2 What and WhyThe resource adequacy check is a measure of a regions ability to meet its load requirements at time of peak using resources within each region and transmission constrained imports from neighboring regions.TEPPC uses this check to indicate if there are adequate resources in the dataset as well as a check to not over build the dataset.
3 List of Inputs Sub-regional coincident peak demand 2024 generation by area and resource typeTargeted planning reserve marginOn-peak coincident capacity value by resource typeTransfer capacity that could be used to eliminate deficitsHigh-Cost CTThe approach historically used by WECC and relatively easy to implementCannot readily simulate DR program rules (e.g., limits on hours per event)Iterative LMP-Based ApproachThe approach implemented last year for economic DR resourcesCan specify precisely which hours DR resources are calledRequires a separate model outside of PROMOD and iterative runs of PROMOD with and without DR (i.e., not the most elegant approach)
4 2024 Generation Renewable Resources Conventional Resources As needed to meet RPS targetsConventional ResourcesWECC class code 0-2 resourcesBased on resource reconciliation efforts and stakeholder feedbackOTC replacement unitsArapahoe 4 to natural gas and Valmont/Cherokee units replaced with one natural gas unit
5 Sub-Regional Coincident Peak Demand Both summer and winter peaksExtracted from the 2024 Common Case load forecastPeak Load LookupNameAZ-NM-NVBasinAlbertaBritish ColumbiaCA-NorthCA-SouthNWPPRMPASummer Peaks34,65215,55414,3409,03429,39743,06728,05313,465Winter Peaks21,72412,42115,79512,29620,35727,73834,33711,202
6 Planning Reserve Margins LRS 2013 Power Supply AssessmentSub-RegionZones Included in Sub-RegionSummerSummer MarginWinter MarginAZ-NM-NVArizona, New Mexico, Southern Nevada13.6%14.0%BasinIdaho, Northern Nevada, Utah13.7%Alberta12.6%13.9%British ColumbiaCA-NorthNorthern California, San Francisco, SMUD15.0%12.1%CA-SouthSouthern California Edison, San Diego Gas & Electric, LADWP, Imperial Irrigation District15.2%11.0%NWPPPacific Northwest, Montana17.5%19.2%RMPAColorado, Wyoming15%15.9%LRS Power Supply Assessment Document
7 On-Peak Capacity Value, Summer Stakeholder input from past/current study programsCurrent values pending SWG feedbackSummer - Percentage of Installed Capacity Available to Serve Load at Time of PeakGeneration TypeAZ-NM-NVBasinAlbertaBritish ColumbiaCA-NorthCA-SouthNWPPRMPABiomass RPS100%66%65%Geothermal72%70%Small Hydro RPS35%Solar PV60%Solar CSP090%95%Solar CSP6Wind10%16%5%HydroPumped StorageCoalNuclearCombined CycleCombustion TurbineOther SteamOtherNegative Bus LoadDispatchable DSM
8 Available Transmission Capacity Between Subregions Based on path ratingsAccounts for transmission capacity used to reassign joint ownership plantsLimited so transfers do not exceed a subregion's surplusAssumed wheeling from neighboring regions only
9 Conventional generation added RegionGen needed after RPS additions (MW)Gen added to each region (MW)CA-SO5336RMPA694946Basin650655.2AZ-NM-NV9483874AESO873915.9CA-NO21331682.3BC (Site C)1099.8