20251030Notice_of_Proposed_Settlement_Order_No_36824.pdf

Office of the Secretary
Service Date
October 30,2025
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF INTERMOUNTAIN ) CASE NO. INT-G-25-02
GAS COMPANY'S APPLICATION FOR )
AUTHORITY TO INCREASE ITS RATES ) NOTICE OF PROPOSED
AND CHARGES FOR NATURAL GAS ) SETTLEMENT
SERVICE IN THE STATE OF IDAHO )
NOTICE OF AMENDED
SCHEDULE
NOTICE OF CUSTOMER
HEARING
NOTICE OF PUBLIC COMMENT
DEADLINE
NOTICE OF TECHNICAL
HEARING
ORDER NO. 36824
On May 30, 2025, Intermountain Gas Company ("Company") applied to the Idaho Public
Utilities Commission ("Commission") requesting authority to increase its rates and charges for
natural gas service in the state of Idaho ("Application").
On June 13, 2025, the Commission issued a Notice of Application, Notice of Suspension
of Proposed Effective Date, and Notice of Intervention Deadline. Order No. 36639. The
Commission granted intervention to Alliance of Western Energy Consumers and Micron
Technology, Inc. (collectively, "Intervenors"). Order Nos. 36654, 36676. On July 22, 2025, the
Commission issued a Notice of Parties.
On August 19,2025,the Commission issued a Notice of Schedule,Notice of Virtual Public
Workshop, Notice of Customer Hearing, Notice of Public Comment Deadline, and Notice of
Technical Hearing. Order No. 36723.
On September 4-5, 2025, Commission Staff("Staff'), the Company, and all Intervenors
participated in a settlement conference. At the Commission's September 16, 2025, decision
meeting, Staff informed the Commission that Staff believed a settlement had been reached in
NOTICE OF PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 1

principle, and Staff requested that the Commission vacate the written testimony deadlines,
customer hearing date, and public comment deadline until such time as a proposed settlement was
filed for Commission approval,or the Commission was informed that a proposed settlement would
not be filed. On September 30, 2025, the Commission issued an order vacating the written
testimony deadlines, the customer hearing date, and public comment deadline. Order No. 36783.
On October 20, 2025, the Company filed a Stipulation and Settlement ("Proposed
Settlement") and a Motion for Approval of Stipulation and Settlement ("Motion"). The Proposed
Settlement was signed by Staff, the Company, and all Intervenors (collectively"the Parties").
We now issue this order providing notice of the Proposed Settlement,an amended schedule
for the case, reset testimony deadlines, a rescheduled customer hearing at which customers of the
Company can testify before the Commission, a reset public comment deadline, and updated
participation information for the previously scheduled technical hearing.
NOTICE OF PROPOSED SETTLEMENT
YOU ARE HEREBY NOTIFIED that under the Proposed Settlement, the Company's
authorized revenue requirement would increase by $13 million reflecting an increase of
approximately 10.4 percent. Proposed Settlement at 2.
YOU ARE FURTHER NOTIFIED that the components of the revenue requirement
include: (1) a 9.5 percent Return on Equity; (2)a cost of debt of 4.956 percent with a debt to equity
ratio of 50 percent equity and 50 percent debt, resulting in an overall rate of return of 7.23 percent
on the total cost of capital; and(3) a total rate base of$524,773,059. Id. at 3.
YOU ARE FURTHER NOTIFIED that if the Proposed Settlement is approved as filed,the
average residential customer's bill would increase by $2.45 per month, or 6.02%, and the average
general service commercial customer's bill would increase by $4.42 or 2.46%. Exhibit 2 to
Settlement Agreement.
YOU ARE FURTHER NOTIFIED that the Proposed Settlement includes an updated cost
of service, rate design and rate spread, including an increase in the monthly residential customer
charge to $11.00; an increase in the monthly general service customer charge to $23.00; and
increase in the monthly T-4 Transport Firm customer charge to $275.00. Proposed Settlement at
NOTICE OF PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 2

3. The Parties agreed that the customer charge for all remaining classes would be as filed in the
Company's Application.Id.
YOU ARE FURTHER NOTIFIED that prior to filing the Company's next general rate
case, the Company and Staff agreed to hold workshops to discuss: (1) a process to ensure utility
customers are insulated from the costs of renewable natural gas projects; (2) issues concerning
separation of project costs and Company betterment costs associated with mainline extensions;
and(3) the components of the Company's cost of service study and related matters.Id. at 4-5.
YOU ARE FURTHER NOTIFIED that prior to filing the Company's next general rate
case, the Company and Staff agreed to meet to discuss notices provided to paperless billing
customers. Id. at 6.
YOU ARE FURTHER NOTIFIED that under Commission Rule 275, "[p]roponents of a
proposed settlement carry the burden of showing that the settlement is reasonable, in the public
interest, or otherwise in accordance with law or regulatory policy." IDAPA 31.01.01.275.
YOU ARE FURTHER NOTIFIED that the Commission is not bound by the Proposed
Settlement reached by the Parties. The Commission will independently review any proposed
settlement to determine whether the settlement is just, fair, and reasonable, and in the public
interest, or otherwise in accordance with law or regulatory policy. The Commission may accept a
settlement, reject a settlement, or state additional conditions under which a settlement will be
accepted. IDAPA 31.01.01.274—.276.
YOU ARE FURTHER NOTIFIED that if the Commission rejects any part or all of the
Proposed Settlement or imposes any additional material conditions on its approval, each signing
party reserves the right to withdraw from the Proposed Settlement within fourteen days of such
order.
YOU ARE FURTHER NOTIFIED that the Settlement in Case.No. INT-G-25-02 has been
filed with the Commission and, along with the rest of the record, is available for public inspection
during regular business hours at the Commission's office or on the Commission's website at
www.puc.idaho.gov. Click on the "NATURAL GAS" tab in the left-hand column of the home
page, click"Open Cases," and select the case number as shown on the front of this document.
NOTICE OF PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 3

YOU ARE FURTHER NOTIFIED 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 AMENDED SCHEDULE
YOU ARE FURTHER NOTIFIED that the Commission establishes the following
amended procedural schedule:
• November 5, 2025: All Party Written Testimony Deadline
• November 13, 2025: Customer Hearing in Boise starting at 4:30 p.m. and ending
at 7:30 p.m. (MT)
• November 13, 2025: Public Comment Deadline
• November 17, 2025: Rebuttal Testimony Deadline
• November 18, 2025: Technical Hearing in Boise starting at 9:00 a.m. and ending
at 5:00 p.m. (MT)
• November 19, 2025: Technical Hearing continued as needed starting at 9:00 a.m.
and ending at 5:00 p.m. (MT)
YOU ARE FURTHER NOTIFIED that all testimony and exhibits in this matter must
comport with the requirements of Commission Rules of Procedure 231 and 267. IDAPA
31.01.01.231 and.267.
YOU ARE FURTHER NOTIFIED 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 CUSTOMER HEARING
YOU ARE FURTHER NOTIFIED that the Commission will hold a customer hearing in
this matter in Boise, Idaho, on Thursday, November 13, 2025, starting at 4:30 p.m. (MT) and
ending at 7:30 p.m., or after all customer testimony has been taken, whichever comes first.
The Commission, in its discretion, may adjust the scheduled times as necessary. The customer
hearing will be held at the Idaho Public Utilities Commission, 11331 W. Chinden Boulevard,
Building 8, Suite 201-A, Boise, ID 83714. Persons attending the hearing in-person will have an
opportunity to provide testimony. Persons may also participate in the hearing via telephone by
calling 1-208-985-2810 then entering the conference ID number of. 661071763#when prompted.
NOTICE OF PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 4

NOTICE OF PUBLIC COMMENT DEADLINE
YOU ARE FURTHER NOTIFIED that the Commission seeks comments from the public
on the Proposed Settlement. Persons desiring to state a position on the Application may file a
written comment explaining why the person supports or opposes the Application. Persons must
file comments by November 13, 2025. 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 home page at 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.
YOU ARE FURTHER NOTIFIED that to file by e-mail, persons must e-mail the
comments to the Commission Secretary and the Company 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 public record under Idaho Code § 74-101
(13), and all information provided by such person is available for public and media inspection.
YOU ARE FURTHER NOTIFIED that if computer access is unavailable, then comments
may be mailed to the Commission and Company 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 Commission: For the Company:
Commission Secretary Preston N. Carter
Idaho Public Utilities Commission Megann E. Meier
P.O. Box 83720 Givens Pursley, LLP
Boise, ID 83702-0074 601 W. Bannock Street
secretga&puc.idaho.gov Boise, ID 83702
prestoncarter(a),givenspurs ley.com
Street Address for Express Mail: mem( aivenspursle.
stephaniewggivenspursl ey.com
11331 W. Chinden Blvd.
Building 8, Suite 201-A
Boise, ID 83714
NOTICE OF PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 5

NOTICE OF TECHNICAL HEARING
YOU ARE HEREBY NOTIFIED that the Commission will conduct a technical hearing in
this matter on Tuesday, November 18, 2025, starting at 9:00 a.m. (MT) and ending at 5:00
p.m. The technical hearing shall continue as necessary on Wednesday, November 19, 2025,
starting at 9:00 a.m. (MT) and ending at 5:00 p.m. The technical hearing will be held at the
Idaho Public Utilities Commission, 11331 W. Chinden Boulevard, Building 8, Suite 201-A,
Boise, ID 83714. A technical hearing is an opportunity for the parties to the case to present
witnesses, testimony, and exhibits. IDAPA 31.01.01.241.04. Persons interested in listening to or
watching the testimony and presentations at the technical hearing may attend the meeting either
online or by telephone.
To participate online,please visit teams.live.com; click on the"Join a meeting" option on
the upper left side of the page; type 278 500 464 709 in the "Meeting ID" window; then type
zQ9S5XU6 in the "Meeting passcode"window.
To participate by telephone, call 1-208-985-2810 then entering the conference ID number
of: 737 135 124#when prompted.
YOU ARE FURTHER NOTIFIED that all hearings and prehearing conferences in this
matter will be held in facilities meeting the accessibility requirements of the Americans with
Disabilities Act ("ADA"). Persons needing the help of a sign language interpreter or other
assistance in order to participate in or to understand testimony and argument at a public hearing
may ask the Commission to provide a sign language interpreter or other assistance at the hearing.
The request for assistance must be received at least five working days before the hearing by
contacting the Commission Secretary at:
IDAHO PUBLIC UTILITIES COMMISSION
PO BOX 83720
BOISE, IDAHO 83702-0074
Telephone: [phone]
Facsimile: [phone]
Email: secretgakpuc.idaho._og_v
YOU ARE FURTHER NOTIFIED that the record in this matter is available for public
inspection during regular business hours at the Commission's office. These documents are also
NOTICE OF PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 6

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.
ORDER
IT IS HEREBY ORDERED that the Commission amends the procedural schedule as set
forth above.
IT IS FURTHER ORDERED that written testimony in support of, or opposition to, the
Proposed Settlement is due on November 5, 2025. The Company shall have until November 17,
2025, to file any rebuttal written testimony.
IT IS FURTHER ORDERED that the Commission shall hold a customer hearing in Boise,
Idaho, on Thursday, November 13, 2025, starting at 4:30 p.m. and ending at 7:30 p.m. (MT), or
after all customer testimony has been taken, whichever comes first.
IT IS FURTHER ORDERED that persons desiring to submit public written comments
must do so by November 13, 2025.
IT IS FURTHER ORDERED that the Commission will conduct a technical hearing in this
matter on Tuesday, November 18, 2025, starting at 9:00 a.m. and ending at 5:00 p.m. (MT). The
technical hearing shall continue as necessary on Wednesday,November 19, 2025, starting at 9:00
a.m. and ending at 5:00 p.m. (MT).
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 PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 7

DONE by Order of the Idaho Public Utilities Commission at Boise, Idaho this 30ffi day of
October 2025. /
G
Grp
DWARD LODGE, RE 'I ENT
HN R. HAMMOND JR., COMMISSIONER
DAYN HARDI , COMMISSIONER
ATTEST:
Lau a Calderon Robles
Interim Commission Secretary
I:\Legal\GAS\INTG2502_GRC\orders\Ntc_PSet_Sch_CH_TH jl jh.docx
NOTICE OF PROPOSED SETTLEMENT
NOTICE OF AMENDED SCHEDULE
NOTICE OF CUSTOMER HEARING
NOTICE OF PUBLIC COMMENT DEADLINE
NOTICE OF TECHNICAL HEARING
ORDER NO. 36824 8