20180216Steward Exhibit 62.pdf

Case No.PAC-E-17-07
Exhibit No.62
Witness:Joelle R.Steward
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
ROCKY MOUNTAIN POWER
Exhibit Accompanying Second Supplemental Direct Testimony of Joelle R.Steward
Revenue Requirement Overwiew
February 2018
O
Rocky Mountain Power
Exhibit No.62 Page 1 of 1
Case No.PAC-E-17-07
Witness:Joelle R.Steward
Resource Tracking Mechanism
Revenue Requirement Overview --The Cornbined 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,beginningwith
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 requirement ofthe
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 i
on the rate effective date of that case.included in the mechanism
calculation until the amountsOperation&Maintenance Zero unless the assets or part ofthe Actual O&M expense for the are fully included in a general |Expense assets have been included in a general Combined Projects rate case,at which time thisratecase.After a rate case,the base will end.O 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.Incrementalenergy production MWh
associated with Wind Projects subject
to the Wyoming Wind tax multiplied
by the wind tax rate.
NPC Savings The ECAM tra and captures any The KAM has a%%/10%ing e 10%of incremental wind i
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
ECAM related 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 Incrementaldifference will
After 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
O associated with the Wind Projects.ECAM,if any,will be
included in the RTM