20180329PAC to Staff WY WPSC Set 6 (1-15) (1).pdf

ROCKY MOUNTAINPOWER
A DIVISION OF PACIFICORP 1407 W North Temple,Suite 330
Salt Lake City,Utah 84116
March 2,2018
Meridith Bell
2515 Warren Avenue,Suite 300
Cheyenne,Wyoming 82002
meridith.bell@wyggv(C)
RE:Wyoming Docket 20000-520-EA-17
WPSC 6th Set Data Request (1-15)
Please find enclosed Rocky Mountain Power's Responses to WPSC 6th Set Data Requests 6.1-
6.5,6.9,and 6.15.The remaining responses will be provided separately.Provided on the
enclosed Confidential CD are Confidential Attachments WPSC 6.4 and 6.9.Confidential
information is provided subject to the terms and conditions of the protective agreement in this
proceeding.
If you have any questions,please call me at [phone].
Sincerely,
Stacy Splittstoesser,
Manager,Regulation
Enclosures
C.C.:Lori L.Brand/WPSC [e-mail] (W)
John Burbridge/WPSC [e-mail] (W)
Michelle Bohanan/WPSC [e-mail] (W)
Kara Seveland/WPSC [e-mail](W)
Morgan Fish/WPSC [e-mail] (W)
Dave Walker/WPSC [e-mail] (W)
Perry McCollom/WPSC [e-mail] (W)
Abigail C.Briggerman/WIEC [e-mail] (C)
Patti Penn/WIEC [e-mail](W)
Thor Nelson/WIEC [e-mail] (C)(W)
Emanuel Cocian/WIEC [e-mail] (W)
Adele Lee/WIEC [e-mail] (W)
Nik Stoffel/WIEC [e-mail] (C)(W)
Christopher Leger/OCA [e-mail](C)
Crystal J.McDonough/[e-mail] (C)
Callie Capraro/NLRA [e-mail]
Lisa Tormoen Hickey/[e-mail] (C)
Brandon L.Jensen/RMSC [e-mail] (C)
Roxane Perruso/TOTCO [e-mail]
Jane M.France/TOTCO [e-mail] (C)
Constance E.Brooks/Anadarko [e-mail](C)
Danielle Bettencourt/Anadarko [e-mail](C)(W)
Paul Kapp/Anadarko [e-mail] (C)
Lisa Christian/TOTCO [e-mail] (C)
J.Kenneth Barbe/Southland [e-mail] (C)
20000-520-EA-17 /Rocky Mountain Power
March 2,2018
WPSC Data Request 6.1
WPSC Data Request 6.1
Does the Cedar Springs PPA take into account any changes caused by recently enacted
tax law?Please explain.
Response to WPSC Data Request 6.1
Yes.The bidder was given the opportunityto provide updated best and final pricing no
later than December 21,2017 that included any impact of the enacted tax law.
Respondents:Bruce Griswold
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
March 2,2018
WPSC Data Request 6.2
WPSC Data Request 6.2
When will the RFPs in this Docket be concluded?Please explain.
Response to WPSC Data Request 6.2
The request for proposals (RFP)will be concluded upon approval of the final shortlisted
projects and executed agreements with the final shortlisted projects.
Respondents:Bruce Griswold
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
March 2,2018
WPSC Data Request 6.3
WPSC Data Request 6.3
What are the depreciation lives assumed by the Company's contracted wind project
partners in this Docket?Please explain.
Response to WPSC Data Request 6.3
All final short list 2017 Renewable Request for Proposals (2017R RFP)wind assets,
either owned and constructed by PacifiCorp or built-and-transferred to PacifiCorp,are
assumed to have a 30-year depreciable life.
Respondents:Bruce Griswold
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
March 2,2018
WPSC Data Request 6.4
WPSC Data Request 6.4
Please explain how the Company plans to maintain obligated system loads if the coal
plants set to retire between now and 2030 are closed,and Wyoming wind generation is
not available.Please explain.
Response to WPSC Data Request 6.4
Please refer to Confidential Attachment WPSC 6.4,which provides an example of
PacifiCorp's system in July 2029 for a specific block of hours when wind generation is
assumed to be at its lowest,and when wind generation is assumed to be at its highest.The
attachment shows that the Company is able to balance the impact of low wind generation
using any of the followingexample actions (not in specific order,and not limited to):(1)
increased or decreased generation for thermal,(2)increased hydro,(3)increased demand-
side management (DSM),(4)increased front office transactions (FOT),(5)increased or
decreased system-balancing market purchases,and/or (6)reduced market sales.The
effects of low and high wind generation are considered and already captured in the new
wind and transmission project analysis by the wind shapes applied in the system
optimizer model (SO model)and the Planning and Risk (PaR)model.
Confidential information is provided subject to the terrns and conditions of the protective
agreement in this proceeding.
Respondents:Dan Swan
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
March 2,2018
WPSC Data Request 6.5
WPSC Data Request 6.5
Please provide any information/studies in support of the Company's response to CIR 6.4.
Response to WPSC Data Request 6.5
Please refer to the Company's response to WPSC Data Request 6.4.
Respondents:Dan Swan
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
March 2,2018
WPSC Data Request 6.9
WPSC Data Request 6.9
Please explain what the Company currentlyexpects the Wyominggenerationresource
mix will be like in the each of the followingyears:2023,2025,2027,2029,2031,2035,
and 2038.Please provide the names of the plant if known.If the asset is not known,
please provide what the expected generation type will be and expected amounts of
generation.
Response to WPSC Data Request 6.9
Please refer to Confidential Attachment WPSC 6.9.The "Wyoming GenerationResource
Mix"worksheet in the attachment provides a table of the Wyominggenerationresource
mix for the requested years using Planning and Risk (PaR)model results for the medium
gas,medium carbon dioxide (CO2)price-policy scenario,consistent with the confidential
work papers supporting the second supplemental direct testimony of Company witness,
Rick T.Link,specifically folder "PaR Summary Reports",file "PaR Stochastic Summary
P R17-FSLW-MM 1802091508.xlsm".Note:year 2038 is not available as it falls
outside of the study period.
Respondents:Randy Baker
Witness:Rick Link
20000-520-EA-17 /Rocky Mountain Power
March 2,2018
WPSC Data Request 6.15
WPSC Data Request 6.15
Does the Company plan to proceed with the Wind and/or Transmission Projects if a State
Regulatory Commission denies the Company's application in whole or in part?Please
explain.Who would provide the financing for the denied Project under the described
circumstances?
Response to WPSC Data Request 6.15
Approval of the certificate of public convenience and necessity (CPCN)application in
Wyoming (Docket 20000-520-EA-17)and the Significant Energy Resource Decision
application in Utah are required for the project to go forward.Althoughadvance
approvals in other states are not technical requirements for the Company to proceed,
receipt of such approvals,or the lack thereof,and any conditions placed on approvals,
will be a key factor in the Company's ultimate decision on whether to proceed.The
Company will assess how or if it will proceed once the outcome of the proceedings is
known.
Respondents:Joelle Steward
Witness:Joelle Steward