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HomeMy WebLinkAbout20180117Steward Exhibit 42.pdfCase No.PAC-E-17-07 Exhibit No.42 Witness:Joelle R.Steward BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION ROCKY MOUNTAIN POWER Exhibit Accompanying Supplemental Direct Testimony of Joelle R.Steward January 2018 O Rocky Mountain Power Exhibit No.42 Page 1 of 1 Case No.PAC-E-17-07 Witness:Joelle R.Steward Resource Tracking Mechanism Revenue RequirementOverview -The Combined Projects Category Base New Deferral Capital Investment Zero unless the assets or part of the Actual monthly beginning plant in- assets have been included in a general service balances associated with the rate case.After a rate case.the base Combined Projects.beginning with will be the amount included in the test first assets placed in service. period,beginning on the rate effective date of that case. Accumulated Depreciation Same as capital investment.Monthly depreciation reserve of Reserve Combined Projects. Accumulated Deferred Same as capital investment.Actual accumulated deferred income Income Tax tax balances associated with the Combined Projects. Wheeling Revenues Zero unless the Transmission Projects The revenue requirementofthe have been included,or partially Transmission Projects.multiplied by included.in a general rate case.After the percentage of transmission revenue a rate case.the base will be the amount requirement paid by third-party The difference between the included in the test period,beginning transmission customers.base and new columns will be on the rate effective date ofthat case.included in the mechanism calculation until the amountsOperation&Maintenance Zero unless the assets or part of the Actual O&M expense for the are fullv included in a generalExpenseassetshavebeenincludedinageneralCombinedProjectsratecase.at which time thisratecase.After a rate case.the base will end.will be the amount included in the test period.beginning on the rate effective date of that case. Depreciation Expense Zero.Actual monthly plant in-service balances associated with the Combined Projects less the base multiplied by current depreciation rates. Property Taxes Zero.Capital Investment deferral less the Depreciation Reserve deferral multiplied by the average property tax rate from the last rate case. Wind Tax Zero.Incremental energy production MWh associated with Wind Projects subject to the Wyoming Wind tax multiplied by the wind tax rate. NPC Savings The ECAM tracks and captures any The ECAMhas a 90%/10%sharing The 10%of incremental wind incremental changes to wind of the difference between base NPC production not in base rates production between NPC in base rates and actual NPC.The RTM will capture will be multiplied by monthly and actual NPC.the 10%savings not included in the HLH and LLH prices,(Four ECAMrelated to incremental energy Corners for east resources) production associated with the Wind less wind integration costs. Projects,and pass these savings back to customers. PTC Zero until the next general rate case.Actual MWh eligible for PTC Incremental difference will Aner a rate case,the base will be the produced by the Wind Projects continue to be recovered amount included in the test period.multiplied by the production tax credit through the ECAM. starting on the rate effective date.rate.Differences not in the associated with the Wind Projects.ECAM,if any.will be included in the RTM.