20180208PAC to Staff UT OCS Set 9 (1-6).pdf

1407 W.North Temple
ROCKY MOUNTAIN Salt Lake City,UT 84116
POWER
ADIVISION OFPACIFICORP
Janaury 30,2018
Béla Vastag
Office of Consumer Services
160 East 300 South
Salt Lake City,Utah 84111
[e-mail] (C)
RE:UT Docket No.17-035-40
OCS 9 h Set Data Request (1-6)
Please find enclosed Rocky Mountain Power's Responses to OCS 9th Set Data Requests 9.1-9.6,
excluding 9.1 and 9.3.These responses will be provided separately.Provided on the enclosed
Confidential CD are Confidential Attachments OCS 9.4 -(1-2).Confidential information is
provided subject to Public Service Commission of Utah (UPSC)Rule 746-1-602 and 746-1-603.
If you have any questions,please call me at [phone].
Sincerely,
Jana Saba
Manager,Regulation
Enclosures
C.c.Erika Tedder/DPU [e-mail]@utah.gov(C)
Dan Kohler/DPU [e-mail](C)
Dan Peaco/DPU [e-mail] (C)(W)
Aliea Afnan/DPU [e-mail] (W)
[e-mail](W)
Philip Hayet/OCS [e-mail] (C)
Gary A.Dodge/UAE [e-mail] (C)
Phillip Russell/UAE [e-mail] (C)
Kevin Higgins/UAE [e-mail] (C)
Neal Townsend/UAE [e-mail](C)(W)
Sophie Hays/UCE [e-mail](C)
Kate Bowman/UCE [e-mail](C)(W)
Emma Rieves/UCE [e-mail](C)(W)
Lisa Tormoen Hickey/[e-mail] (C)
Mitch Longson/Interwest [e-mail] (C)
Nancy Kelly/[e-mail](C)
Jennifer Gardner/WRA [e-mail](C)
Penny Anderson/WRA [e-mail] (W)
Peter J.Mattheis/Nucor [e-mail] (C)
Eric J.Lacey/Nucor [e-mail] (C)(W)
William J.Evans/UIEC [e-mail]
Vicki M.Baldwin/UIEC [e-mail](W)
Chad C.Baker/UIEC [e-mail] (W)
17-035-40 /Rocky Mountain Power
January 30,2018
OCS Data Request 9.2
OCS Data Request 9.2
Refer to Mr.Link's spreadsheet,Table 2-SD,Table 3-SD,Figure 5 FSL Results
Summary File.xlsx,tab =Figure 5.Values in row 2 refer to the file,Gateway Results
Direct Testimony.xlsm.If this file has not been supplied,please provide the file
electronically,with all formulas intact.If this file has been supplied,please note where it
may be found.
Response to OCS Data Request 9.2
Please refer to the confidential work papers supporting the direct testimony of Company
witness,Rick T.Link,specifically:
Folder:Exhibits\Figures Tables
File:Gateway Results Direct Testimony.xlsm
17-035-40 /Rocky Mountain Power
January 30,2018
OCS Data Request 9.4
OCS Data Request 9.4
Refer to the file SO Portfolio Rl7-WFSL-MM 180ll21945.xlsm:
(a)See tab =Renewable Transmission Cost.Please provide a narrative explanation of
the purpose of this worktab,and for each pasted in value,provide the source
calculations used to derive the values,and explain how the values were calculated.
(b)See tab =Trans Integrate Cost.Provide the calculations for the pasted in values in
column B (Integration Cost).
Response to OCS Data Request 9.4
(a)The worksheet "Renewable Transmission Cost"is used to adjust the transmission
integration costs related to any wind or solar resources selected in a System
Optimizer (SO)model study portfolio.Transmission costs are input as part of the
resource fixed operations and maintenance costs in the SO model (dollars per
kilowatt-year ($/kW-year))and since the model can select any size wind or solar
resource,the transmission costs need to be adjusted outside the model once the
amount of new renewable resources chosen by the model are known.This adjustment
is made to account for the estimated transmission cost associated with resource
selections made by the SO model.Please refer to Confidential Attachment OCS 9.4-
1,which provides the source of the costs used in this worksheet.The attachment was
also provided on the confidential data disks accompanying the Company's 2017
Integrated Resource Plan,specifically:
Folder:Data Disk 2_CONF\Assumptions +Inputs Conf.zip\Assumptions +
Inputs\Transmission,CONF
File:IRP Resource Locations Transmission Cost.xlsx
(b)Please refer to Confidential Attachment OCS 9.4-2 (worksheet named =Transmission
Integration),which provides the calculations of the values in column B (Integration
Cost).This file was also provided on the confidential data disks accompanying the
Company's 2017 IRP,specifically
Folder:Data Disk 2 CONF\Assumptions +Inputs Conf.zip\Assumptions +
Inputs\Transmission,CONF
File:SSR EPM Input.xlsx
Confidential information is provided subject to Public Service Commission of Utah Rule
746-1-602 and 746-1-603.
17-035-40 /Rocky Mountain Power
January 30,2018
OCS Data Request 9.5
OCS Data Request 9.5
Refer to the Company's response to OCS 5.8,in which the Company justifiedits decision
to levelize PTC costs in its prior to-2036 economic analyses.
(a)Please explain what has changed about PTCs such that the Company no longer
believes it is necessary to levelize PTC costs in its to-2036 economic analyses.
(b)Please explain why the Company no longer believes that PTCs should be "levelized
over the life of the project in the same way that other components of revenue
requirements are levelized (i.e.,return on and return of investment)?"
Response to OCS Data Request 9.5
(a)Please refer to the Company's response to DPU Data Request 13.1 subpart (a).
(b)Please refer to the Company's response to DPU Data Request 13.1 subpart (a).
17-035-40 /Rocky Mountain Power
January 30,2018
OCS Data Request 9.6
OCS Data Request 9.6
On January 22,2018,it was reported that President Trump has approvedprotective tariffs
on imported solar cells.Please discuss what impact PacifiCorp anticipates that will have
on its plans to acquire solar energy,either throughthe Solar RFP or otherwise.
Response to OCS Data Request 9.6
All 2017 Solar Request for Proposals (2017S RFP)bidders were queried during bid
screening regarding the tariff and their strategy to mitigate the tariff.Bidders selected to
the initial shortlist will be required to provide best-and-final pricing which will allow the
selected bidders to update their pricing to account for tariff changes or other pricing
considerations.The Company anticipates that the tariff will affect available inventory
and/or pricing of non-tariffed panels as well as tariffed panels.