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HOUSTON AREA CONSTRAINT MITIGATION: PHASE II and TNP- BELL COUNTY PROJECT

HOUSTON AREA CONSTRAINT MITIGATION: PHASE II and TNP- BELL COUNTY PROJECT. Robert Lona, P.E. & Don Le ERCOT System Planning. CNP PROJECT JUSTIFICATION. CONCERNS ABOUT FUTURE NORTH – HOUSTON IMPORT CONSTRAINTS AFTER HACM PHASE 1(HILLJE SUB)

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HOUSTON AREA CONSTRAINT MITIGATION: PHASE II and TNP- BELL COUNTY PROJECT

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  1. HOUSTON AREA CONSTRAINT MITIGATION: PHASE II and TNP- BELL COUNTY PROJECT Robert Lona, P.E. & Don Le ERCOT System Planning

  2. CNP PROJECT JUSTIFICATION • CONCERNS ABOUT FUTURE NORTH – HOUSTON IMPORT CONSTRAINTS AFTER HACM PHASE 1(HILLJE SUB) • CONCERNS ON ADDITIONAL CONGESTION ON TOMBAL 345KV AUTOS Houston Area Constraint Phase II

  3. CNP PROPOSED OPTIONS • INCREASE N – H IMPORTS - SINGLETON OPTIONS 1-4 - SINGLETON OPTION 5(SUB) • RELIEVE TOMBALL 345KV AUTO CONGESTION - OPTION A(HARDIN SUB) - OPTION B1(ROTHWOOD SUB) - OPTION B2 (ROTHWOOD SUB) - OPTION C (HUMBLE SUB) NOTE: AFTER INITIAL STUDIES, SINGLETON OPTIONS #1 - #3 WERE NOT EVALUATED FURTHER, DUE TO LACK OF INCREASED IMPORT CAPABILITY FOR NORTH TO HOUSTON POWER TRANSFERS Houston Area Constraint Phase II

  4. Houston Area Constraint Phase II

  5. Houston Area Constraint Phase II

  6. S=Sandow 5 SC=Sandy Creek 1 OG=Oak Grove 1&2 Houston Area Constraint Phase II

  7. S=Sandow 5 SC=Sandy Creek 1 OG=Oak Grove 1&2 Houston Area Constraint Phase II

  8. PROPOSED EAST BELL COUNTY – TNP ONE 345KV DOUBLE CKT.

  9. East Bell County – TNP One 345KV DB CKT UPGRADE TEMPLE – SALADO 345KV TO 3200A UPGRADE TEMPLE – BOGGY CREEK 138KV TO 1146A UPGRADE TNP ONE – TWIN OAK 345KV DOUBLE CKT. UPGRADE RATTLESNAKE – LAKE CRK 345KV SANDY CREEK GEN TWIN OAK 3 GEN OAK GROVE GEN SANDOW GEN Houston Area Constraint Phase II

  10. PROPOSED EAST BELL COUNTY – TNP ONE PROJECT • PROPOSED IN-SERVICE PEAK 2011 Houston Area Constraint Phase II

  11. 2011 Houston Area Constraint Phase II

  12. 2011 Houston Area Constraint Phase II

  13. 2011 Houston Area Constraint Phase II

  14. PROPOSED OPTIONS TO REDUCE TOMBALL 345KV AUTO CONGESTION Houston Area Constraint Phase II

  15. Houston Area Constraint Phase II

  16. Houston Area Constraint Phase II

  17. Houston Area Constraint Phase II

  18. Houston Area Constraint Phase II

  19. Houston Area Constraint Phase II

  20. SUMMARY MINIMUM ECONOMIC JUSTIFICATION FOR SINGLETON SO4 or SO5 OPTION REQUIRES SANDOW GENERATION MINIMUM ECONOMIC JUSTIFICATION FOR TNPBC PROJECT REQUIRES EITHER ONE OAKGROVE UNIT OR ONE TWIN OAK UNIT MINIMUM ECONOMIC JUSTIFICATION FOR TNPBC WITH SINGLETON ALSO REQUIRES ONE OAK GROVE UNIT OR ONE TWIN OAK UNIT ADDITIONAL ANALYSIS OF NEW SUB IN NORTH HOUSTON NEEDED BEFORE RECOMMENDATION

  21. Questions? Houston Area Constraint Phase II

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