20260220Notice_of_Filing_Order_No_36941.pdf

Office of the Secretary
Service Date
February 20,2026
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF INTERMOUNTAIN ) CASE NO. INT-G-25-08
GAS COMPANY'S 2025 INTEGRATED )
RESOURCE PLAN ) NOTICE OF FILING
NOTICE OF INTERVENTION
DEADLINE
NOTICE OF MODIFIED
PROCEDURE
ORDER NO. 36941
On December 23, 2025, Intermountain Gas Company ("Company") filed its 2025
Integrated Resource Plan ("2025 IRP") with the Idaho Public Utilities Commission
("Commission")and requested that the Commission issue an order acknowledging the Company's
2025 IRP.
The Commission now issues this Notice of Filing, sets deadlines by which interested
persons may intervene, and sets public comment and Company reply deadlines.
NOTICE OF FILING
YOU ARE HEREBY NOTIFIED that the Company's 2025 IRP is approximately one
hundred and sixty-six (166) pages, with approximately five hundred and fourteen (514) pages of
Exhibits. The 2025 IRP sets forth four substantive sections: (1)Executive Summary; (2)Demand;
(3) Supply and Delivery Resources; and (4) Optimization. 2025 IRP at ii-vi.
YOU ARE FURTHER NOTIFIED that the 2025 IRP outlines the Company's projected
customer demand over a five-year planning horizon, the resource strategies expected to meet that
demand, and the decision-making framework used to evaluate resource options. Id. at 1.
YOU ARE FURTHER NOTIFIED that the Company incorporates public participation as
an element of the 2025 IRP process, and in accordance with regulatory requirements,the Company
submits an updated IRP to the Commission every two years. Id.
NOTICE OF FILING
NOTICE OF INTERVENTION DEADLINE
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36941 1

YOU ARE FURTHER NOTIFIED that the 2025 IRP represents a point-in-time assessment
of anticipated conditions rather than a definitive roadmap for future resource decisions, as market,
regulatory, and operational factors may evolve over the planning period. Id.
YOU ARE FURTHER NOTIFIED that the Company's 2025 IRP, evaluates residential,
commercial, and large-volume customer demand growth under multiple scenarios and assessed
the resulting impacts on its distribution system using design-weather conditions. Id. at 5.
Forecasted demand is compared with existing natural gas delivery capabilities to identify the
potential magnitude and timing of system constraints, both system-wide and within specific areas
of interest. Id. The Company also evaluates a range of resources, solutions, and energy efficiency
measures to identify the most cost-effective and operationally feasible approaches to addressing
these constraints. Id.
YOU ARE FURTHER NOTIFIED that the Company's 2025 IRP and Exhibits are
available for public inspection during regular business hours at the Commission's office. The
Company's 2025 IRP and Exhibits are also available on the Commission's website at
www.puc.idaho.gov. Click on the"NATURAL GAS"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 72 and 73, IDAPA 31.01.01.072 and -.073.
Persons who wish to intervene as a party must file a Petition to Intervene no later than
twenty-one(21)days after the date of service of this Order. Such persons shall also provide the
Commission Secretary with their email address to facilitate further communications. After the
intervention deadline runs,the Commission Secretary shall issue a Notice of Parties that identifies
the parties and assigns exhibit numbers to each party. Once the Notice of Parties has issued,
Commission Staff shall informally confer with the Company and any intervening parties about
NOTICE OF FILING
NOTICE OF INTERVENTION DEADLINE
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36941 2

how to further process this case and shall then report back to the Commission on a proposed case
schedule.
YOU ARE FURTHER NOTIFIED that persons who would like to present their views
without parties' rights of participation and cross-examination do not have to intervene but may
present their views by submitting written comments to the Commission.
YOU ARE FURTHER NOTIFIED that the following people are designated as the
Company's representatives in this matter:
Preston N. Carter Michael Parvinen
Givens Pursley LLP Director—Regulatory Affairs
601 W. Bannock St. Intermountain Gas Company
Boise, ID 83702 P.O. Box 7608
prestoncarter(a),givenspursley.com Boise, ID 83707
stephaniew&givenspursley.com michael.parvinengcn cg com
NOTICE OF MODIFIED PROCEDURE
YOU ARE HEREBY NOTIFIED that the Commission has determined that the public
interest may not require a formal hearing in this matter, and that it will proceed under Modified
Procedure pursuant to the Commission's Rules of Procedure 201-204, IDAPA 31.01.01.201-.204.
The Commission notes that Modified Procedure and written comments have proven to be an
effective means for obtaining public input and participation.
YOU ARE FURTHER NOTIFIED that persons desiring to state a position on this IRP may
file a written comment explaining why the person supports or opposes the IRP.Persons who would
like a hearing must specifically request a hearing in their written comments and explain why
written comments alone are insufficient. Persons interested in filing written comments, must
do so by May 22, 2026. Comments must be filed through the Commission's website or by e-mail
unless computer access is unavailable.To comment electronically,please access the Commission's
website at http://www.puc.idaho.gov/. Click the "Case Comment Form" and complete the form
using the case number as it appears on the front of this document.
To file by e-mail, persons must e-mail the comments to the Commission Secretary and all
parties at the e-mail addresses listed below. Persons submitting a comment by e-mail must provide
their name, address, and the Case Number under which they are commenting. Persons submitting
a comment by e-mail also acknowledge that submitting a comment in an open case constitutes a
NOTICE OF FILING
NOTICE OF INTERVENTION DEADLINE
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36941 3

public record under Idaho Code § 74-101(13), and all information provided by such person is
available for public and media inspection.
If computer access is unavailable, then comments may be mailed to the Commission and
the Parties at the addresses below.Persons submitting a comment by mail must provide their name,
address, and the Case Number under which they are commenting. Persons submitting a comment
by mail also acknowledge that submitting a comment in an open case constitutes a public record
under Idaho Code§74-101(13),and all information provided by such person is available for public
and media inspection.
For the Idaho Public Utilities For the Company:
Commission:
Commission Secretary Preston N. Carter
Idaho Public Utilities Commission Givens Pursley LLP
P.O. Box 83720 601 W. Bannock St.
Boise, ID 83702-0074 Boise, ID 83702
secretaryg]2uc.idaho.9ov prestoncarter(a),givenspursley.com
stephaniewggivenspursle.
Michael Parvinen
Director—Regulatory Affairs
Intermountain Gas Company
P.O. Box 7608
Boise, ID 83707
michael.parvinengen-cc
YOU ARE FURTHER NOTIFIED that the Company must file any reply comments by
June 12, 2026.
YOU ARE FURTHER NOTIFIED that if no written comments or protests are received
within the time limit set, the Commission will consider this matter on its merits and enter its final
order without a formal hearing. If written comments are received within the time limit set, the
Commission will consider them and, in its discretion, may set the same for formal hearing.
ORDER
IT IS HEREBY ORDERED that persons desiring to intervene in this matter must file a
Petition to Intervene no later than twenty-one (21) days from the service date of this Order. Once
the deadline has passed, the Commission Secretary shall prepare and issue a Notice of Parties.
NOTICE OF FILING
NOTICE OF INTERVENTION DEADLINE
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36941 4

IT IS FURTHER ORDERED that this case be processed under Modified Procedure.
Persons interested in submitting written comments must do so by May 22, 2026. The Company
must file any reply comments by June 12, 2026.
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.
DONE by Order of the Idaho Public Utilities Commission at Boise, Idaho this 201h day of
February, 2026.
G
EDWARD LODGE, PR VDENT
J R. HAMMOND JR., COMMISSIONER
1 -
DAYN HA IE, COMMISSIONER
ATTEST:
WK1711.6reXTUinchez
Commission Secretary
I:\Legal\GAS\INTG2508_IRP\orders\INPG2508_ntc_app_int_mod_em.doex
NOTICE OF FILING
NOTICE OF INTERVENTION DEADLINE
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36941 5