Final 2015 ITPNT Assessment BOD Approved

Appendix BPage 1 of 502015 ITPNT2015 Integrated Transmission PlanNear-Term AssessmentJanuary 27, 2015Engineering

Appendix BPage 2 of 50Southwest Power Pool, Inc.Revision HistoryRevision HistoryDateAuthorChange Description12/22/2014SPP staffDraft12/29/2014SPP staffApproved by TWG1/12/15SPP staffRemoved blank rows in Table 5.31/12/2015SPP staffAdded Final Reliability Assessment section1/13/15SPP staff1/13/15SPP staffUpdated Table 5.4 with accurate costs per stateRemoved 21 mile 115 kV line from Walkemeyer – North Liberalbased upon MOPC approval22015 ITPNT Assessment

Appendix BPage 3 of 50Southwest Power Pool, Inc.Table of ContentsTable of ContentsREVISION HISTORY . 2TABLE OF CONTENTS . 3LIST OF FIGURES . 4LIST OF TABLES. 5EXECUTIVE SUMMARY. 6PART I: STUDY PROCESS . 10SECTION 1: INTRODUCTION . 111.1: The ITP Near‐Term . 111.2: How to Read This Report . 12SECTION 2: STAKEHOLDER COLLABORATION . 14SECTION 3: STUDY DRIVERS . 153.1: Introduction . 153.2: Load Outlook . 153.3: Generation . 163.4: Utilization of Different Voltage Levels . 18SECTION 4: ANALYSIS METHODOLOGY . 194.1: Steady State Analysis . 194.2: CBA Model Development . 224.3: Rate Impacts . 22PART II: STUDY FINDINGS . 24SECTION 5: PROJECT SUMMARY. 255.1: Model Analysis and Results . 255.2: Reliability Needs and Solution Development Summary . 255.3: Project Plan Breakdown . 305.4: Project Details . 345.5: Reliability Upgrades from the CBA Model . 375.6: Rate Impacts on Transmission Customers. 395.7: Stability Analysis Results . 415.8: Final Reliability Assessment . 42PART III: APPENDICES . 43SECTION 6: PROJECT MAPS . 44SECTION 7: GLOSSARY OF TERMS . 492015 ITPNT Assessment3

Appendix BPage 4 of 50Southwest Power Pool, Inc.List of FiguresList of FiguresFigure 0.1: 2015 ITPNT Thermal Needs and Solutions . 8Figure 0.2: 2015 ITPNT Voltage Needs and Solutions . 9Figure 3.1: 2015 ITPNT Load Levels . 15Figure 3.2: ITPNT Load Levels Comparisons. 16Figure 3.3: 2015 ITPNT Generation Mix Scenario 0 . 16Figure 3.4: 2015 ITPNT Generation Mix Scenario 5 . 17Figure 3.5: 2015 ITPNT CBA Generation Mix . 17Figure 4.1: Project processing methodology overview . 20Figure 4.2: Project Selection. 21Figure 5.1: 2015 ITPNT Project Breakdown . 30Figure 5.2: 2015 ITPNT Miles New and Rebuild by Voltage Class . 30Figure 5.3: 2015 ITPNT New Line by Voltage Class. 31Figure 5.4: 2015 ITPNT Miles Rebuild/Reconductor by Voltage Class. 31Figure 5.5: 2015 ITPNT NTC Costs by Voltage Class . 32Figure 5.6: 2015 ITPNT Upgrades by Need Year and Total Dollars . 33Figure 5.7: 2015 ITPNT Cost Allocation – Regional vs. Zonal . 33Figure 5.8: 2015 ITPNT West Texas & New Mexico Area Solutions. 34Figure 5.9: 2015 ITPNT West Kansas Solutions . 36Figure 5.10: ATRR Cost Allocation Forecast by Zone of the 2015 ITPNT . 39Figure 5.11: Zonal and Regional ATRR allocated in SPP . 39Figure 5.12: 2015 ITPNT Monthly Bill Impact 1000 kWh/Month Retail Residential . 40Figure 6.1: 2015 ITPNT Texas/Louisiana Solutions. 44Figure 6.2: 2015 ITPNT Nebraska Solutions. 45Figure 6.3: 2015 ITPNT Oklahoma Solutions . 46Figure 6.4: 2015 ITPNT West Kansas Solutions . 47Figure 6.5: 2015 ITPNT East Kansas & West Missouri Solutions . 4842015 ITPNT Assessment

Appendix BPage 5 of 50Southwest Power Pool, Inc.List of TablesList of TablesTable 0.1: 2015 ITPNT Project List Breakdown ‐ Lines by Voltage Class . 6Table 0.2: 2015 ITPNT Project List Breakdown ‐ New Transformer by Voltage Class . 7Table 4.1: Highway Byway Cost Allocation . 23Table 5.1: Unique Thermal needs . 25Table 5.2: Unique Voltage needs . 25Table 5.3: 2015 ITPNT Projects . 29Table 5.4: 2015 ITPNT Projects by State . 32Table 5.5: CBA Projects. 38Table 5.6: Final Reliability Assessment Potential Issues. 42Table 7.1: 2015 ITPNT Glossary of Terms . 492015 ITPNT Assessment5

Appendix BPage 6 of 50Southwest Power Pool, Inc.Executive SummaryExecutive SummaryThe Integrated Transmission Planning (ITP) process is SouthwestPower Pool’s iterative three-year study process that includes 20Year, 10-Year and Near Term Assessments. The 20-YearAssessment identifies transmission projects, generally above 300kV, needed to provide a grid flexible enough to provide benefitsto the region across multiple scenarios. The 10-Year Assessmentfocuses on facilities 100 kV and above to meet system needs over a ten-year horizon. The Near TermAssessment is performed annually and assesses system upgrades, at all applicable voltage levels,required in the near term planning horizon to address reliability needs. Along with the Highway/Bywaycost allocation methodology, the ITP process promotes transmission investment that will meetreliability, economic, and public policy needs1 intended to create a cost-effective, flexible, and robusttransmission network that will improve access to the region’s diverse generating resources. This reportdocuments the Near-Term Assessment that concluded in January 2015.The 2015 ITPNT used two scenario models, Scenario 0 and Scenario 5, built across multiple years andseasons to evaluate power flows across the grid to account for various system conditions across the nearterm horizon. The first scenario (S0) contains projected transmission transfers between SPP legacy BA’sand generation dispatch on the system. The second scenario (S5) maximized all applicable confirmed longterm firm transmission service with its necessary generation dispatch.Additionally, a Consolidated Balancing Authority (CBA) model scenario was built across the sameyears and seasons to show the needs on the SPP transmission system as a result of a SecurityConstrained Unit Commitment (SCUC) and Security Constrained Economic Dispatch (SCED).Voltage Class345 kV230 kV161 kV138 kV115 kV69 kVNew Line (miles)0017013Rebuild/Reconductor (miles)000197667Table 0.1: 2015 ITPNT Project List Breakdown ‐ Lines by Voltage Class1The Highway/Byway cost allocation approving order is Sw. Power Pool, Inc., 131 FERC ¶ 61,252 (2010). The approving order for ITP isSw. Power Pool, Inc., 132 FERC ¶ 61,042 (2010).62015 ITPNT Assessment

Appendix BPage 7 of 50Southwest Power Pool, Inc.Voltage ive SummaryNew Transformer021212Table 0.2: 2015 ITPNT Project List Breakdown ‐ New Transformer by Voltage ClassThe total cost of the 2015 ITPNT project plan is estimated to be 248.2 million for upgrades that willreceive an NTC, NTC-C, or NTC Modify. Of that total, 213.1 million comes from new projectsidentified in the 2015 ITPNT Assessment. Upgrades recommended for an NTC Modify account for 35.1 million of the total project plan cost.These upgrades that will receive an NTC, NTC-C, or NTC Modify solves 208 transmission overloadviolations and 64 voltage violations.2015 ITPNT Assessment7

Appendix BPage 8 of 50Southwest Power Pool, Inc.Executive SummaryFigure 0.1: 2015 ITPNT Thermal Needs and Solutions82015 ITPNT Assessment

Appendix BPage 9 of 50Southwest Power Pool, Inc.Executive SummaryFigure 0.2: 2015 ITPNT Voltage Needs and Solutions2015 ITPNT Assessment9

Appendix BPage 10 of 50PART I: STUDY PROCESS102015 ITPNT Assessment

Appendix BPage 11 of 50Southwest Power Pool, Inc.Section 1: IntroductionSection 1: Introduction1.1: The ITP Near‐TermThe ITPNT is designed to evaluate the near-termreliability and robustness of the SPP transmissionsystem, identifying needed upgrades throughstakeholder collaboration.The ITPNT focusesprimarily on solutions required to meet the reliabilitycriteria defined in OATT Attachment O Section III.6. The process coordinates the ITP20, ITP10,Aggregate Studies, Attachment AQ Studies, and the Generation Interconnection transmission plans bycommunicating potential solutions between processes and using common solutions when appropriate.Unlike the ITP10 and ITP20, the ITPNT is not intended to focus on solutions based on a preferredvoltage level, but to effectively solve all potential reliability needs in their entirety.The 2015 ITPNT process produces a reliable near-term plan for the SPP footprint which identifiessolutions to potential issues for system intact and single contingency (N-1) conditions using thefollowing principles: Identifying potential reliability-based problems consisting of NERC Reliability Standards TPL001 and TPL-002, SPP Criteria and where applicable, local SPP Member criteria Utilizing Transmission Operating Guides Developing additional mitigation plans including transmission upgrades to meet the region’sneeds and maintain SPP and local SPP Member reliability/planning standardsThe ITPNT process is open and transparent, allowing for stakeholder input throughout the assessment.Study results are coordinated with other entities, including embedded and Tier 1.GoalsThe goals of the ITPNT are to: Focus on local and regional needsEvaluate the response of the system on NERC TPL-001 and TPL-002 StandardsUtilize a cost-effective approach to analyze six year out transmission system needsIdentify 69 kV and above solutions stemming from needs including, but not limited to thefollowing:o Resolving reliability criteria needso Improving access to marketso Improving interconnections with SPP’s neighborso Meeting expected load growth demandso Facilitating or responding to expected facility retirements2015 ITPNT Assessment11

Appendix BPage 12 of 50Section 1: Introduction Southwest Power Pool, Inc.Synergize the ITPNT with the Generation Interconnection (GI) process, Aggregate TransmissionService Study (ATSS) process, Attachment AQ Study process (AQ), and the ITP10 and ITP20AssessmentsThe 2015 ITPNT is intended to provide solutions to ensure the reliability of the transmission systemduring the study horizon which includes modeling of the transmission system six years out (i.e. 2020).The specific near-term requirements of Attachment O are: The Transmission Provider shall perform the Near Term Assessment on an annual basis.The Near Term Assessment

Southwest Power Pool, Inc. Revision History 2 2015 ITPNT Assessment Revision History Date Author Change Description 12/22/2014 SPP staff Draft 12/29/2014 SPP staff Approved by TWG 1/12/15 SPP staff Removed blank rows in Table 5.3 1/12/2015 SPP staff Added Final Reliability Assessment section 1/13/15 SPP staff Updated Table 5.4 with accurate costs per state