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Texas-New Mexico Power & CenterPoint Energy Alvin 345/138 kV Tie Project TAC – 01/04/2007

Texas-New Mexico Power & CenterPoint Energy Alvin 345/138 kV Tie Project TAC – 01/04/2007. Description of Project - 2007. Build 345/138 kV station and loop PH Robinson to Oasis 345 kV line into this station Loop existing Hastings to Alvin 138 kV line into new station

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Texas-New Mexico Power & CenterPoint Energy Alvin 345/138 kV Tie Project TAC – 01/04/2007

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  1. Texas-New Mexico Power & CenterPoint EnergyAlvin 345/138 kV Tie ProjectTAC – 01/04/2007

  2. Description of Project - 2007 • Build 345/138 kV station and loop PH Robinson to Oasis 345 kV line into this station • Loop existing Hastings to Alvin 138 kV line into new station • Rebuild this line from new station to Hastings • Rebuild Hastings to Friendswood 138 kV line • Cost $19.4 M (2006 dollars)

  3. Associated Long Term Projects – 2010+ • Rebuild South Shore to P.H. Robinson 138 kV line • Rebuild Friendswood to Seminole 138 kV line • Cost $5.1 M (2006 dollars)

  4. Projects Needed for Reliability • Generation re-dispatch will not be able to relieve post-contingency loading during peak load by 2007 • Occurs with single and multiple line outages

  5. Options Considered • TNMP considered eight options • ERCOT studied the two least expensive of TNMP’s eight options in depth • Recommended Project is the least expensive option considering the long term (2015) needs of the area

  6. Stakeholder Review • The Stakeholder review period for this project was held in August 2006 • There were no dissenting comments on this package of projects and TNMP resolved all questions

  7. ERCOT Support for the Project ERCOT supports the need for this project, as described, and will be requesting that it be endorsed by the Board

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