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Technical Review Committee Meeting March 16, 2011 Debra Lew

Western Wind and Solar Integration Study - Phase 2: Base Scenario. Technical Review Committee Meeting March 16, 2011 Debra Lew National Renewable Energy Laboratory Golden, Colorado USA. Move to new production simulation tool.

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Technical Review Committee Meeting March 16, 2011 Debra Lew

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  1. Western Wind and Solar Integration Study - Phase 2: Base Scenario Technical Review Committee Meeting March 16, 2011 Debra Lew National Renewable Energy LaboratoryGolden, Colorado USA NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC

  2. Move to new production simulation tool • Move from MAPS to Plexos because Plexos has capability to optimize around cycling/ramping costs/constraints and ability to model subhourly • Need to build Plexos model. This is an opportunity to ensure base scenario is realistic and reflects current state of knowledge. • Start with WECC TEPPC 2019 database, already built by Plexos • Remember that WWSIS2 is not a siting study, so leveraging other, stakeholder-vetted siting efforts will be useful

  3. WWSIS Phase 1: Siting Scenario • Held wind energy (10, 20, 30%) and solar (1, 3, 5%) targets constant, as opposed to serving loads with the cheapest renewable source • Solar was 70% CSP with 6 hrs storage and 30% rooftop PV. No centralized PV. • Different targets for WestConnect and rest of WECC

  4. Trade-offs in transmission buildouts • Different siting scenarios behaved similarly in terms of operational impacts, when significant BA cooperation was assumed. • Therefore we propose to select only one methodology for siting, although we will build it out to different penetration levels.

  5. Build on other efforts • Include centralized PV – now have reasonable dataset • WECC considering study requests now and likely to include in next tranche: • 2022 33% RPS (6 GW solar in S. NV, 9 GW WY wind) • 2032 33% RPS (12 GW WY wind) • 2022 dataset update by end Aug • Last year’s TEPPC 2029 33% RPS • Renewables sited using Western Renewable Energy Zone (WREZ) model • Some issues in making this case work

  6. 2029 WREZ 33% Base Case 48% 32% Source: WECC TEPPC SWG

  7. Base Scenario • Model year • Equal amounts of renewables throughout WECC • More solar especially in southwest • Increase PV from phase 1 • 50/50 split of PV and CSP. PV includes centralized PV plants • Wind/Solar Siting Scenario • Use WREZ model results – consider starting with 2029 WREZ 33% case

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