2018 WECC Loads and Resources Data Request Part 1 Colby Johnson Staff Engineer, Performance Analysis Western Electricity Coordinating Council

Data Collection Manual Available by Search on WECC Homepage Available Here Enhanced File Transfer Year EIA Form 860 Data Plant-level, Unit-level, Wind, Solar, etc.. Available in 2017 .zip package Here Western Electricity Coordinating Council

Part 1 Walkthrough Highlights Dashboard Check for 1-in2- (50/50) Forecast Note; no forecast data entered in Part 1 though Gen_Exist If Applicable, check EIA Plant Code Cross referenced with EIA Form 860 Commission/Retirement Dates “TSS” Bus Numbers (PF environment) Western Electricity Coordinating Council

Part 1 Walkthrough Highlights Gen_Add Newly operational units have been moved to Gen_Exist tab, check for correctness Update commission dates if necessary Paths Check for accuracy of ratings, losses, wheeling rates and update if necessary Western Electricity Coordinating Council

Part 1 Walkthrough Highlights Regulating Reserves Amount of regulating reserves expected to be available during Summer and Winter seasons Reported in either MW of by percentage of load Hourly Tabs All hourly tabs are similar Hour column pre-filled (1-8760) Zone column for BAs with multiple zones See Table 17 in Data Collection Manual for details Example (CAISO BA; PGAE Zone, SCE Zone, SDGE Zone) Western Electricity Coordinating Council

Part 1 Walkthrough Highlights Projected Transmission Review, update/remove if necessary Projected Transformer Western Electricity Coordinating Council

Contact Information Colby Johnson Staff Engineer, Performance Analysis 801-819-7662 cjohnson@wecc.biz Western Electricity Coordinating Council