20210616IPC to Staff 13-17.pdf

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An TDACORP Companv
DONOVAN E. WALKER
Lead Counee!
[e-mail]
June 16,2021
VIA ELECTRONIC iIAIL
Jan Noriyuki, Secretary
ldaho Public Utilities Commission
11331 West Chinden Blvd., Building 8
Suite 201-A
Boise, ldaho 83714
Re: Case No. IPC-E-21-09
ldaho Power Company'sApplication for Capacity Deficiency To Be Utilized
For Avoided Cost Calculations
Dear Ms. Noriyuki:
Attached for electronic filing is ldaho Power Company's Response to the Second
Production Requests of the Gommission Stafi in the above entitled matter.
Please handle the confidential information in accordance with the Protective
Agreement executed in this mafter.
!f you have any questions about the attached documents, please do not hesitate
to contact me.
Very truly youftr,
Zdatl\
Donovan E. Walker
DEW:cld
Enclosures
DONOVAN E. WALKER (lSB No. 5921)
ldaho Power Company
1221 West ldaho Street (83702)
P.O. Box 70
Boise, ldaho 83707
Telephone: [phone]
Facsimile: [phone]
[e-mail]
Attorney for ldaho Power Company
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF IDAHO POWER
COMPANY'S APPLICATION FOR
APPROVAL OF THE CAPACITY
DEFICIENCY TO BE UTILIZED FOR
AVOIDED COST CALCULATIONS.
CASE NO. !PC-E-21-09
IDAHO POWER COMPANY'S
RESPONSE TO THE SECOND
PRODUCTION REQUEST OF
THE COMMISSION STAFF
COMES NOW, ldaho Power Company ("ldaho Powe/' or "Compohy"), and in
response to the Second Production Request of the Commission Staff to ldaho Power
Company dated June 2, 2021, herewith submits the following information:
IDAHO POWER COMPANY'S RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF - 1
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REQUEST NO. 13: Page 3 of Mr. Ellsworth Direct Testimony in Case No. IPC-E-
21-12 states that Valmy Unit 2 is 134 MW. Attachment 1 of the Application in Case No.
IPC-E-21-09 statesthatValmy Unit2 is 136 MW. Table 1.1 (Prefened Portfolio additions
and coa! exits) shows that Valmy Unit 2 is 133 MW. Please reconcile the three amounts
and provide the correct capacity amount.
RESPONSE TO REQUEST NO. 13: For the Valmy Unit 2 Special Study, ldaho
Power reviewed all generation capacity inputs. The correct capacity value is 133.5 MW
(134MW with rounding).
The response to this Request is sponsored by Jared Hansen, Resource Planning
Leader of ldaho Power Company.
IDAHO POVVER COMPANY'S RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF -2
REQUEST NO. 14: The Preferred Portfolio in the Second Amended 2019 IRP
shows the total capacity of the Bridger units is 708 MW, whereas the Load and Resource
Balance in this case shows the total capacity is 703 MW. Please reconcile the two
amounts and provide the correct amount.
RESPONSE TO REQUEST NO. 14: For the Valmy Unit 2 Special Study, ldaho
Power reviewed all generation capacity inputs. The corect capacity value of the four
Bridger units is 708 MW.
The response to this Request is sponsored by Jared Hansen, Resource Planning
Leader of ldaho Power Company.
IDAHO POIA'ER COMPANY'S RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF - 3
REQUEST NO. 15: According to Response to Staffs Production Request No, 5,
exit from each North Valmy coal plantwas assumed to make available approximately 130
MW of transmission capacity for purchases from Southwest markets. The assumption
from the Second Amended 2019 IRP was that generation from North Valmy could be
replaced by market purchases from Southern market hubs. As stated on page 18 of the
2nd Amended 2019 lRP, (under the Valmy Unit 2 Exit Date section) and on pages 77-78
(under the Nevada Transmission without North Valmy section), these assumptions
require future testing. Please answer the following questions:
a. lt is assumed that the statement from the Amended 2019 lRP, as stated
above, applies regardless of whether Valmy Unit #2 exits in 2022 or 2025. Please verify
whether this is the case.
b. Does the assumption about the 130 MW increase in market purchases still
currently apply after 2025 based on the latest available information? Please explain.
c. lf the assumption does not still apply, please provide an update to the
market purchase amounts in the same format as provided in response to Production
Request No. 9.
RESPONSE TO REQUEST NO. 15:
a. Yes, it applies regardless of whether Valmy Unit #2 exits in 2A22 or 2025.
b. lt does not. This has been updated to reflect the most recently available
information, which is a change to a 50 MW increase in market purchases from
the previous 130 MW assumption.
c. Please see the attached Excel file.
IDAHO POWER COMPANY'S RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF - 4
The response to this Request is sponsorcd by Jarcd Hansen, Resouroe Planning
Leader of ldaho Power Company.
IDAHO POWER COMPANYS RESPONSE TO THE SECOND PRODUCT1ON REQUESTS OF THE
COMMISSION STAFF - 5
REQUEST NO. 16: Please provide the load forecast that was included in the
Application in the same annua! format as the updated forecast provided in response to
Production Request No. 11 and the change in the first deficit date due to the update in
the load forecast.
RESPONSE TO REQUEST NO. 16: The attached Confidential Excelfile provides
the load forecast that is included in the application in docket IPC-E-21-09 using the same
annual format used to respond to Production Request No. 11. Consistent with the deficit
methodology in IPC-E-21-09 with all variables held constant in the load and resour@
balance table except load, the first deficit date is July 2029.
The response to this Request is sponsored by Jordan Prassinos, Manager Load
Research and Forecasting of ldaho Power Company.
IDAHO POWER COMPANY'S RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF -6
REQUEST NO. {7: Please provide the Load and Resource Balance in Excel
format and the deficit dates for the following scenarios:
a. Hold all assumptions the same as filed in the original Application but with
updates for capacity amounts included in Production Request Nos. 7, 13 and 14.
b. Hold all assumptions the same as filed in the original Application, with
updates for capacity amounts included in Production Request Nos. 7, 13 and 14, and
market purchases from Production Request No. 15c (if assumption have changed).
c. Hold all assumptions the same as filed in the original Application, with
updates for capacity amounts included in Production Request Nos. 7,13 and 14, and with
the latest load forecast as provided in response to Production Request No. 11.
d. Hold all assumptions the same as filed in the original Application, with
updates for capacity amounts included in Production Request Nos. 7, 13 and 14, market
purchases from Production Request No. 15c (if assumption have changed), and the latest
load forecast as provided in response to Production Request No. 11.
RESPONSE TO REQUEST NO. 17: Please see the attached Confidential Excel
file. The first deficit dates for a-d above are August 2028, August 2025, July 2029, and
July 2026 respectively. The L&R was updated with the 50th percentile peak values from
the load forecast starting in January 2021.
The response to this Request is sponsored by Jared Hansen, Resource Planning
Leader of ldaho Power Company.
IDAHO POWER COMPANY'S RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF .7
Respectftrlly submitbd this 1S day of June 2021
fu€dattn-
DONOVAN E. WALKER
Attorney br ldaho Powsr Company
IDAI{O POVI'ER COMPANYS RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF .8
CERTIFICATE OF SERVICE
! HEREBY CERTIFY that on this 16th day of June2021, I served a true and conect
copy of the within and foregoing IDAHO POWER COMPANY'S RESPONSE TO THE
SECOND PRODUCTION REQUESTS OF THE COMMISSION STAFF upon the following
named parties by the method indicated below, and addressed to the following:
Matt Hunter
Deputy Attomey General
ldaho Public Utilities Commission
Po Box 83720
Boise, ldaho 83720-0074
Hand Delivered
U.S. Mail
Overnight Mail_ Fru(X Email: [e-mail]
Sandra D. Holmes, LegalAssistant
IDAHO POVVER COMPANY'S RESPONSE TO THE SECOND PRODUCTION REQUESTS OF THE
COMMISSION STAFF .9