20150626Staff 1-7 to PAC.pdf

NEIL PRICE
DEPUTY ATTORNEY GENERAL
IDAHO PUBLIC UTILITIES COMMISSION
PO BOX 83720
BOISE, IDAHO 83720.0074
[phone]
ISB NO. 6864
Street Address for Express Mail:
472W, WASHINGTON
BOISE, IDAHO 83702-5918
Attorney for the Commission Staff
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF PACIFICORP DBA )
ROCKY MOUNTATN POWER'S 2015 ) CASE NO. PAC-E-15-04
INTEGRATED RESOURCE PLAN.)
)) FIRST PRODUCTION REQUEST
) OF THE COMMISSION STAFF
) TO ROCKY MOUNTATN POWER
The Staff of the Idaho Public Utilities Commission, by and through its attorney of record,
Neil Price, Deputy Attorney General, requests that PacifiCorp dba Rocky Mountain Power,
(Company; Rocky Mountain) provide the following documents and information as soon as
possible, but no later than FRIDAY, JULY 17,2015.
The Company is reminded that responses pursuant to Commission Rules of Procedure
must include the name and phone number of the person preparing the document, and the name,
location and phone number of the record holder and if different the witness who can sponsor the
answer at hearing if need be. Reference IDAPA 31.01.01.228.
This Production Request is to be considered as continuing, and Rocky Mountain is
requested to provide, by way of supplementary responses, additional documents that it or any
person acting on its behalf may later obtain that will augment the documents produced.
FIRST PRODUCTION REQUEST OF THE
COMMISSION STAFF TO ROCKY
MOUNTAIN POWER JI.INE 26,2015
Please provide answers to each question, supporting workpapers that provide detail or are
the source of information used in calculations, and the name, job title and telephone number of
the person preparing the documents. Please identifu the name, job title, location and telephone
number of the record holder.
Please provide all Excel and electronic files on CD with formulas activated.
REQUEST NO. 1: The Company mentions in Volume 1, Chapter 4 at the bottom of page
54 that it is a member of the Northem Tier Transmission Group (NTTG) and the Western
Electricity Coordinating Council's (WECC's) Transmission Expansion Planning Policy
Committee (TEPPC). In relation to PacifiCorp's participation in these two organizations, please:
o explain whether the resulting regional and interregional plans result in a cost-allocation
framework that is suitable for PacifiCorp's investment and ownership rights;
o describe how PacifiCorp implements Powerflow or Production Cost Model data
improvements to TEPPC's Common Base Case and to NTTG's regional analyses;
o explain whether the Company's improvements to the transmission data are provided to
TEPPC or NTTG for future Common Base Case model improvements; and
. explain how the TEPPC and./or NTTG analyses contribute to the Company's transmission
planning and benefit evaluation efforts.
REQUEST NO. 2: The Company mentions in Volume 1, Chapter 4,near the bottom of
page 48 that the Company is'orequired to meet mandatory...reliability standards and planning
requirements." With respect to the Company's compliance with these regulations, please:
o describe how the Company's transmission planning and benefit evaluation efforts address
reliability challenges;
. explain whether PacifiCorp performs a'round trip' analysis to estimate transmission
benefits (i.e., PCM - Power Flow - PCM); and
o describe how PacifiCorp conducts dynamic stability analyses for future transmission
system improvements or mitigations.
FIRST PRODUCTION REQUEST OF THE
COMMISSION STAFF TO ROCKY
MOUNTAIN POWER 2 JI.JNE 26,2015
REQUEST NO.3: NTTG is currently arralyzingan "unsponsored project" for mandatory
regional cost allocations for additional transmission capacity for the Aeolus - Anticline - Populus
500 kV. According to NTTG this alternative was identified by the Technical Workgroup to
solve overload on the Dave Johnston to Laramie River 230 kV line. Please provide the
following:
o the specific location of this project, including any interconnection points to PacifiCorp's
transmission or distribution facilities;
o the planned additional capacity from the additional transmission;
o whether PacifiCorp's analysis confirms that this project is necessary for regional
transmission reliability; and
. an explanation as to why PacifiCorp is not sponsoring this project.
REQUEST NO. 4: The Company mentions in Volume 1, Chapter 4,near the bottom of
page 48 that the Company's transmission system operations also respond to requests made by
Peak Reliability as the NERC Reliability Coordinator. Please describe the services PacifiCorp
obtains as a member of Peak Reliability including services such as the Enhanced Curtailment
Calculator, the Advanced Applications, or the third party certification of the Company's physical
security inventory. Does PacifiCorp anticipate expanding its use of any Peak Reliability services
in the future? How does the Company's transmission system operation, in response to Peak
Rel iability reque sts, affect P acifi C orp transmi s sion planning ?
REQUEST NO. 5: Regarding the Company's "Wind Integration Study" update that seeks
to account for estimated benefits from the Company's participation in the EIM (See Volume 2,
Section H), please provide information on the following:
. how the Company estimates transmission congestion and how this is factored in to the
cost-benefit analysis;
o whether the Company is utilizing, or plans to develop or utilize, a'oresource sufficiency
tool" to demonstrate adequate reserves and resources for reliability requirements
compliance;
FIRST PRODUCTION REQUEST OF THE
COMMISSION STAFF TO ROCKY
MOI.]NTAIN POWER JUNE 26,2015
whether the Company has reduced its regulating reserve requirement as a result of its
allocation of diversity benef,rts (See Volume 2, Section H, pg. 127, first paragraph);
a description of the Company's "regional flow forecast tool" that identifies locations of
transmission constraints ; and
o if the Company's participation in "regulation pooling" is expected to increase or decrease
as a result of EIM participation.
REQUEST NO. 6: The December 22,2014 memorandum to PacifiCorp from the20l4
Wind Integration Study Technical Review Committee recommended that "future work should
explore balancing area cooperation between" the eastern and western Balancing Authority Areas
of PacifiCorp 'ounder the EIM framework" (See Volume 2, Section H, page 134). Please explain
the steps taken by the Company to address this recommendation. Please also explain whether the
recent exchange of transmission assets with Idaho Power furthers this type of coordination.
REQUEST NO. 7: The Energy Storage Screening Study was corlmissioned by the
Company to define energy storage technologies' applications among other purposes (See
Volume 2, Section Q, page 531). Please explain whether the Company is evaluating the use of
energy storage to address any distribution system issues.
DATED at Boise, Idaho, thiszLJhay of June 2015.
/t
Neil Price
Deputy Attorney General
Technical Staff: Johanna Bell (l-7)
i:umisc:prodreq/pacel5.4npjbmmsd prod reql
FIRST PRODUCTION
COMMISSION STAFF
MOUNTAIN POWER
REQUEST OF THE
TO ROCKY
4 JI.TNE 26,2015
CERTIFICATE OF SERVICE
I HEREBY CERTIFY THAT I HAVE THIS 26S DAY OF JUNE 2015,
SERVED THE FOREGOING FIRST PRODUCTION REQUEST OF THE
COMMISSION STAFF TO ROCKY MOUNTAIN POWER, N CASE NO.
PAC.E.I5-04, BY MAILING A COPY THEREOF, POSTAGE PREPAID, TO THE
FOLLOWING:
TED WESTON
ID REG AFFAIRS MANAGER
ROCKY MOUNTAIN POWER
2OI S MAIN ST STE 23OO
SALT LAKE CITY UT 84111
E-MAIL: [e-mail]
DATA REQUEST RESPONSE CENTER
E.MAIL ONLY:
datarequest@ oacifi corp. com
[e-mail]
YVONNE HOGLE
ROCKY MOUNTAIN POWER
201 S MAIN ST STE 23OO
SALT LAKE CITY UT 84I11
E-MAIL: [e-mail]
CERTIFICATE OF SERVICE