20241001PAC to Staff 252 - 1st Supplemental.pdf

RECEIVED
Tuesday, October 01, 2024
IDAHO PUBLIC
UTILITIES COMMISSION
_ ROCKY MOUNTAIN
POWER
A DIVISION OF PACIFICORP
1407 W North Temple, Suite 330
Salt Lake City, Utah 84116
October 1, 2024
Monica Barrios-Sanchez
Commission Secretary
Idaho Public Utilities Commission
11331 W. Chinden Blvd.
Bldg. 8, Ste. 201-A
Boise, ID 83714
monica.barrio ssanchez(apuc.Idaho.gov
S ecretarygpuc.idaho.gov
RE: ID PAC-E-24-04
IPUC Set 14 (250-256)
Please find enclosed Rocky Mountain Power's 1st Supplemental Response to IPUC 14th Set Data
Request 252.
If you have any questions, please feel free to call me at(801)220-2313.
Sincerely,
/s/
Mark Alder
Manager, Regulation
Enclosures
C.c.: Eric L. Olsen/IIPA elokechohawk.com(C)
Lance Kaufman/IIPA lance(&aegisinsi hg t.com(C)
Matthew Nykiel/ICL matthew.nykiel&gmail.com
Brad Heusinkveld/ICL bheusinkveld(&idahoconservation.org
Thomas J. Budge/Bayer tj racineolson.com(C)
Brian C. Collins/Bayer bcollins(cr�,consultbai.com
Greg Meyer/Bayer gmeyerkconsultbai.com
Kevin Higgins/Bayer khiggins(&energystrat.com(C)
Neal Townsend/Bayer ntownsend(a,energystrat.com (C)
Ronald L. Williams/PIIC rwilliams(&hawleytroxell.com
Brandon Helgeson/PIIC bhel eg sonkhawleytroxell.com
Bradley Mullins/PIIC brmullins&mwanal)tics.com
Val Steiner/PIIC val.steiner(&itafos.com
Kyle Williams/PIIC williamskkbyui.edu

PAC-E-24-04/Rocky Mountain Power
October 1, 2024
IPUC Data Request 252 — I`Supplemental
IPUC Data Request 252
During the virtual meeting on August 26, 2024, between Staff and the Company,
the following project was discussed:
Project Description/Project Name/T-rite 0 Project Def-mitim
Project Specialized TPEN/2021/C/001
Please provide the following information for this project:
(a) Please explain how the budgeted cost for this project changed from $72.7
million in June (McCoy's Exhibit 48, Page 8.5.3 Major Plant Detail) to $38.9
million in August(worksheet provided by Mr. Alder for the subject virtual
meeting).
(b) Please confirm the Company's assertion in the virtual meeting that this
amount represents the line extension allowance determined by Oregon policy
(because the line extension supplies an Oregon customer). If confirmed,
please provide the Company's worksheets that calculate this amount in
accordance with the policy.
(c) If not confirmed, please explain the Company's basis for determining the
amount that it assigned to the network upgrades and provide worksheets
showing these calculations.
(d) Please provide the current estimated in-service date.
(e) Please provide a copy of the most current project schedule (Gantt chart)
showing the duration and dependencies of the major work elements, the
critical path, and the in-service date.
1't Supplemental Response to IPUC Data Request 252
Further to the Company's response to IPUC Data Request 252 dated September
20, 2024, and in response to an inquiry from Idaho Public Utilities Commission
(IPUC) staff requesting for more detail on how the line extension allowance was
calculated, the Company provides the following additional information:
(b) Please refer to Attachment IPUC 252 1"Supplemental which provides page 6
of Oregon Rule 13, "R13.6-E—Previous Tariff in Effect.pdf' which was in
effect at the time of the system impact study (SIS) for Project
Specialized. Oregon Rule 13 describes the Company and the Customer's cost
responsibility for the project.

PAC-E-24-04/Rocky Mountain Power
October 1, 2024
IPUC Data Request 252 — lst Supplemental
Also please refer to Attachment IPUC 252 lst Supplemental which provides
"PacifiCorp Oregon Price Summary Sch 48 -Eff 7-1-2021.pdf' which has the
prices in effect at the time projected revenue for the customer was
estimated. The prices in column "Combined Effective Rate" for primary
voltage Schedule 48 were utilized for the calculation.
Recordholder: Robert Meredith
Sponsor: Robert Meredith