WestConnect 2019 Annual Interregional Information Annual Interregional Coordination Meeting February 19, 2019 1
Topics WestConnect Regional Planning Overview 2018-19 Regional Planning Cycle Model Development Regional Transmission Needs Assessment Scenario Studies Interregional Transmission Project Submittals Upcoming Meetings 2
WestConnect Regional Planning Overview Charlie Reinhold, WestConnect Project Manager 3
Regulatory Update Regional Compliance Filings All tariff revisions related to the regional planning requirements of Order 1000 were fully accepted by FERC on January 21, 2016 On August 8, 2016 the 5 th Circuit Court of Appeals vacated FERC’s compliance orders related to mandates regarding the role of the non- jurisdictional utilities in cost allocation On November 16, 2017 FERC upheld its previously compliance orders and provided further explanation as to why its mandates will ensure just and reasonable rates between public and non-public utility transmission providers in the WestConnect region FERC’s decision is back in front of the 5th Circuit on appeal 4
WestConnect Planning Region WAPA BH TSGT Basin WAPA SMUD WAPA BH TANC CSU PSCo (Xcel) WAPA PRPA Basin NVE TSGT WAPA WAPA TSGT SRP LADWP PNM TEP APS WAPA SWTC IID EPE 5
WestConnect Subregional Planning Groups SSPG CCPG SWAT 6 6
PMC Organization Planning Planning Management Consultants Committee Chair: Tom Green, Xcel 3 rd Party Finance Agent Planning Cost Allocation Legal Contract and Subcommittee Subcommittee Subcommittee Compliance Subcommittee Chair: Roy Gearhart, Chair: Akhil Chair: Jennifer Chair: Vacant WAPA Mandadi, APS Spina, APS 7
PMC Membership as of 12/21/2016 Transmission Owner Independent Transmission State Regulatory Key Interest Group w/Load Serving Transmission Customer Commission (1) Obligation (18) Developer (8) Natural American Enrolled TO Vacant Vacant Resources Transmission •Arizona Public Service Defense Council Company* •Black Hills* Blackforest •El Paso Electric Partners •NV Energy* •Public Service of New Exelon Mexico Transmission •Tucson Electric •Xcel – PSCo* ITC Grid Development, LLC* Coordinating TO •Arizona Electric Power Cooperative (formerly SWTC) Southwestern •Basin Electric* Power Group •Colorado Springs Utilities •Imperial Irrigation District TransCanyon* •Los Angeles Department of Water and Power Western •Platte River Energy •Sacramento Municipal Utility District *2018 Eligible Transmission Developer Connection* •Salt River Project Xcel – •Transmission Agency of Northern California Western •Tri-State G&T Transmission Updated 7/11/2018 8 •Western Area Power Administration Company*
PMC Activities Monthly in-person meetings held at rotating member facilities 2019 Meeting Schedule is available on the WestConnect Calendar Manages the Regional Transmission Planning Process Currently developing the scenario studies as outlined in the 2018-19 Regional Study Plan 9
2018-2019 Regional Planning Cycle Update Roy Gearhart, Planning Subcommittee Chair, WAPA 10
Planning Update Topics 1. Summarize completed 2018-19 planning tasks: Study Plan Model Development Report 2. Review results of Regional Needs Assessment Study work is complete Documentation is being finalized and will be available for stakeholder comment 3. Summary of Scenario studies and current status Key assumptions and study methods Schedule for completion 4. Next steps and schedule for remainder of 2018-19 planning cycle Drafting of 2018-19 Regional Transmission Plan 5. Interregional Notes 6. Opportunities for stakeholder engagement 11
2018-19 Process Update E VALUATE & S TUDY P LAN M ODEL I DENTIFY A LLOCATE D RAFT I DENTIFY R EGIONAL D EVELOPMENT D EVELOPMENT A LTERNATIVES C OSTS R EGIONAL P LAN N EEDS 2017 2018 2019 2020 Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May J UN J UL A UG S EP O CT N OV D EC J AN F EB 3/31/2016 ITP Submittal S CENARIO P ROJECT /NTA Deadline (3/31/18) S UBMITTALS S UBMITTAL Current planning activities: W INDOW 1. Finalizing Regional Needs Assessment Second stakeholder First stakeholder Report and collect stakeholder comments Today meeting of 2018 meeting of 2018 2. Complete scenario studies 3. Draft Regional Transmission Plan 12
Two Key Planning Tasks are Complete • 2018-19 Study Plan was approved by PMC on March 14 , 2018 Numerous iterations and public drafts made available to stakeholders for comment Final version is available on WestConnect website Identifies reliability and economic Base Cases (which inform the Regional Assessment), the Base Transmission Plan, and the scope of the Regional Assessments Includes two information-only scenario studies: CAISO export condition and load stress (both reliability assessments) • 2018-19 Model Development Report was approved by the PMC on January 16, 2019 In this cycle, the actual study models were approved individually as they were prepared/finalized The report summarizes the key assumptions in the models used to perform the regional needs assessment 13 WestConnect
Base Transmission Plan Base Transmission Plan is the transmission network topology that is reflected in the regional planning models. • Base Transmission Plan = Planned TO Projects + High probability ITD Projects Inclusion is based on project information gathered in WestConnect’s Transmission Plan Project List for the 2018-19 cycle – this was collected in early 2018 The Model Development Report will provide details about what the 2018-19 Base Transmission Plan represents Overview of 2018-19 Base Transmission Plan Transmission Line Planned Investment Type of Project Number of Projects Project Miles ($K) Substation 61 N/A $ 220,021 Transmission Line 75 647 $ 357,005 Transmission Line and Substation 21 197 $ 256,732 Transformer 22 N/A $ 29,080 Other 12 N/A $ 70,309 Total Projects 191 843 $ 933,147 14
Base Transmission Plan: Changes from Last Cycle Projects starting construction between the 2016- Projects placed in-service between the 2016-2017 & 2017 & 2018-2019 Cycle 2018-2019 Cycle Transmission Planned Number Transmission Number of Planned Type of Project Line Project Investment Type of Project of Line Project Projects Investment ($K) Miles ($K) Projects Miles Substation 7 N/A $27,002 3 N/A $ 24,096 Substation Transmission Line 13 42 $28,210 4 153 $297,000 Transmission Line Transmission Line and Substation 2 77 $15,800 - N/A $ - Transmission Line and Substation Transformer 7 N/A $35,392 1 N/A $10,000 Transformer Other 7 N/A $1,447 1 N/A $38,600 Other Total Projects 36 119 $107,851 9 153 $369,696 Total Projects 15 WestConnect
Base Transmission Plan: Timing of Projects Planned Projects by In-Service Year Planned Projects by In-Service Year (Planned Investment ($K)) (Number of Projects) $350,000 60 $300,000 50 $250,000 40 $200,000 30 $150,000 20 $100,000 10 $50,000 0 $- 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 Planned Projects by In-Service Year Planned Projects sorted by Voltage Class (Transmission Line Project Miles) (Number of Projects) 250 2% 1% 200 7% 150 500 kV DC 500 kV AC 100 24% 345 kV 50 230 kV 66% Below 230kV - 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 16 WestConnect
Base Transmission Plan: Geography and Drivers Planned Projects by State(s) Traversed Planned Projects by Driver Transmission Planned Transmission Line Planned Investment Number of Driver Number of Projects State Line Project Investment Project Miles ($K) Projects Miles ($K) Reliability 171 826 $858,148 Arizona 65 237 $263,017 Public Policy 14 4 $46,749 Economic 6 13 $28,250 California 28 7 $22,423 Total Projects 191 843 $933,147 Colorado 32 254 $350,296 Planned Projects by Subregional Planning Group Nevada 24 11 $31,000 (Transmission Line Project Miles) New Mexico 12 127 $138,109 500 South Dakota 2 48 $23,400 400 Texas 10 14 $- 300 Wyoming 10 20 $52,902 200 Multiple 8 127 $52,000 100 Total Projects 191 843 $933,147 - CCPG SSPG SWAT Multiple 17 WestConnect
Models Approved for Regional Assessment Study Type Case Name Case Description and Scope 2028 Heavy Reliability Expected peak load for June - August during 1500 to 1700 hours MDT, with typical Summer Base flows throughout the Western Interconnection Case 2028 Light Reliability Light-load conditions in spring months during 1000 to 1400 hours MDT with solar Spring Base Case and wind serving a significant but realistic portion of the WECC total load 2028 Base Case Economic Business-as-usual, expected-future case with median load and hydro conditions and PCM representation of resources consistent with enacted public policies. 18 WestConnect
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