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  • 2017 STEP 2 0 1 7 S P P T r a n s m i s s i o n

    E x p a n s i o n P l a n

    R e p o r t

    January 11, 2017

    Engineering

  • Southwest Power Pool, Inc. Revision History

    2 2017 STEP Report

    Revision History

    Date Author Change Description

    01/06/2017 SPP Initial Draft

    01/11/2017 SPP Final Draft

    1/17/2017 SPP Updated Section 9.2 to reflect 8 TSS projects

    1/17/2017 SPP Endorsed by MOPC

    1/31/2017 SPP Approved by the SPP BPD

  • Southwest Power Pool, Inc. Table of Contents

    3

    Table of Contents

    REVISION HISTORY ...................................................................................................................................................................................................... 2 TABLE OF CONTENTS .................................................................................................................................................................................................. 3 LIST OF FIGURES ........................................................................................................................................................................................................... 4 SECTION 1: EXECUTIVE SUMMARY ........................................................................................................................................................................ 6 SECTION 2: TRANSMISSION SERVICES .............................................................................................................................................................. 10

    2.1: Transmission Service 2016 Overview .......................................................................................................................................... 10 2.2: Tariff Attachments AQ and AR ......................................................................................................................................................... 12

    SECTION 3: GENERATOR INTERCONNECTION ................................................................................................................................................. 14 3.1: Generator Interconnection Overview ............................................................................................................................................ 14

    SECTION 4: INTEGRATED TRANSMISSION PLANNING ................................................................................................................................... 16 4.1: Integrated Transmission Planning Overview ............................................................................................................................ 16 4.2: ITP20 .............................................................................................................................................................................................................. 16 4.3: 2017 ITP10 ................................................................................................................................................................................................. 17 4.4: 2016 ITP Near-Term (ITPNT) ........................................................................................................................................................... 20 4.5: Transmission Planning Improvement Task Force ................................................................................................................. 24

    SECTION 5: HIGH PRIORITY STUDIES ................................................................................................................................................................ 27 5.1: SPP Priority Projects ............................................................................................................................................................................. 27 5.2: High Priority Incremental Load Study (HPILS) ........................................................................................................................ 28

    SECTION 6: SPONSORED UPGRADES ................................................................................................................................................................ 32 SECTION 7: REGIONAL COST ALLOCATION REVIEW (RCAR) .................................................................................................................. 33 SECTION 8: INTERREGIONAL COORDINATION ................................................................................................................................................. 35

    8.1: Interregional Planning ........................................................................................................................................................................... 35 8.2: Interregional Requirements of Order 1000 ................................................................................................................................ 40 8.3: Interregional Planning Coordination Improvements ............................................................................................................. 40

    SECTION 9: PROJECT TRACKING ......................................................................................................................................................................... 41 9.1: NTC Letters Issued in 2016 ............................................................................................................................................................... 41 9.2: Projects Completed in 2016............................................................................................................................................................... 41 9.3: ITP20 Projects ........................................................................................................................................................................................... 42

    SECTION 10: STEP PROJECT LIST .................................................................................................................................................................... 44 10.1: Facility owner abbreviations used in the STEP List ........................................................................................................... 45 10.2: Upgrades: Information breakdown .............................................................................................................................................. 45

    SECTION 11: NTCS ISSUED IN 2016 ................................................................................................................................................................. 49 SECTION 12: PROJECTS COMPLETED IN 2016 .............................................................................................................................................. 54

    12.1 ITP Projects Completed in 2016 .................................................................................................................................................... 54 12.2 Transmission Service Projects Completed in 2016 ............................................................................................................. 55 12.3 Generator Interconnection Projects Completed in 2016 ................................................................................................... 55 12.4 High Priority Projects Completed in 2016 ................................................................................................................................. 56 12.5 Sponsored Projects Completed in 2016 .................................................................................................................................... 56

    SECTION 13: GLOSSARY OF TERMS ................................................................................................................................................................... 57

  • List of Figures Southwest Power Pool, Inc.

    4 2017 STEP Report

    List of Figures

    Figure 1.1: Cost by Project Type - 2017 STEP ............................................................................................................................................... 7 Figure 1.2: NTCs Issued in 2016 per Project Type ....................................................................................................................................... 8 Figure 1.3: 2016 Completed Projects .................................................................................................................................................................. 9 Figure 2.1: STEP Cost Estimate Comparison for Transmission Service Projects – 2014-2017........................................ 12

    Figure 2.2 DPT Study Process .............................................................................................................................................................................. 13 Figure 3.1: STEP Cost Estimate Comparison for Generator Interconnection Projects – 2014-2017 ............................. 15 Figure 4.1: 2017 ITP10 Recommended Portfolio ........................................................................................................................................ 20 Figure 4.2: 2016 ITPNT Thermal Needs and Solutions.......................................................................................................................... 22 Figure 4.3: 2016 ITPNT Voltage Needs and Solutions ........................................................................................................................... 23 Figure 4.4

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