SPS 10-Year Transmission Plan/20-Year Strategic Vision · Russel Altus Shamrock Whiteface Snyder...

36
SPS 10-Year Transmission Plan/20-Year Strategic Vision May 2009 This report contains transmission planning data that may be conceptual in nature and is subject to change. The transmission projects listed may change scope, in-service dates or may not be constructed.

Transcript of SPS 10-Year Transmission Plan/20-Year Strategic Vision · Russel Altus Shamrock Whiteface Snyder...

SPS 10-YearTransmission Plan/20-Year Strategic Vision

May 2009This report contains transmission planning data that may be conceptual in nature and is subject to change. The transmission projects listed may change scope, in-service dates or may not be constructed.

2

Purpose

Summarize various planning efforts across SPP and SPSDocument 10 year plan based on current snapshotsMeet FERC Order 890 requirementsProvide roadmap that evolves to changing business and regulatory environment

3

Key Points to Take Away

SPS transmission system has expansive projectsForecasts showing increasing load growth Customer demand may vary due to economic conditions, but transmission system demand will likely continue to increase due to renewable energy production

4

Key Messages10-Year Plan Key Messages• Plan is primarily load serving and reliability based• Plan developed in coordination with SPP STEP processes• Five year capital budget created with ten year construction

identified • No speculative transmission proposed for wind energy

development• ~17,000 MW of generation interconnection requests in SPP

queue20-Year Vision Key Messages• 20 Year Vision is a conceptual plan• Three scenarios evaluated, focused on load serving • 345 kV Transmission construction expected, not 765 kV• No major transmission initiatives ( SPP EHV Plan, etc.)

5

SPS 10-Year Transmission Plan/20-Year Vision

OverviewSPS System CharacteristicsTransmission Planning Zones10 Year Transmission Plan• By Zone

20 Year Transmission Vision

6

SPS System CharacteristicsSystem Control Center -Amarillo, TexasRTO/RRO - Southwest Power Pool (SPP)Transmission Line Miles -6,336 miles (345kV-69kV ) 304 Transmission and distribution stations served2008 Summer Peak Load -5,502 MWGenerators Served/ Connected - 47Wind/Solar Interconnection Points/MW - 7/920 10 Wholesale Customers

14 Interconnected Major UtilitiesEnergy Sales Class Breakdown• 12% residential, 47 %

commercial/industrial, 39% wholesale

• Remainder public authorities and lighting

Service territory - 52,000 square milesBoundary of three electrical grids: East, West & ERCOT

7

SPS Service Territory

N E W M E X IC O

C O L O R A D O

O K L A H O M A

S p rin g e r

T u c u m c a ri

R o s e b u d

J a l

H o b b s

P e a rlL e e

O c h o a

H e re fo rd

B la c kw a te r

L o v ing to n

L a s V e g a s

B la c k L a ke

L ib e ra l

G uym o n B e a v e r

P e rry to nW o o d w a rd

S tra ffo rd

D a lh a rt S p e a rm a nP ring le

M o o re C o .

R iv e rv ie w

B o rg e r P a m p a

R a n d a llB u s h la n d

C a n yo n

S w is h e r

M u le s h o e

L ittle f ie ld

H a leC o .

T u c o

H o llis

R u s s e ll A ltu s

S h a m ro c k

W h ite fa c e

S n yd e r

E lk C ity

F t. S u p p ly

G le n w o o d

W o o d rin g

H e n n e s s e y

O ke e n e

A lv a

W e a th e rfo rdJ c t. E l R e n o

N o rth w e s t

C im a rro n

C o rnv ille

C lin to n

L a w to n B a s e lin eD u n c a n

C o m a n c h e

V e rno nO k la u n io n

D e nv e rC ity

M id la n d

Y o a ku m

S e a g ra v e s

A rte s ia

M a lja m a r

E u n ic e

T e a g u e

S un d o w n

L u b b o c k E .

L u b b o c k S o .

O K L A H O M A C IT Y

M U S T A N G

L U B B O C K

J O N E S

P L A N T X

C U N N IN G H A M

M A D D O X

C O M A N C H E

A N A D A R K OS O U T H W E S T E R N

M O O R E L A N D

T O L K

H o b a rt

P A U L IN E

C o x

S m ithD e a f

S u lp hu r S p rin g s

T e rry

T a o s

E d d y L e a C o .

G ra s s la n d

B o rd e n

L yn n G ra h a m

S a y re

B o w e rs

K irb y

G ra p e v in e

M U S T A N G

P o tte r

S o 4 th

D U K E

S e v e nR iv e rs

P e c o s

T E X A S

F lo yd

C ro s b y

S . L ib e ra lE lkh a rt

H A R R IN G T O N& N IC H O L S

K A N S A S

A M A R IL L O

C A R L S B A D

R O S W E L L

C L O V IS

P O R T A L E S

M a jo r G e n e ra tio n

M a jo r L o a d A re a sG e n e ra tio n b y O th e rs

T e x a s C o .

3 4 5 k V T ra n s m is s io n2 3 0 k V T ra n s m is s io n1 1 5 -1 6 1 k V T ra n s m is s io n

N

S

EW

8

NEW M EXICO

COLORADO

OKLAHOMA

Springer

Tucumcari

Rosebud

HOBBS

PearlLee

Ochoa

Hereford

Blackwater HVDC

Lovington

Las Vegas

Black Lake

Liberal

Guymon Beaver

PerrytonW oodward

Strafford

Dalhart SpearmanPringle

Moore Co.

Riverview

Borger Pampa

RandallBushland

Canyon

Swisher

Muleshoe

Littlefield

HaleCo.

Tuco

Hollis

Russell Altus

Shamrock

W hiteface

Snyder

Elk City

Ft. Supply

Glenwood

W oodring

Hennessey

Okeene

Alva

W eatherfordJct. El Reno

Northwest

Cimarron

Cornville

Clinton

Lawton BaselineDuncan

Comanche

VernonOklaunion

DenverCity

Yoakum

Seagraves

Artesia

Maljamar

Eunice

Teague

Sundown

Lubbock E.

Lubbock So.

OKLAHOMA CITY

MUSTANG

LUBBOCK

JONES

PLANT X

CUNNINGHAMMADDOX

COMANCHE

ANADARKOSOUTHW ESTERN

MOORELAND

HOLCOMB

LA JUNTA

TOLK

Lamar

Hobart

PAULINE

Cox

SmithDeaf

Sulphur Springs

Terry

Taos

Eddy Co.

Lea Co.

Grassland

Borden

Lynn Graham

W alsenburg

BurroCanyon

Sayre

Bowers

Kirby

Grapevine

(2004)

MUSTANG

Potter

So4th

DUKE

SevenRivers

Pecos

TEXAS

Floyd

Crosby

Finney

S. LiberalElkhart

HARRINGTONNICHOLS

KANSAS

AMARILLO

CARLSBAD

ROSW ELL

CLOVIS

PORTALES

LINE ITUCO - OKLAUNION

345kV

LINE DGRAPEVINE - ELK CITY

230 kV

LINE HEDDY CO.

HVDC

LINE EBLACKWATER

HVDC

LINE CTEXAS CO. - LIBERAL

115 kV

LINE GKIRBY - SHAMROCK

115 kV

LINE AFINNEY - LAMAR HVDC

345 kV

LINE BFINNEY - HOLCOMB

345 kV

Texas Co.

Jericho

LINE FKIRBY - JERICHO

115 kV

Line A FINNEY - LAMAR HVDC 345 kVLine B FINNEY - HOLCOMB 345 kVLine C TEXAS CO. - LIBERAL 115 kVLine D GRAPEVINE - ELK CITY 230 kVLine E BLACKW ATER HVDCLine F KIRBY - JERICHO 115 kVLine G KIRBY - SHAMROCK 115 kVLine H EDDY CO. HVDCLine I TUCO - OKLAUNION 345kV

SPS TIE-LINE SUMMARY

N

S

EW

345kV Transmission230kV Transmission115-161kV Transmission

Tie Lines, Interconnections

9

Planning ProcessSPP STEP• Annual Process• Focus is overall reliability of entire SPP region• SPP conducts the studies for 10 years out• SPP invites participation in process• Study synopsis

– SPP uses various models to test system under different flow conditions

– Purpose is to determine upgrades to support increasing loads, sold transmission service

– Results are “Notices to Construct” (“NTC”) to Transmission Owners each February - letters are on the SPP website

10

Planning Process

SPS FERC 890 - Local Planning Process • Primarily aimed at 69 KV systems• Sub-regional load serving focus• Minimum of one annual meeting per year• All stakeholders invited to participate• Integrates with SPP’s FERC Order 890 process

SPP EHV Planning Process• Long-range 20-year horizon 345 kV, 765 kV plans• Coordinated with other RRCs and regions

11

Transmission

Planning DriversLoad Growth RateRegional Economic ConditionsWholesale and Retail Load Interconnections• Heavy industrial and commercial development• Currently 20 requests in study queue, 200-300 MW

SPP STEP Planning ProcessTransmission Service Studies - SPP Aggregate Study processSPP Generator Interconnection Queue - 17,000 MW, mostly windRegulatory/Environmental Considerations• State Mandates• Wind Rich Area

12

Transmission

Planning DriversStakeholder Concerns• Cooperatives - GSEC, NM Cooperatives• Munis - WTMPA• Neighboring Utilities - Caprock, WECC (PNM, EPE,

PSCo), AEPW, Sunflower• IPPs - wind developers and fossil developers

–PURPA and QFs - large issue!

13

Transmission

Planning DriversLoad Forecasts

SPS BA Coincident Peaks (to August 5, 2008)

5500

50485168

4835

4673

433843004400450046004700480049005000510052005300540055005600

2003

2004

2005

2006

2007

2008

MW

14

Transmission

Planning DriversLoad Forecasts

SPS BA Forecast Peak, MW

4,000

4,500

5,000

5,500

6,000

6,500

7,000

7,500

8,000

2008 2010 2012 2014 2016 2018 2020

Peak Load (MW)

New Forecast Loads Used in Studies Previous Forecast ($70 oil)

15

ImplicationsProject delay – CCN process may not go forward if transmission needs changeForecast Rebound – if project is delayed, load picks up, the transmission is behind scheduleLower forecast – slower build-out, not necessarily canceled projectsLoad forecast – may not be the most significant driver as compared to generation interconnections and transmission service sold by SPP

16

Transmission Planning Drivers

Generation Interconnections

17

Planning CriteriaSPP CriteriaSPS Criteria - filed as part of FERC 715• Minimally restrictive• Primary focus in interconnection reliability

NERC Planning Standards

18

Planning Zones

19

Zone 1, 2, and 3 Projects

Texas North Upgrades

W.P

.EW.T.U.

Amarillo

Liberal EnglewoodElkhart

GateKnowles

Forgan

Beaver

Tyrone

Hooker

Hardesty

Optima

Guymon

Goodwell

Keyes

Boise City

Texhoma

Dalhart

Stratford

Cactus

Sunray

Dumas

Gruver

Spearman

Perryton

Booker Darrouzett Follett

Higgins

Canadian

Channing

Vega

Adrian

Fritch Borger

Stinnett

Sanford

Panhandle

White Deer

Claude

Groom

Pampa

Mclean

Miami

Mobeetie

Wheller

Shamrock

Valero

T.C.

T. C.

T.C.

T.C.

T.C.

T.C.

T.C.

T.C.

T.C.

T. C.

T.C.

T.C.

T.C.

T.C.

T.C.

T.C.

T. C.

T.C.

Ochiltree Co.Interchange

N.P.N. P.N.P.

N.P.N.P.N.P.

N.P. N.P.

N.P.

N.P.

N. P.

N.P.

SpearmanInterchange

N.P.

N.P.

PringleInterchange

Moore Co.Interchange

Sherman Co.Interchange

DalhartInterchange

DallamInterchange

Etter

Dumas19th St .

Potter Co.Interchange

Bushland Interchange Randall Co.

Interchange

Coulter Interchange

Amarillo South

East Plant

Nichols Sta.

Harrington Sta

.

Kirby Sw. Sta.

Grapevine Interchange

Bowers Interchange

Kingsmill Interchange

G.B. G.B.

N. P.

Gray Co . Interchange

Grave Substation

Riverview

Excell Sub

ColeInterchange

OKLAHOMA

KANSAS

TEXAS

R.B.

TC- Whiting Texas Co. Interchange

Wildorado

.

Hutchinson Co. Interchange

Blackhawk

N

S

EWLEGEND

230 kV LINE115 kV LINE69 kV LINE

SUBSTATION or INTERCHANGE

Texas

Amarillo

HitchlandInterchange

20

Zone 1, 2 and 3 ProjectsYear Project Descriptions Issues Cost $

Hitchland Interchange: New 345/230/115 kV interchange.Hitchland - Texas Co 115 kV lines: 2 lines, intercepting existing 115 kV linesHitchland - Spearman 115 kV line: 1 line, intercepting existing lineHitchland - Perryton 115 kV line: 1 line, intercepting existing line

Provide new source to the Texas and Oklahoma Panhandle area; to serve load growth during system intact conditions and contingencies.

NW Intg - Channing-Dallam 115kV Line: Construct 230 kV operated at 115 kV

Provide relief to growing reliability problems on 69 kV serving Channing and Tascosa subs

2011 Texas North Upgrade

Hitchland - Moore Co 230 kV line: 230 kV line to existing Moore Co Interchange

Provide second 230 kV source to Moore Co. Area and provides voltage support for Potter-Moore 230 kV Line contingency

Hitchland - Pringle 230 kV line: 230 kV line to existing Pringle Interchange

Provide another 230 kV source to Pringle Sub to enhance reliability in the area.

93.9M2010 Texas North Upgrade

21

Zone 1, 2 and 3 ProjectsYear Project Descriptions Issues Cost $

2009 Nichols Auto Upgrade

Change out 150 MVA units (2) with 252 MVA units

Required for firm transmission service service for Mustang GT’s and Wildorado Wind.

6.2M

2010 Wheeler Project New 230/115 kV Interchange; new 115 kV line to Grave Substation; new 115/69 kV transformer and new distribution Sub

Required to serve addition wholesale and retail loads in E. Panhandle area. Area need stronger source - current transmission is only 69 kV.

9.1M

2011 Texas North Upgrade-Phase 2

Hitchland -Ochiltree 230 kV line. New 230 kV Line to Ochiltree Intg ( 230/115 kV) near Perryton

Provides source to developing load area which has insufficient transmission. Mitigate contingency overload and voltage problems.

8.5M

2016 S. Georgia Intg -Osage Switching Station 115kV line

Upgrade 115 kV Line ratings to 100 deg. C.

Provide system reinforcement for the Nichols-Amarillo South 230 kV line contingency. SPP compliance required project.

1.3M

2018 Van Buren Tap-Hastings –Northwest 69 kV Line re-conductor

Re-conductor existing 69kV line

Contingency overload based on current conductor rating. Needs larger conductor

2.4M

22

Zone 1, 2 and 3 ProjectsYear Project Descriptions Issues Cost $

2009 GSEC Deaf Smith #6

Install 3-way switch to serve new cooperative load

Coop adding new load near Hereford

0.3M

2010 GSEC Deaf Smith #24

Install 3-way switch to serve new cooperative load and 14.4 MVAr Cap Bank at Parmer Co

Cap bank will provide voltage support for the Curry Co. Interchange- Deaf Smith #20 115kV line segment contingency

0.9M

2010 Curry Co-Roosevelt Co. 115 kV line

Re-rate 115 kV Line from 90°C to 125 °C temp design.

Line upgrade will provide system reinforcement for outage of the 230/115kV auto at Oasis Intg.

0.2M

2010 North Clovis project

Upgrade from 69 kV to 115 kV service and upgrade Curry County line terminal

Prevents overload of Curry 115/69 KV autos by converting 69 kV dist transformers. Line terminal’s low rated equipment needed upgrade

0.8M

2016 Deaf Smith Co. Interchange

Upgrade existing 230/115 KV Auto-transformer #1 to 252 MVA

Provide system reinforcement for Deaf Smith Interchange Autotransformer #2 contingency.

3.5M

23

Zone 4 - Projects

HALECO.

FLOYDCO .

Plainview

Lockney

Floydada

Petersburg

LHE -Plainview

NorthPlainview

LHE-Finney

EastPlainviewPlainview City

WestPlainview

Westridge

South Plainview

CoxInterchange

LHE -Providence

AikenRural

LHE -Aiken

Irick

Barwise

LHE -Harmony

Floyd Co. Interchange

LHE -Petersburg

AllmonSPEC -Becton

LHE -Wilson &Ellen

LHE -Lone Star

LockneyRural

ToLHE -South

Plains

ToLHE -

Cedar Hill

South Floydada

27

70

Y76

70

Y74 V -07

Y77

Y96

Z -38

T -68

J-01

62

T-65

Z-36

ToBriscoe &

LHE - SouthPlains

N

S

EW

Aiken

Barwise

Lockney Tap

TexasLubbock

LEGEND

SPS 230 kVSPS 345 kV

SPS 115 kVSPS 69 kVREC 69 kVCounty Line

City Limits

REC or Municipal STATIONSPS STATION

207 State Highways

' SPEC ' South Plains Electric Cooperative, Inc.' LHE ' Lighthouse Electric Cooperative, Inc.

SPS Transmission Line Designation

' SEC ' Swisher Electric Cooperative, Inc.

J- 01

New 115 kV line

US Highways70

27 Interstate Highways

Cox – Floyd115 kV line

Floyd County 115/69 kV Auto

Upgrade

24

Zone 4 ProjectsYear Project Descriptions Issues Cost $

2008 WTMPA Transmission Service Request

Upgrade Floyd Co 115/69 kV from 40 MVA to 84 MVA and install 2nd 230/115 kV auto at Tuco

Provide 325 MW firm network transmission service for WTMPA customers/network upgrades required under SPP tariff.

5.0M

2008 Terry Co. Auto Upgrades

Upgrade both 115/69 kV autos to 84 MVA units

Provide N-1 contingency relief for the loss of the other transformer.

2.0M

2008 Cochran Co. Auto Upgrades

Upgrade both 115/69 kV autos to 84 MVA units

Provide N-1 contingency relief for the loss of the other transformer.

2.3M

2009 Cox-Floyd 115 kV line

Last of Crosby-Floyd Co upgrades

Final phase of Plainview-Floyd-Crosby upgrade project started in 2001 to mitigate system system intact and contingency problems on the south eastern most edge of the SPS system in Texas.

8.9M

2009 Hale County Intg. Auto Upgrade

Upgrade both 115/69 kV autos to 84 MVA units

Provide N-1 contingency relief for the loss of the other transformer.

1.7M

2009 Lubbock East Auto Upgrade

Upgrade both 115/69 kV autos to 84 MVA units

Provide N-1 contingency relief for the loss of the other transformer.

2.1M

25

Mustang Station

Willard

98

V80

LTG McConal

Z21

T2

Z46

T57

Y95

LWe

Jaybee

Seagraves Int.

Denver City Int.

Wasson Sitching

Sta.

ODC

Wasson Pump

San Andress

East Denver

City

ShellC3

Denver City

Shell #7

C2

Allred

El Paso

Shell CO2

BennettPhillips Pump

#1

Russell Pool

AmfracMid

American

K55

V54

V80

K20

Y99

Y98

Y86

Y98

T16

T13 Tenneco

Boardman

Flannagan

West Hobbs

Sw. Sta.

East Sanger

S. HobbsS. Hobbs

Taylor Sw. Sta.

MillenNE.

Hobbs

N. Hobbs

West Bender

Sanger Sw. Sta.

T14

T15

V54

K20

Gaines Co. Int.

Doss Int.

AHCO2SUB

T40T39

Monument

Cooper Ranch

Drinkard

Eunice

Seminole

Hobbs

Eunice

Lovington

ngham ion Maddox

Lea Co. Int

Lea Road

Ward

Seagraves

Moss

LTG-Seagraves

180

385

62

83

214

385

62 180

188

176

176

234

483

18 132

83

83

K49

Lea Co.Waits Sub.

NE

W M

EX

ICO

TE

XA

S

GAINES CO.

TER

O.

N

S

EW

HiggSwitching

MAPCO

Riley

V94

V53

LEGEND

230 kV LINE115 kV LINE

69 kV LINE

18

180

K49

US HIGHWAYSTATE ROAD

CIRCUIT ID

WATER / DRAINAGE

SUBSTATION or INTERCHANGE

TexasSeminole

Legacy Interchange

Project

NewSeminole

Interchange

Hobbs Plant

Mustang – Hobbs - Seminole Project

Zone 5 Projects

26

Zone 5 Projects

Year Project Descriptions Issues Cost $

2009 Yoakum County Intg.

Add second 230/115 150 MVA transformer

Provides relief of existing transformer overload due to line contingency in area.

1.9M

2010 and 2011

Mustang -Hobbs -Seminole Project

Construct 230 kV line from GSEC Mustang Plant- Seminole Intg. to Hobbs Plant. Install 2 230/115 kV autos at Seminole Intg. Re-terminate several 115 kV lines in and out of the 115 kV bus at Seminole

Provides load service for major Hess Corp. expansion project and network transmission service for Hobbs Generator

32.8M

2011 Legacy Intg Project

115/69 kV auto, convert 9.5 miles of 69 kV to 115 kV , construct ~ 3 miles of new 115 kV to connect station in to existing transmission.

Provides system reliability and reinforcement during intact and contingency conditions to developing oilfield loads in the Gaines Co area. Mitigates overload of Gaines co. transformer and 69 kV lines in that area.

7.6M

27

L E A

Eddy Co

Chaves Co

Hopi

White City

Navajo #3

Wherry Housing

Cottonwood

Price

Fiesta

Navajo-Malaga

Loving South

Potash Junction

PCASeven Rivers

Del Hi

Sand Dunes

WIPP

Livingston Ridge

NM Potash #2

Duval #2

IMC #2

IMC #3

Ochoa

Dexter

Whitten

Ward

Hobbs

Teague

Jal

Millen

Pearl

Zia

AMFRA

Tenne

Bo

RusPo

Arco BP-Willard

Hagerman (CVEC)

Lake Arthur (CVEC)

Lakewood (CVEC)

Orchard Park (CVEC)

Pecos

Waterfield

Carlsbad

LovingtonDenver

City

Tatum

Roswell City

Carlsbad

Atoka

Artesia

Roswell

NewMexico

Tex

Eagle Creek Project

Seven Rivers – Pecos – Potash

Project

LEGEND

230 kV LINE115 kV LINE69 kV LINE

K49CIRCUIT ID

SUBSTATION or INTERCHANGE

Carlsbad

New Mexico

N

S

EW

HobbsStation

T41

T83

Z22T23

V61

V21

V84

K52

V83

Z05

Z57

T62

T61

K60

K23T43Z56

V26

J02

K38

Z08

Z09 T26

T39

T40

K20V54

T13

T16

V98

Z03

K49

Zone 6, and 7 Projects

28

Zone 6 and 7 Projects

Year Project Descriptions Issues Cost $

2009 Eagle Creek Project

Construct new 115/69 kV interchange in Artesia, NM and re-terminate nearby Eddy Co - Seven Rivers 115 kV line at Eagle Creek. Re-terminate sources to Navajo refinery into this new station.

Provides network support for Artesia Intg that provides service to town and more reliable service to a large industrial customer.

14.6M

2010 Seven Rivers -Pecos -Potash Project

Construct 230 kV transmission from Seven Rivers - Pecos - Potash and install 230/115 kV auto at Pecos Intg.

Provides network transmission service for Hobbs Generator.

20.1M

29

Project Tracking

30

Questions ?

31

20-Year

Transmission Vision

Not a detailed plan, but a ‘vision’Three Scenarios• Scenario I - High Internal Renewables • Scenario II - High Resource Import• Scenario III - Minimum Load Growth

32

Base Scenario

Transmission Vision

+

Spearville - Commanche

Hitchland - Mooreland

Hitchland – East Amarillo

East Amarillo - Potter

Potter - Roosevelt

Roosevelt – Tolk - Tuco

Chaves - Crossroads

Crossroads - Hobbs

Hobbs – Midland – Borden

Legend345 kV to be constructed by 2018345 kV Base Scenario line additions345 kV 230 kV161 – 115 kV

Borden - Tuco

Crossroads - Tuco

East Amarillo - Tuco

Mooreland – NW Intg

Comanche - Mooreland

Comanche - Wichita

20 Year SPS Base Scenario

East Amarillo

Crossroads

Comanche

33

Scenario I

Transmission Vision

34

Scenario II

Transmission Vision

Legend345 kV to be constructed by 2018345 kV Scenario II line additions345 kV 230 kV161 – 115 kV

20 Year SPS Scenario II

Comanche

East Amarillo

Crossroads

Mooreland – NW Intg

Comanche - Mooreland

Comanche - Wichita

Spearville - Commanche

Hitchland - Mooreland

Hitchland – East Amarillo

East Amarillo - Potter

Potter - Roosevelt

Roosevelt – Tolk - Tuco

Chaves - Crossroads

Crossroads - Hobbs

Hobbs – Midland – Borden

Borden - Tuco

Crossroads - Tuco

East Amarillo - Tuco

East Amarillo – SW Station

35

Scenario III

Transmission VisionNo additional impacts beyond the Base Scenario expected• By 2028, only 100-150 MW would be

needed for a 0.25% growth rate• 345 KV Plan for Base Scenario likely

adequate

36

Questions ?