackson ParkJackson ParkJackson ParkJackson ParkJackson ParkJackson ParkJackson ParkJackson Park

Jaycee ParkJaycee ParkJaycee ParkJaycee ParkJaycee ParkJaycee ParkJaycee ParkJaycee ParkJaycee Park

Jefferson ParkJefferson ParkJefferson ParkJefferson ParkJefferson ParkJefferson ParkJefferson ParkJefferson ParkJefferson Park

Jordan ParkJordan ParkJordan ParkJordan ParkJordan ParkJordan ParkJordan ParkJordan ParkJordan Park

Kelly ParkKelly ParkKelly ParkKelly ParkKelly ParkKelly ParkKelly ParkKelly ParkKelly Park

Kennedy ParkKennedy ParkKennedy ParkKennedy ParkKennedy ParkKennedy ParkKennedy ParkKennedy ParkKennedy Park

Kimball ParkKimball ParkKimball ParkKimball ParkKimball ParkKimball ParkKimball ParkKimball ParkKimball Park

Kiwanis ParkKiwanis ParkKiwanis ParkKiwanis ParkKiwanis ParkKiwanis ParkKiwanis ParkKiwanis ParkKiwanis Park

Lake ParkLake ParkLake ParkLake ParkLake ParkLake ParkLake ParkLake ParkLake Park

Lake View ParkLake View ParkLake View ParkLake View ParkLake View ParkLake View ParkLake View ParkLake View ParkLake View Park

Lakeside ParkLakeside ParkLakeside ParkLakeside ParkLakeside ParkLakeside ParkLakeside ParkLakeside ParkLakeside Park

Lakeview ParkLakeview ParkLakeview ParkLakeview ParkLakeview ParkLakeview ParkLakeview ParkLakeview ParkLakeview Park

Lakewood ParkLakewood ParkLakewood ParkLakewood ParkLakewood ParkLakewood ParkLakewood ParkLakewood ParkLakewood Park

Lawrence ParkLawrence ParkLawrence ParkLawrence ParkLawrence ParkLawrence ParkLawrence ParkLawrence ParkLawrence Park

Liberty ParkLiberty ParkLiberty ParkLiberty ParkLiberty ParkLiberty ParkLiberty ParkLiberty ParkLiberty Park

Lincoln ParkLincoln ParkLincoln ParkLincoln ParkLincoln ParkLincoln ParkLincoln ParkLincoln ParkLincoln Park

Lindsay ParkLindsay ParkLindsay ParkLindsay ParkLindsay ParkLindsay ParkLindsay ParkLindsay ParkLindsay Park

Lions ParkLions ParkLions ParkLions ParkLions ParkLions ParkLions ParkLions ParkLions Park

Little Little Little Little Little Little Little Little Little League ParkLeague ParkLeague ParkLeague ParkLeague ParkLeague ParkLeague ParkLeague ParkLeague Park

Magnolia ParkMagnolia ParkMagnolia ParkMagnolia ParkMagnolia ParkMagnolia ParkMagnolia ParkMagnolia ParkMagnolia Park

Marine ParkMarine ParkMarine ParkMarine ParkMarine ParkMarine ParkMarine ParkMarine ParkMarine Park

Maxwell ParkMaxwell ParkMaxwell ParkMaxwell ParkMaxwell ParkMaxwell ParkMaxwell ParkMaxwell ParkMaxwell Park

Mckinley ParkMckinley ParkMckinley ParkMckinley ParkMckinley ParkMckinley ParkMckinley ParkMckinley ParkMckinley Park

Memorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial Park

Mill Creek Mill Creek Mill Creek Mill Creek Mill Creek Mill Creek Mill Creek Mill Creek Mill Creek ParkParkParkParkParkParkParkParkPark

Miller ParkMiller ParkMiller ParkMiller ParkMiller ParkMiller ParkMiller ParkMiller ParkMiller Park

Mitchell ParkMitchell ParkMitchell ParkMitchell ParkMitchell ParkMitchell ParkMitchell ParkMitchell ParkMitchell Park

Municipal ParkMunicipal ParkMunicipal ParkMunicipal ParkMunicipal ParkMunicipal ParkMunicipal ParkMunicipal ParkMunicipal Park

National National National National National National National National National Park-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-Forest

Nichols ParkNichols ParkNichols ParkNichols ParkNichols ParkNichols ParkNichols ParkNichols ParkNichols Park

North North North North North North North North North Side ParkSide ParkSide ParkSide ParkSide ParkSide ParkSide ParkSide ParkSide Park

Northwest ParkNorthwest ParkNorthwest ParkNorthwest ParkNorthwest ParkNorthwest ParkNorthwest ParkNorthwest ParkNorthwest Park

Oak ParkOak ParkOak ParkOak ParkOak ParkOak ParkOak ParkOak ParkOak Park

Overlook ParkOverlook ParkOverlook ParkOverlook ParkOverlook ParkOverlook ParkOverlook ParkOverlook ParkOverlook Park

Palisades ParkPalisades ParkPalisades ParkPalisades ParkPalisades ParkPalisades ParkPalisades ParkPalisades ParkPalisades Park

ParkParkParkParkParkParkParkParkPark

Peck ParkPeck ParkPeck ParkPeck ParkPeck ParkPeck ParkPeck ParkPeck ParkPeck Park

Pierce ParkPierce ParkPierce ParkPierce ParkPierce ParkPierce ParkPierce ParkPierce ParkPierce Park

Pine Lake ParkPine Lake ParkPine Lake ParkPine Lake ParkPine Lake ParkPine Lake ParkPine Lake ParkPine Lake ParkPine Lake Park

Pioneer ParkPioneer ParkPioneer ParkPioneer ParkPioneer ParkPioneer ParkPioneer ParkPioneer ParkPioneer Park

Porter ParkPorter ParkPorter ParkPorter ParkPorter ParkPorter ParkPorter ParkPorter ParkPorter Park

Progress ParkProgress ParkProgress ParkProgress ParkProgress ParkProgress ParkProgress ParkProgress ParkProgress Park

Prospect ParkProspect ParkProspect ParkProspect ParkProspect ParkProspect ParkProspect ParkProspect ParkProspect Park

Ravine ParkRavine ParkRavine ParkRavine ParkRavine ParkRavine ParkRavine ParkRavine ParkRavine Park

Redwood ParkRedwood ParkRedwood ParkRedwood ParkRedwood ParkRedwood ParkRedwood ParkRedwood ParkRedwood Park

River ParkRiver ParkRiver ParkRiver ParkRiver ParkRiver ParkRiver ParkRiver ParkRiver Park

Riverfront Riverfront Riverfront Riverfront Riverfront Riverfront Riverfront Riverfront Riverfront ParkParkParkParkParkParkParkParkPark

Riverside ParkRiverside ParkRiverside ParkRiverside ParkRiverside ParkRiverside ParkRiverside ParkRiverside ParkRiverside Park

Riverview ParkRiverview ParkRiverview ParkRiverview ParkRiverview ParkRiverview ParkRiverview ParkRiverview ParkRiverview Park

Roanoke ParkRoanoke ParkRoanoke ParkRoanoke ParkRoanoke ParkRoanoke ParkRoanoke ParkRoanoke ParkRoanoke Park

Rock Island Rock Island Rock Island Rock Island Rock Island Rock Island Rock Island Rock Island Rock Island State ParkState ParkState ParkState ParkState ParkState ParkState ParkState ParkState Park

Rodeo ParkRodeo ParkRodeo ParkRodeo ParkRodeo ParkRodeo ParkRodeo ParkRodeo ParkRodeo Park

Rogers ParkRogers ParkRogers ParkRogers ParkRogers ParkRogers ParkRogers ParkRogers ParkRogers Park

Roosevelt ParkRoosevelt ParkRoosevelt ParkRoosevelt ParkRoosevelt ParkRoosevelt ParkRoosevelt ParkRoosevelt ParkRoosevelt Park

Rotary ParkRotary ParkRotary ParkRotary ParkRotary ParkRotary ParkRotary ParkRotary ParkRotary Park

Sand Creek Sand Creek Sand Creek Sand Creek Sand Creek Sand Creek Sand Creek Sand Creek Sand Creek ParkParkParkParkParkParkParkParkPark

Sands ParkSands ParkSands ParkSands ParkSands ParkSands ParkSands ParkSands ParkSands Park

Shawnee ParkShawnee ParkShawnee ParkShawnee ParkShawnee ParkShawnee ParkShawnee ParkShawnee ParkShawnee Park

Simpson ParkSimpson ParkSimpson ParkSimpson ParkSimpson ParkSimpson ParkSimpson ParkSimpson ParkSimpson Park

Smith ParkSmith ParkSmith ParkSmith ParkSmith ParkSmith ParkSmith ParkSmith ParkSmith Park

South ParkSouth ParkSouth ParkSouth ParkSouth ParkSouth ParkSouth ParkSouth ParkSouth Park

South South South South South South South South South Side ParkSide ParkSide ParkSide ParkSide ParkSide ParkSide ParkSide ParkSide Park

Spring Spring Spring Spring Spring Spring Spring Spring Spring Lake ParkLake ParkLake ParkLake ParkLake ParkLake ParkLake ParkLake ParkLake Park

Stanton ParkStanton ParkStanton ParkStanton ParkStanton ParkStanton ParkStanton ParkStanton ParkStanton Park

State State State State State State State State State Park-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-ForestPark-Forest

Stauffer ParkStauffer ParkStauffer ParkStauffer ParkStauffer ParkStauffer ParkStauffer ParkStauffer ParkStauffer Park

Stewart ParkStewart ParkStewart ParkStewart ParkStewart ParkStewart ParkStewart ParkStewart ParkStewart Park

Sunnyside ParkSunnyside ParkSunnyside ParkSunnyside ParkSunnyside ParkSunnyside ParkSunnyside ParkSunnyside ParkSunnyside Park

Sunrise ParkSunrise ParkSunrise ParkSunrise ParkSunrise ParkSunrise ParkSunrise ParkSunrise ParkSunrise Park

Sunset ParkSunset ParkSunset ParkSunset ParkSunset ParkSunset ParkSunset ParkSunset ParkSunset Park

Sweetwater Sweetwater Sweetwater Sweetwater Sweetwater Sweetwater Sweetwater Sweetwater Sweetwater ParkParkParkParkParkParkParkParkPark

Swenson ParkSwenson ParkSwenson ParkSwenson ParkSwenson ParkSwenson ParkSwenson ParkSwenson ParkSwenson Park

Sylvan ParkSylvan ParkSylvan ParkSylvan ParkSylvan ParkSylvan ParkSylvan ParkSylvan ParkSylvan Park

Taylor ParkTaylor ParkTaylor ParkTaylor ParkTaylor ParkTaylor ParkTaylor ParkTaylor ParkTaylor Park

Terrace ParkTerrace ParkTerrace ParkTerrace ParkTerrace ParkTerrace ParkTerrace ParkTerrace ParkTerrace Park

Thompson ParkThompson ParkThompson ParkThompson ParkThompson ParkThompson ParkThompson ParkThompson ParkThompson Park

Todd ParkTodd ParkTodd ParkTodd ParkTodd ParkTodd ParkTodd ParkTodd ParkTodd Park

Town ParkTown ParkTown ParkTown ParkTown ParkTown ParkTown ParkTown ParkTown Park

Triangle ParkTriangle ParkTriangle ParkTriangle ParkTriangle ParkTriangle ParkTriangle ParkTriangle ParkTriangle Park

Veterans Veterans Veterans Veterans Veterans Veterans Veterans Veterans Veterans Memorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial ParkMemorial Park

Veterans ParkVeterans ParkVeterans ParkVeterans ParkVeterans ParkVeterans ParkVeterans ParkVeterans ParkVeterans Park

Victory ParkVictory ParkVictory ParkVictory ParkVictory ParkVictory ParkVictory ParkVictory ParkVictory Park

Village ParkVillage ParkVillage ParkVillage ParkVillage ParkVillage ParkVillage ParkVillage ParkVillage Park

Washington Washington Washington Washington Washington Washington Washington Washington Washington ParkParkParkParkParkParkParkParkPark

Waterworks Waterworks Waterworks Waterworks Waterworks Waterworks Waterworks Waterworks Waterworks ParkParkParkParkParkParkParkParkPark

Westside ParkWestside ParkWestside ParkWestside ParkWestside ParkWestside ParkWestside ParkWestside ParkWestside Park

Westwood ParkWestwood ParkWestwood ParkWestwood ParkWestwood ParkWestwood ParkWestwood ParkWestwood ParkWestwood Park

Wildwood ParkWildwood ParkWildwood ParkWildwood ParkWildwood ParkWildwood ParkWildwood ParkWildwood ParkWildwood Park

Wilson ParkWilson ParkWilson ParkWilson ParkWilson ParkWilson ParkWilson ParkWilson ParkWilson Park

Woodland ParkWoodland ParkWoodland ParkWoodland ParkWoodland ParkWoodland ParkWoodland ParkWoodland ParkWoodland Park

Wright ParkWright ParkWright ParkWright ParkWright ParkWright ParkWright ParkWright ParkWright Park

Roydal eRoydal eRoydal eRoydal eRoydal eRoydal eRoydal eRoydal eRoydal e

Gl endal eGl endal eGl endal eGl endal eGl endal eGl endal eGl endal eGl endal eGl endal e

DenverDenverDenverDenverDenverDenverDenverDenverDenver

Leetsdale SubLeetsdale SubLeetsdale SubLeetsdale SubLeetsdale SubLeetsdale SubLeetsdale SubLeetsdale SubLeetsdale Sub

M onroe SubM onroe SubM onroe SubM onroe SubM onroe SubM onroe SubM onroe SubM onroe SubM onroe Sub

Harrison SubHarrison SubHarrison SubHarrison SubHarrison SubHarrison SubHarrison SubHarrison SubHarrison Sub

California SubCalifornia SubCalifornia SubCalifornia SubCalifornia SubCalifornia SubCalifornia SubCalifornia SubCalifornia Sub

Capitol Hill SubCapitol Hill SubCapitol Hill SubCapitol Hill SubCapitol Hill SubCapitol Hill SubCapitol Hill SubCapitol Hill SubCapitol Hill SubElati SubElati SubElati SubElati SubElati SubElati SubElati SubElati SubElati Sub

North SubNorth SubNorth SubNorth SubNorth SubNorth SubNorth SubNorth SubNorth Sub

Dakota SubDakota SubDakota SubDakota SubDakota SubDakota SubDakota SubDakota SubDakota Sub

Sandown SubSandown SubSandown SubSandown SubSandown SubSandown SubSandown SubSandown SubSandown Sub

Denver Terminal SubDenver Terminal SubDenver Terminal SubDenver Terminal SubDenver Terminal SubDenver Terminal SubDenver Terminal SubDenver Terminal SubDenver Terminal Sub

North SubNorth SubNorth SubNorth SubNorth SubNorth SubNorth SubNorth SubNorth Sub

Argo SubArgo SubArgo SubArgo SubArgo SubArgo SubArgo SubArgo SubArgo Sub

LaCombe SubLaCombe SubLaCombe SubLaCombe SubLaCombe SubLaCombe SubLaCombe SubLaCombe SubLaCombe Sub

Barker Future SubBarker Future SubBarker Future SubBarker Future SubBarker Future SubBarker Future SubBarker Future SubBarker Future SubBarker Future Sub

Z u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M WZ u n i P S C o 1 0 1 M W

24

Midway - Waterton 345 kV Transmission Project

Sponsor PSCo

Description 82 miles of 345 kV transmission line between the Midway Substation, near Colorado Springs and the Waterton Substation, southwest of the Denver metro area

Purpose Proposed in accordance with Senate Bill 07-100 to facilitate potential generation resources in Energy Resource Zones 3, 4 and 5. Alleviates potential overloads on the Colorado Springs Utilities network

Schedule 2011

25

Midway - Waterton 345 kV Transmission Project

Comanche – Daniels Park 345 kV Project: Operated at 345 kV.

Midway

ComancheGeneration

Boone

To Tarryall

Daniels Park

230 kV

345 kV

Waterton

Marcy

Fuller

Midway – Waterton 345 kV Project:Operate eastern circuit of double-circuit

transmission at 345 kV. Western circuit remains operated at 230 kV.

Midway – Waterton 345 kV Project: Add 345/230 kV autotransformer at Midway

Midway – Waterton 345 kV Project:Rebuild existing 230 kV line to double-circuit

345 kV-capable transmission between Daniels Park and Waterton. South circuit operates at

345 kV. North circuit operates at 230 kV.

Midway – Waterton 345 kV Project:Add 345/230 kV autotransformer and replace

both 230/115 kV autotransformers at Waterton

Generation

Substation

26

Niwot / Gunbarrel 230 kV Underground Line

Sponsor PSCo

Description Construct 2.3 miles of 230 kV Underground transmission line between the Niwot and Gunbarrel Substations. Install a new 230/13.8 kV transformer at Gunbarrel Substation

Purpose Provide an additional delivery point for IBM load

Schedule 2011

27

Niwot/Gunbarrel 230 kV Underground Line

230/13.8 kV

Gunbarrel

Niwot

Leggett 230 kV

Isabelle 230 kV

230/13.8 kV

Niwot/Gunbarrel 230kV Underground Line Project: New 2.3 miles of 230kV Line from Gunbarrel to Niwot

New 230kV Undergroun Line

New 230/13.8kV Transformer

New 230/13.8kV Transformer

230 kV Bus

13.8 kV Bus

13.8 kV Bus

230 kV Bus

Existing system

Existing 230 kV Underground Line

28

FERC Generation Interconnection Process

29

Generation Interconnection Process

FERC Orders 2003 and 2006 Order 2003 for Large Generators

Greater than 20MW Large Generator Interconnection Process (LGIP) Large Generator Interconnection Agent (LGIA) Applies to all generation technologies

Order 2006 for Small Generators Less than or equal to 20MW Small Generator Interconnection Process (SGIP) Small Generator Interconnection Agent (SGIA) Applies to all generation technologies

30

LGI Process

Feasibility Study $10,000 deposit Preliminary determination of interconnection and delivery facilities Study Cost based on actual costs Feasibility schedule: 6-9 months

System Impact Study $50,000 deposit Proof of Site Control required Transient stability of system is studied Study Cost based on actual costs SIS schedule: 9-12 months

Facilities Study $100,000 deposit Detailed engineering design and cost estimates Study cost based on actual costs Facilities Schedule: 2-4 months Study results become the basis for the LGIA

31

Generation Interconnection Process

PSCo Interconnection QueueTotal Requests since 2003: 81Total MW: 23,970Requests by Generation Type:

Wind: 52 Solar 10 Coal: 6 Gas: 12 Biomass: 1

32

Active FERC Generation Interconnection Studies (2006-2009)

Arapahoe – 587 MW Boone – 500 MW WindFort St. Vrain – 300 MW Wind; 256 MW Combined CycleGreen Valley – 400 MW WindHartsel – 100 MW SolarWalsenburg – 300 MW WindComanche – 700 MW WindKeensburg – 250 MW WindAult – 1600 MW WindJackson Fuller – 601 MW WindMissile Site – 800 MW Wind; 270 MW GasLamar – 2686 MW WindSan Luis Valley – 150 MW Wind; 1730 MW SolarPawnee – 1170 MW Combined Cycle; 2820 MW Wind

33

Senate Bill 07–100 Projects

34

Senate Bill 07-100

Upon recommendations by the 2006 Transmission Task Force on Reliable Electricity Infrastructure, the Sixty Sixth General Assembly passed Senate Bill 07-100. Under SB 07-100, PSCo must meet the following requirements:

Designate “Energy Resource Zones (ERZ)” Develop plans for the construction or expansion of transmission

facilities necessary to deliver electric power consistent with the timing of the development of beneficial energy resources located in or near such zones

Consider how transmission can be provided to encourage local ownership of renewable energy facilities

Submit proposed plans, designations, and applications for certificates of public convenience and necessity to the commission for simultaneous review

35

SB-100 Overall Transmission Plan

Zone 4Zone 5

Zone 1

Zone 2

Zone 3

VilasCalumet

Missile Site

Ault

Cherokee

Pawnee

Smoky Hill

Daniels Park

ComancheLamar

345kV

230kV

36

Proposed Senate Bill 100 Projects

Project Description Generation injection

Energy Zone

Priority

Pawnee – Daniels Park– 345 kV line

Second circuit 345 kV line in energy zone 1.

300-500 MW 1 Medium -1

Ault to Cherokee 230 kV

New 230kV line in energy Zone 1.

300-600 MW 1 Medium -2

Missile Site 345/230 kV switching station on Pawnee to Daniel Park line in energy zone 2.

200-500 MW 2 High-2

Lamar to Comanche 345 kV line and Lamar to Missile Site 345 kV

New 345kV lines to access energyzone 3.

800-1000 MW

3 High -3

Lamar to Vilas 345 kV line

New 345kV line in energy Zone 3 to access wind rich area.

3 Low

San Luis – Calumet – Comanche Line

Double circuit 230 kV line( SLV to Calumet) and double 345 kv line( Calumet to Comanche).

600-1000 MW

4 and 5 High -1

Total

generation values are non simultaneous

37

Proposed SB07-100 Projects

A. Pawnee – Smoky Hill 345 kV Transmission ProjectB. San Luis – Calumet – Comanche 230/345 kV LineC. Missile Site 345 kV Switching StationD. Lamar – Front Range 345 kV Transmission Project E. Pawnee – Daniels Park 345 kV LineF. Ault – Cherokee 230 kV Line Addition G. Lamar – Vilas 230/345 kV Line

38

Pawnee - Smoky Hill 345 kV Transmission Project

Sponsor PSCo

Description Build approximately 95 miles of 345 kV transmission line from the Pawnee Substation to the Smoky Hill Substation

Purpose Accommodates 500 MW of potential resource additions near Pawnee. Complies with Colorado Senate Bill 07-100 requirements by achieving transmission access to Energy Resource Zone 1

Schedule 2013

Status CPCN approved by CPUC February 2009

39

San Luis - Calumet - Comanche 230/345 kV Line

Sponsor PSCo

Description Build 95 miles of double-circuit 230 kV transmission line from the San Luis Valley Substation to a new Calumet Substation, near Walsenburg, Colorado. From the Calumet Substation, construct 45 miles of double-circuit 345 kV transmission line to the Comanche Substation. Joint project between PSCo and TSG&T

Purpose • Accommodates interconnection of 600-1000 MW of resources at or near the San Luis Valley Substation and/or the Calumet Substation

• Long term solution for Energy Resource Zones 4 & 5

Schedule 2013

40

Missile Site 345 kV Switching Station

Sponsor PSCo

Description A new 345 kV switching station near Deer Trail, Colorado

Purpose • Complies with Senate Bill 07-100 as an injection point for potential energy resources in Energy Resource Zone 2

• Accommodates up to 200-500 MW of new generation resources by intersecting the Pawnee - Smoky Hill 345kV transmission line

41

Lamar - Front Range 345 kV Transmission Project

Sponsor PSCo

Description Construct 120 miles of 345 kV transmission line from the Lamar Substation to the Comanche Substation, and 210 miles of 345 kV transmission line from the Lamar Substation to the Missile Site Substation

Purpose • A Colorado Senate Bill 07-100 project designed to transport wind generation from the Baca County (Energy Zone 3) to the Denver Metro Area• Provides transfer capability of 800 – 1000 MW

42

Pawnee - Daniels Park 345 kV Line

Sponsor PSCo

Description Build a 345 kV transmission line from the Pawnee Substation to the Daniels Park Substation

Purpose • Complies with SB07-100 to facilitate potential generation resources in Energy Zones 1 and 2

• Accommodates 300-500 MW of resources interconnecting at or near the Pawnee Substation and/or the Missile Site Substation

43

Ault - Cherokee 230 kV Line Addition

Sponsor PSCo

Description 85 miles of 230 kV transmission line from the Ault Substation to the Cherokee Substation

Purpose • Comply with the Colorado Senate Bill 07-100• Accommodates 300 – 600 MW of potential energy resources from Energy Resource Zone 1• Increases TOT 7 transfer capability

44

Lamar - Vilas 230/345 kV Line

Sponsor PSCo

Description 57 miles of 345/230 kV transmission line) from PSCo’s Lamar Substation to Tri State Generation and Transmission Association’s Vilas Substation

Purpose A Senate Bill 100 project designed to transport wind generation from Energy Resource Zone 3

45

Senate Bill 07-100 Schedule

2008 – 2009 Process March 4, 2008: Kickoff Meeting April – July 2008: Transmission Study Groups November 24, 2008: Submit Transmission Plans December 2008: Commission Workshop February 27, 2009. CPCN approved for Pawnee to

Smoky 345 kV 2009 CPCN Applications October 31, 2009: Submit Biennial plan

http://www.rmao.com/wtpp/SB100.html

46

High Plains Express project

47

High Plains Express Initiative

Two 1,280 mile long, 500kV, AC lines through WY, CO, NM, and AZ

3,500 – 4,000 MW of transmission capacity

Cost approximately $5.13 billion

Utilizes Transmission Lines Proposed in the HPX Initiative

48

HPX Status

MOU for Stage 2 Executed Organizational Structure DefinedExecutive CommitteeWork Groups: Commercial, Siting, Technical,

CommunicationStage 2 Scheduled Completion in 2010

49

10-Year Plan

• 5 Year Capital Budget for Transmission Asset Management• FERC - Generation Interconnection Studies• SB -100 Transmission Plans to Energy Resource Zones• 10 Year Colorado Long Range Planning Group (CLRPG)

Studies • High Plains Express (HPX) Initiative • Westconnect 10 year Plan Posted ( February 2009)• PSCo internal 10 year Plan will be posted April 2009

50

Stakeholder Opportunity for comment into study scope for 10

year assessment

51

Regional (WECC) Update

52

Regional (WECC)

Planning Coordination Committee Focus on Reliability Technical Studies Subcommittee System Review Work Group

Transmission Expansion Planning Policy Committee Focus on Economic Assessments

53

2009TEN-YEAR POWER FLOW AND STABILITY DATA COMPILATION SCHEDULE

CASE DATE DATAREQUESTMAILED

DATE DATA DUE TO

SUB COORDDATE L&R

INFO DUE TOSUB COORD

DATE DATADUE TO AREA

COORD

DATE DATADUE TOSTAFF

STAFF SEND

CASE FOR REVIEW

DATE COMMENTS

DUE TO AREA

COORD

DATE AREA COORDINATOR

COMMENTSDUE TO STAFF

STAFFFINALIZE

DATE

2008 HS4-OP 07/25/08 08/08/08 08/15/08 09/19/08 10/03/08 10/17/08 10/24/08 11/05/08

2008 LS1-OP 07/25/08 08/22/08 08/29/08 10/03/08 10/17/08 10/31/08 11/07/08 11/19/08

2014 HS2-S 09/19/08 10/03/08 10/10/08 11/14/08 11/28/08 12/05/08 12/12/08 12/24/08

2018 HS1 10/24/08 11/07/08 11/14/08 12/19/08 01/02/09 01/09/09 01/16/09 01/28/09

2009-10 HW2-OP 11/28/08 12/12/08 12/19/08 01/23/09 02/06/09 02/20/09 02/27/09 03/11/09

2009-10 LW1-OP 11/28/08 12/26/08 01/02/09 02/06/09 02/20/09 03/06/09 03/13/09 03/25/09

2010 HSP1-OP 01/23/09 02/06/09 02/13/09 03/20/09 04/03/09 04/17/09 04/24/09 05/06/09

2018 HSP1-S 03/06/09 03/20/09 03/27/09 05/01/09 05/15/09 05/22/09 05/29/09 06/10/09

2014 LA1-S 04/10/09 04/24/09 05/01/09 06/05/09 06/19/09 06/26/09 07/03/09 07/15/09

2014 HS3-S 05/15/09 05/29/09 06/05/09 07/10/09 07/24/09 07/31/09 08/07/09 08/19/09

2015 HS2 06/19/09 07/03/09 07/10/09 08/14/09 08/28/09 09/04/09 09/11/09 09/23/09

2010 HS3-OP 07/24/09 08/07/09 08/14/09 09/18/09 10/02/09 10/16/09 10/23/09 11/04/09

2010 LS1-OP 07/24/09 08/21/09 08/28/09 10/02/09 10/16/09 10/30/09 11/06/09 11/18/09

2014-15 HW2 09/18/09 10/02/09 10/09/09 11/13/09 11/27/09 12/04/09 12/11/09 12/23/09

2020 HS1 10/23/09 11/06/09 11/13/09 12/18/09 01/01/10 01/08/10 01/15/10 01/27/10

2008 cases

54

Sub regional Update

55

CCPG

Forum for joint transmission planning Recognized WECC Sub-RegionThree Open Meetings/YearApril, August, December (Joint with SWAT/Sierra)

Denver TSGT OfficesMultiple Subcommittee and Work Group meetings throughout the yearOpen to All Interested StakeholdersMeeting Notices/Materials Posted at: www.westconnect.com

56

CCPG Activities

Long Range (10-Year) PlanningNERC ComplianceSenate Bill 100Sub-subregional StudiesWECC Data CoordinationRegional Project ParticipationCharter

57

NextNext CCPG meeting

April 23, 2009; Denver TSGT office

Notices/Materials Posted at: www.westconnect.com

ContactsThomas Green303-571-7223thomas.green@xcelenergy.com

OrJared Griffiths (Co-chair)Phone 970-461-7603Email jgriffit@wapa.gov

58

CCPG Long Range Planning Group (CLRGPG) Assessment

Purpose:Develop 10 Year Transmission Plans (2018 Models)Consider RPS & up to 30% Renewable Re-evaluate the Eastern Plains Transmission Project Annual

assessments include:Assessment

Load Flow AnalysisFour Scenarios

59

Long Range ScenariosLong Range Scenarios

A.Colorado resources suggested by Utility resource planners

• Meets or exceeds Colorado’s Renewable Portfolio Standard• “Stressed” from South to North

B.Displace some northern CO resource with WY• Injected into CO via the proposed Wyoming-Colorado

Intertie Project• Stressed North to South

C.Up To 5% of the capacity in Colorado’s Wind GDA’s

D.2000 MW from Colorado’s Central Solar Power GDA’s

60

Scaled Scenario C (Total 2917 MW new)

410 MW

55 MW

732 MW

650 MW

Corner Point

165 MW

110 MW

55 MW

630 MW110 MW

230kV345kV500kV

61

Scenario C – Topology SummaryScenario C – Topology Summary

Lamar area to: Comanche 345/500kV (SB100) Big Sandy – Missile Site 345/500kV (SB100) Burlington 345/500kV

Burlington - Wray 230kV Pawnee - Smoky Hill – Daniels Park 345kV (SB100) Ault – Cherokee 230kV (SB100)

62

Subregional (WestConnect)

ColoradoCoordinated

PlanningGroup

SouthwestArea

Transmission

CCPGCCPG

SWATSWAT

SIERRASIERRANew Area ?

CCPG, SWAT and SIERRA act as WestConnect technical planning work groups for WestConnect planning area•Coordinate Base Cases for use by all study participants

•Define subregional study plans, provide study resources, and perform studies

•Provide forum for coordination and peer review of planning studies and 10-year plans

63

Status of WestConnectSubregional Planning Process

2008 Planning Cycle posted on web site 2013 & 2018 Adequacy Assessments( Posted)

Coordinated with CCPG 10-Year Study Plan and Report (Posted)

Workshop in OctoberReport in JanuaryCurrently preparing 2009 scope of work

Websitehttp://www.westconnect.com/

64

Transmission customers update loads, resources and demand

responses

65

Study Request Review

66

http://www.oatioasis.com/PSCO/PSCOdocs/PSCO_Attachment_R_Econ_Study_Request-Form_10Oct08.pdf

67

Stakeholder Questions & Comments

68

4th Quarter meeting Dec 10, 2009

69

Adjourn