20180329PAC to Staff UT DPU Set 22 (1-25) (1).pdf

1407 W.North Temple
ROCKY MOUNTAIN Salt Lake City,UT 84116
POWER
A DIVISION OF PACIFICORP
March 6,2018
Erika Tedder
Division of Public Utilities
160 E 300 S,4th Floor
Salt Lake City,UT 84114
[e-mail](C)
RE:UT Docket No.17-035-40
DPU 22nd Set Data Request (1-25)
Please find enclosed Rocky Mountain Power's Responses to DPU 20th Set Data Requests 20.20,
and 20.22-20.25.The remaining responses will be provided separately.Provided on the enclosed
Confidential CD is Attachment DPU 20.22.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.:Dan Kohler/DPU [e-mail](C)
Aliea Afnan/DPU [e-mail] (W)
[e-mail] (W)
Dan Peaco/DPU [e-mail] (C)(W)
Kevin Higgins/[e-mail] (C)
Neal Townsend/UAE [e-mail](C)(W)
Gary A.Dodge/UAE [e-mail] (C)
PhillipRussell/UAE [e-mail] (C)
Philip Hayet/OCS [e-mail] (C)
Béla Vastag/OCS [e-mail](C)
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/[e-mail](W)
Chad C.Baker/UIEC [e-mail] (W)
17-035-40 /Rocky Mountain Power
March 6,20 18
DPU Data Request 22.20
DPU Data Request 22.20
Link Second Supplemental Direct.Refer to lines 104-118,regarding the interconnection
restudy process.
(a)During the review of the initial shortlist (detailed in the January 16,2018 testimony)
was the Company assuming that the Gateway South project would be in service by
the end of 2020?If so,provide all documentation and support for that conclusion.
(b)If the answer to part (a)above is no,what changed between the January 16th filing of
the Company's SupplementalDirect Testimony and the February 16th filing of the
Second Supplemental Direct Testimony that altered the approach to bid selection,as
it relates to the relevance of the interconnection queue position?
(c)If the Company knew,prior to the January 16th filing,that the McFadden Ridge II
project was bidding in as a project in the constrained area of PacifiCorp's
transmission system,why was it selected for the initial shortlist?Has the Company
gained new information that made selection of the McFadden Ridge II project
impossible?
Response to DPU Data Request 22.20
(a)No.
(b)During that period,PacifiCorp completed updated portfolio-development studies to
account for results of an interconnection-restudy process.The interconnection-restudy
process was completed to ensure that interconnection studies reflected the most
current long-term transmission plan to construct the Aeolus-to-Bridger/AnticlineD.2
segment of the Energy Gateway project by the end of 2020.PacifiCorp transmission
restudied,in serial interconnection-queue order,interconnection requests for projects
that did not already have an interconnection agreement to determine whether the
staging of the Energy Gateway West project would affect the cost or timing of
projects whose previous interconnection studies depended on Energy Gateway West
in its entirety.PacifiCorp transmission posted the restudied system impact studies
(SIS)on the Open Access Same-Time Information System (OASIS)on January 29,
2018,as well as certain updated restudied SISs on February 9,2018.
The interconnection-restudy process confirmed that 2017 Renewable Request for
Proposals (2017R RFP)bids located in eastern Wyomingwith an interconnection-
queue position greater than Q0712 trigger the need for the full Energy Gateway
South,which is not planned to be place in service by the end of 2020.Consequently,
any bid proposing a project in the constrained area of PacifiCorp's transmission
system with an interconnection-queue position greater than Q0712 cannot receive
interconnection service and achieve commercial operation by the end of 2020 as
required in the 2017R RFP.Before these studies were finalized,PacifiCorp could not
17-035-40 /Rocky Mountain Power
March 6,2018
DPU Data Request 22.20
be certain how the Aeolus-to-Bridger/AnticlineD.2 segment might affect the
interconnection studies for 2017R RFP.
(c)Consistent with the terms of the 2017R RFP,bidders were not required to have a a
completed system impact study to participate.PacifiCorp did not know of the
additional mterconnection-queueposition constraint until it was posted to OASIS on
January 29,2018 and February 9,2018,after McFadden Ridge II had been selected to
both the initial and original final shortlist.McFadden Ridge II has an
interconnection-queuenumber greater than Q0712 and therefore could not achieve
commercial operation by December 31,2020.
17-035-40 /Rocky Mountain Power
March 6,2018
DPU Data Request 22.22
DPU Data Request 22.22
Link Second SupplementalDirect.Refer to lines 158-170,regarding the shortlist process.
(a)Please confirm that the SO model was permitted to select any economic projects in
the transmission-constrained area that bid into the RFP with queue positions of 712
and lower,up to 1,270 MW,plus any economic projects outside the constrained area.
(b)Please list all the projects within the transmission-constrainedarea that bid into the
RFP with queue positions of 712 and lower that were available for selection by the
SO model,includingname,size,location,and queue position.
(c)Please list all the projects outside the transmission-constrainedarea that bid into the
RFP that were available for selection by the SO model,includingname,size,
location,and queue position.
Response to DPU Data Request 22.22
(a)Confirmed.
(b)Please refer to Confidential Attachment DPU 22.22.
(c)Please refer to Confidential Attachment DPU 22.22.
Confidential information is provided subject to Public Service Commission of Utah
(UPSC)Rule 746-1-602 and 746-1-603.
17-035-40 /Rocky Mountain Power
March 6,2018
DPU Data Request 22.23
DPU Data Request 22.23
Link Second Supplemental Direct.Refer to lines 225-231,regarding the IE sensitivity.
(a)Please provide the results of this analysis on a nominal revenue requirements basis
through 2050.
(b)Please provide the economic benefits analysis for the other 8 price-policy scenarios
(SO 20-year,PaR 20-year,and nominal RR through 2050.
Response to DPU Data Request 22.23
(a)Please refer to the Company's 16'Revised response to OCS Data Request 10.3.
(b)The Company has not prepared requested analysis.
17-035-40 /Rocky Mountain Power
March 6,2018
DPU Data Request 22.24
DPU Data Request 22.24
Link Second Supplemental Direct.Refer to lines 240-242.
(a)Please confirm that there were no modifications to any SO and PaR modeling
assumptions for the second supplemental direct testimony other than the substitution
of the projects in the final shortlist.If not confirmed,please identify the changes and
provide specific references to the location of the changes in the work papers.
(b)Please confirm that there were no changes in the methods used to calculate economic
benefits for the second supplemental direct testimony.If not confirmed,please
identify the changes and provide specific references to the location of the changes in
the work papers.
Response to DPU Data Request 22.24
(a)Confirmed.
(b)Confirmed.
17-035-40 /Rocky Mountain Power
March 6,2018
DPU Data Request 22.25
DPU Data Request 22.25
Link Second Supplemental Direct.Refer to lines 415-448,regarding the solar sensitivity.
(a)Please provide the results of this analysis on a nominal revenue requirements basis
through 2050.
(b)Please provide the economic benefits analysis for the other 7 price-policy scenarios
(SO 20-year,PaR 20-year,and nominal RR through 2050).
Response to DPU Data Request 22.25
(a)The nominal revenue requirements for the solar sensitivitythrough 2050 was
provided in the confidential work papers supporting the second supplemental
testimony of Company witness,Rick T.Link,specially file "EV2020 Second Supp
Results Summary File.xlsx".
(b)The Company has not prepared the requested analysis.