CAISO Briefing Western Electricity Coordinating Council Board Meeting December 3, 2014 CAISO Briefing • Energy Imbalance Market Update • Renewable Integration • Regional Transmission Planning 2 Energy Imbalance Market Update 3 Energy Imbalance Market started November 1 • Reduce costs by serving imbalance from most economic resources • Enhances reliability by improving system visibility and responsiveness • Leverages geographical diversity of loads and resources in the market footprint • Builds on existing scalable market platform scalable • Preserves BAA autonomy, including compliance, balancing, and reserve obligations 4 EIM expected to provide significant net benefits ISO/ ISO/NV Energy study on PacifiCorp study incremental benefits (in millions) (in millions) APS study (in millions) annual benefits $21.4 - $129.0 $9.0 - $18.0 (2017) start-up costs approx. $20.0 ($2.5 to ISO) approx. $11.20 ($1.10 to ISO) TBD ($1.0 to ISO) annual ongoing costs approx. $3.00 ($1.35 to ISO) approx. $2.60 ($0.75 to ISO) TBD ($0.65 to ISO) TBD $15.0 - $29.0 (2022) Benefits primarily derived from: • Reduced flexibility reserves • More efficient dispatch, within and across BAs • Reduced renewable energy curtailment 5 EIM deployment update • Smooth transition on November 1 with PacifiCorp relative to scope of implementation. • EIM dispatching participating resources as designed to balance real-time supply/demand across the EIM areas. • Optimized transfers benefiting both supply and demand. • Experienced some transitional data transfer, software issues and process learning. • Tuning new business practices to enhance information flow between operations and market inputs. • ISO will track EIM regional benefits and provide quarterly reports to stakeholders 6 15-minute transfers between PacifiCorp and ISO (+) PacifiCorp to ISO / (-) ISO to PacifiCorp 6000 5000 4000 2000 1000 0 California to PAC 18-Nov 17-Nov 16-Nov 15-Nov 14-Nov 13-Nov 12-Nov 11-Nov 10-Nov 9-Nov 8-Nov 7-Nov 6-Nov 5-Nov 4-Nov 3-Nov 2-Nov -1000 1-Nov MWh 3000 PAC to California 7 Renewable Integration 8 Current and projected renewable generation capacity in operation within the ISO 9 Non-flexible supply creates dispatch issues and potential over-generation conditions Potential Over-generation Conditions Base Load Scenario 30,000 28,000 CAISO Net Load 2020 26,000 24,000 22,000 20,000 18,000 Regulation Down 16,000 Load Following Down 14,000 12,000 Minimum Dispatchable Thermal & Hydro Resources Small Hydro (RPS) Imports (JOU & Dynamic Schedules) 10,000 Geothermal 8,000 Nuclear 6,000 Gas (QFs) 4,000 2,000 Qualifying Facilities (QFs) 0 Oth QFs Gas QFs Nuclear CL – 6/2013 Geothermal Imports S_Hydro CCGT & Hydro IOU – Jointly Owned Units LF Down Reg. Down Net Load 10 Significant RPS curtailment potential observed in 2024 – 40% scenario Scenario 11 Regional Transmission Planning 12 The ISO “regional” annual transmission planning process results in approval of necessary projects each March. January 2014 CPUC - Resource portfolios, additions and retirements Other issues or concerns March 2015 Sequential technical studies • Reliability analysis • Renewable (policydriven) analysis • Economic analysis Publish comprehensive transmission plan with recommended projects Procurement CEC - Demand forecasts Stakeholders State and federal policy Assumptions Previous transmission plan approved projects April 2014 ISO Board approves transmission plan Iterative process repeats annually 13 Transmission underway to meet 33% RPS in 2020 Approval status Transmission upgrade Online ISO $7.0 B Based on 2013/14 Transmission Plan CPUC 1 Carrizo-Midway LGIA NOC effective energized 2 Sunrise Powerlink Approved Approved energized Suncrest dynamic reactive Approved Not needed 3 Eldorado-Ivanpah LGIA Approved energized 4 Valley-Colorado River Approved Approved† energized 5 West of Devers LGIA Pending 2019 6 Tehachapi (segments 1, 2 & 3a of 11 completed) Approved Approved 2015 7 Cool Water-Lugo LGIA Pending 2018 8 South Contra Costa LGIA Not yet filed 2015 9 Borden-Gregg LGIA Not yet filed 2015 10 Imperial Valley C Station Approved Not needed 2014 11 Sycamore-Penasquitos Approved Not yet filed 2017 12 Lugo-Eldorado line reroute Approved Not yet filed 2020 13 Lugo-Eldorado and LugoMohave series caps Approved Not needed 2016 14 Warnerville-Bellota recond. Approved Not yet filed 2017 15 Wilson-Le Grand recond Approved Not yet filed 2020 2017 14 RS April 15 2014 Questions? 15
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