West Texas Transmission Update

1
West TexasTransmission Update

• Project No. 25819 - Workshop 2 - October 21, 2002

2
Transmission SystemWind Power Projects
Oncor Transmission System - Wind Power Projects
Proposed Sweetwater 400 MW Oncor Interconnection
LGE/FPL Energy Culbertson County 65
MW Interconnected with LCRA
Trent Mesa (AEP) Nolan County 150
MW Interconnected with Oncor November 2001
Proposed Wind Project 240 MW Oncor Interconnection
Big Spring 35 MW Interconnected with Oncor 1998
Proposed Orion Project Culbertson County 175
MW LCRA Interconnection
Rio Pecos Projects 800 MW AEP/LCRA Interconnection
Noelke Hill Wind Ranch 240 MW To be
interconnected with AEP
3
Transmission System

• Constraint Mitigation Projects October
  2002 ERCOT Report to PUC
• Complete/Near Complete

West/East Constraint Graham to Jacksboro
In-Service December 2002
Northeast Constraint Monticello to Anna Switch
Line In-Service December 2002
West/East Constraint Morgan Creek-Red Creek-
Comanche Switch In- Service December 2002

• Other
• ERCOT Transmission Constraints
• San Miguel-Pawnee 345 kV
• Centerville-McCree 345 kV
• White Point 345 kV Sw St
• Cedar Bayou-N.Belt-THW 345 kV Upgrades
• Other 69/138 kV System Upgrades

South/North Constraint Limestone to Watermill
Line (Energized - May 2001)
4
Transmission System

• Constraint Mitigation Projects October
  2002 ERCOT Report to PUC
• ERCOT Recommended, Under Development

Paris - Anna Switch 345 KV Line
Venus-Liggett 345 kV Line

• Other
• ERCOT Transmission Constraints
• Pawnee-Coleto Creek 345 kV
• Edinburg-Bates-McAllen 345 kV
• McAllen-Brownsville-La Palma 345 kV
• Other CAP/69/138 kV System Upgrades

5
Transmission SystemWind-Related Projects

• Odessa EHV - Upton Switch - Spraberry
• Partnering with LCRA
• Moving forward with Design Procurement
• Morgan Creek - Red Creek - Comanche 345 kV
• Oncor portion completed
• Graham - Jacksboro 345 kV
• In-Service December 2002
• Jacksboro - W. Denton 345 kV
• In-service December 2005
• Eskota - S. Abilene 138 kV Reconductor
• 2003 (coordinated w/ AEP)

6
Transmission SystemTransfer-Related Projects

• Other West to East Related Projects
• Big Spring SS-Big Spring W 138 kV Reconductor
• Ackerly Vealmoor-Ackerly 69 kV Reconductor
• Big Spring SS-Cosden 138 kV Reconductor
• Brownwood-Bangs 69 kV to 138 kV Conversion
• (coordinated w/ AEP)
• Odessa EHV-Glenhaven 138 kV Reconductor
• Odessa EHV-TI Tap 138 kV Reconductor

7
Transmission System

• Constraint Mitigation Projects October
  2002 ERCOT Report to PUC
• Planning Group Review, Under Development

Jacksboro-West Denton 345 kV Line
Jacksboro-Willow Creek-Parker 345 kV Upgrade
West Denton to N.W. Carrollton 345 kV Line
Anna-Collin- NW Carrollton 345 kV Upgrade

• Other
• ERCOT Transmission Constraints
• Salem-Bryan/TNP 345 kV
• Clear Springs-Zorn-Harris Branch-Gabriel-Salado
  345 kV
• Cuero-Holman 345 kV
• Coleto Creek-Cuero 345 kV
• San Miguel-Laredo 345 kV
• Laredo-Bates-Edinburgh 345 kV
• Red Creek-Comanche 345 kV 2nd
• Twin Buttes-McCamey 345 kV
• Comanche-Killeen 345 kV
• Whitney-Concorde 345 kV
• Twin Oak-Lake Creek 345 kV
• Other 69/138 kV System Upgrades

Watermill-Cedar Hill 345 kV Line (2nd ckt)
8
Transmission SystemPublicly Announced Merchant
Plants
Lamar Power Project (FPL Energy)
00INR0008 Paris 1,000 MW CO July 2000
York Research 01INR0032 Winkler County 80 MW -
Wind
Tenaska 03INR0012 Pittsburg County, OK 1224
MW Switchable
Tractebel 02INR0009 Wise County 700 MW
Proposed Sweetwater 400 MW Oncor Interconnection
Orion 01INR0028 Culbertson County 175 MW - Wind
FPL Energy 01INR0007 Forney 1758 MW
Ennis-Tractebel II 03INR0003 Ennis 700 MW
Tractebel Power Company 01INR0008 Ennis 350 MW CO
May 2002
Odessa Ector Power (TIE) 01INR0026 Odessa 1,032
MW CO July 2001
Tenaska 01INR0019 Rusk County 850 MW CO July
2001 Switchable
Trent Mesa (AEP) 01INR0038 Nolan County 150 MW -
Wind CO November 2001
Newport 02INR0020 Anderson Co. 1800 MW
Midlothian Energy Limited Partnership
(ANP) 00INR0012 02INR0008 Midlothian 1500 MW CO
October 2004
AES Wolf Hollow 01INR0015 Hood County 730 MW
STEAG 04INR0006 Nacogdoches 954 MW
KEY BLUE -
Interconnection Completed GREEN - Interconnect
Agreement Executed BLACK - Proposed CO-
Commercial Operation
Freestone Power 01INR0009 Fairfield 1060 MW CO
July 2002