20250603Notice_of_Application_Order_No_36620.pdf

Office of the Secretary
Service Date
June 3,2025
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF PACIFICORP'S ) CASE NO. PAC-E-25-12
APPLICATION FOR )
ACKNOWLEDGEMENT OF THE 2025 ) NOTICE OF APPLICATION
INTEGRATED RESOURCE PLAN )
NOTICE OF
INTERVENTION DEADLINE
ORDER NO. 36620
On December 31, 2024, Rocky Mountain Power, a division of PacifiCorp ("Company"),
filed a draft version of its 2025 Integrated Resource Plan ("IRP") with the Idaho Public Utilities
Commission("Commission")in Case No. PAC-E-24-13.The Company indicated that it would file
the final version of the 2025 IRP on March 31,2025.The Company requested that the Commission
postpone issuing a public notice and setting a schedule until the final version was filed. On March
31, 2025, the Company filed an application ("Application") with the Commission requesting
acknowledgment of the final version of its 2025 IRP. On May 22, 2025, the Commission issued
Order No. 36605, closing PAC-E-24-13, and opening this docket to consider the Company's 2025
IRR
The 2025 IRP outlines and analyzes the Company's strategy for meeting its customers'
projected energy needs. The Company submits an IRP to the Commission every two years, as
directed by Order No. 22299, Case No. U-1500-165. With this Order, the Commission provides
notice that the Company has filed the Application requesting acknowledgment of its 2025 IRP and
sets deadlines for interested persons to petition to intervene in the case.
NOTICE OF APPLICATION
YOU ARE HEREBY NOTIFIED that the Company files an IRP on a biennial basis with
the state utility commissions of Utah, Oregon,Washington,Wyoming,Idaho,and California.2025
IRP Vol. 1 at 19. The Company also represents that the 2025 IRP fulfills the Company's
commitment to develop a long-term resource plan that considers cost, risk, uncertainty, and the
long-run public interest.Id.
NOTICE OF APPLICATION
NOTICE OF INTERVENTION DEADLINE
ORDER NO. 36620 1

YOU ARE FURTHER NOTIFIED that the Company represents that regulatory staff,
advocacy groups, and other interested parties influenced the development of the 2025 IRP through
a collaborative public input process. Id.
YOU ARE FURTHER NOTIFIED that the Company represents that the 2025 IRP
enhances jurisdictional portfolio development and reporting in recognition of the increased focus
on individual state jurisdictional outcomes in recent integrated resource planning cycles. Id. The
Company also states that the 2025 IRP describes the fundamental methodologies used to arrive at
state-level initial portfolios and how they are subsequently integrated into a single plan. Id.
YOU ARE FURTHER NOTIFIED that the Company represents that its selection of the
2025 IRP preferred portfolio is supported by comprehensive data analysis and an extensive public
input process.Id. The Company also states that the 2025 IRP includes substantial new renewables,
facilitated by incremental transmission investments, demand-side management resources,
significant storage resources, and advanced nuclear. Id.
YOU ARE FURTHER NOTIFIED that the Company represents that the 2025 IRP
preferred portfolio is in addition to contracted resources.Id. The Company also represents that the
100 megawatt("MW")Hornshadow I Solar and 200 MW Hornshadow Solar II facilities are set to
come online in 2025, while two facilities combining solar and storage are set to come online in
2025 and 2026: Faraday with 525 MW solar and 150 MW storage and Green River with 400 MW
solar and 400 MW storage. Id. The Company further represents that Oregon's Community Solar
Program has ten small-scale solar facilities scheduled to come online in 2025 and 2026, totaling
approximately 18 MW.Id.
YOU ARE FURTHER NOTIFIED that the Company represents that the 2025 IRP
preferred portfolio includes the 500 MW advanced nuclear Natrium demonstration project,
anticipated to achieve online status by summer 2030. Id. Additionally, the Company states that
over the 21-year planning horizon, the 2025 IRP preferred portfolio includes 6,379 MW of new
wind and 5,492 MW of new solar, and 7,668 MW of new storage resources. Id. The Company
states that the new storage includes five battery facilities totaling 520 MW projected to come online
ahead of the peak summer season in 2026: Dominguez BESS (200 MW), Enterprise BESS (80
MW),Escalante BESS (80 MW), Granite Mountain BESS (80 MW) and Iron Springs BESS (80
MW).Id. at 19-20.
NOTICE OF APPLICATION
NOTICE OF INTERVENTION DEADLINE
ORDER NO. 36620 2

YOU ARE FURTHER NOTIFIED that the Company represents that the 2025 IRP
preferred portfolio provides details of various additional transmission projects, including the
transfer capability and estimated cost of each project. Id. at 6, 20, 79-97.
YOU ARE FURTHER NOTIFIED that the Application and all supporting documents have
been filed with the Commission and are available for public inspection during regular business
hours at the Commission's office. These documents are also available on the Commission's
website at www.puc.idaho.gov. Click on the "ELECTRIC" icon, select "Open Cases," and click
on the case number as shown on the front of this document.
YOU ARE FURTHER NOTIFIED that all proceedings in this case will be held pursuant
to the Commission's jurisdiction under Title 61 of the Idaho Code, and that all proceedings in this
matter will be conducted pursuant to the Commission's Rules of Procedure, IDAPA 31.01.01.000
et seq.
NOTICE OF INTERVENTION DEADLINE
YOU ARE FURTHER NOTIFIED that persons desiring to intervene in this matter to
obtain parties' rights of participation must file a Petition to Intervene with the Commission
pursuant to this Commission's Rules of Procedure 71-73, IDAPA 31.01.01.072-073. Persons
who wish to intervene as a party must file a Petition to Intervene no later than 21 days after
the date of service of this Order. Persons desiring to present their views without parties' rights
of participation do not have to intervene and may present their comments without prior notification
to the Commission or the parties.
YOU ARE FURTHER NOTIFIED that the Commission Secretary shall issue a Notice of
Parties after the deadline for intervention has passed. The Notice of Parties shall assign exhibit
numbers to each party in this proceeding.
YOU ARE FURTHER NOTIFIED that once the Notice of Parties is issued, Commission
Staff("Staff')will informally confer with the parties to discuss a schedule to process this case and
other issues as may be raised by the parties.
YOU ARE FURTHER NOTIFIED that the following persons are designated as the
Company's representatives in this matter:
NOTICE OF APPLICATION
NOTICE OF INTERVENTION DEADLINE
ORDER NO. 36620 3

Mark Alder Data Request Response Center
Joseph Dallas PacifiCorp
Rocky Mountain Power 825 NE Multnomah, Suite 2000
1407 West North Temple, Suite 330 Portland, OR 97232
Salt Lake City, UT 84116 datarequest&pacificorp.com
mark.alder(d),pacificorp.com irp(&,,pacificorp.com
joseph.dallas(kpacificorp.com
ORDER
IT IS HEREBY ORDERED that persons desiring to intervene in this case for the purpose
of obtaining parties' rights of participation must file a Petition to Intervene with the Commission,
under Rules 71-73, IDAPA 31.01.01.071-073, no later than 21 days after the service date of this
Order.
IT IS FURTHER ORDERED that, after the Secretary issues a Notice of Parties, Staff will
informally confer with the parties to discuss the appropriate scheduling of this case.
IT IS FURTHER ORDERED that parties comply with Order No. 35375, issued April 21,
2022. Generally, all pleadings should be filed with the Commission electronically and will be
deemed timely filed when received by the Commission Secretary.See Rule 14.02. Service between
parties should continue to be accomplished electronically when possible. However, voluminous
discovery-related documents may be filed and served on CD-ROM or a USB flash drive.
NOTICE OF APPLICATION
NOTICE OF INTERVENTION DEADLINE
ORDER NO. 36620 4

DONE by Order of the Idaho Public Utilities Commission at Boise, Idaho this 3rd day of
June 2025.
G
EDWARD LODG , P. SIDENT
R. HAMMOND JR., COMMISSIONER
1
DAYN HA DIE, COMMISSIONER
ATTEST:
L00--ce'.,
MWIkI-B i S z
Commission Secre
I:\Legal\ELECTRIC\PAC-E-25-12_IRP\orders\PACE2512_Ntc_App_Int j I.docx
NOTICE OF APPLICATION
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