HomeMy WebLinkAbout20221227Application.pdfDecember 27, 2022
Ms. Jan Noriyuki
Commission Secretary
Idaho Public Utilities Commission
P.O. Box 83720
Boise, ID 83720-0074
RE: Case No. INT-G-22-08
Dear Ms. Noriyuki:
Attached for consideration by this Commission is an electronic submission of Intermountain Gas
Company’s Interim Purchased Gas Cost Adjustment Filing with prices proposed to be effective on
February 1, 2023.
If you should have any questions regarding the attached, please don’t hesitate to contact me at (208)
377-6015.
Sincerely,
Lori A. Blattner
Director, Regulatory Affairs
Intermountain Gas Company
Enclosure
cc: Mark Chiles
Preston Carter
RECEIVEDTuesday, December 27, 2022 4:04:46 PM
IDAHO PUBLIC
UTILITIES COMMISSION
INTERMOUNTAIN GAS COMPANY
CASE NO. INT-G-22-08
APPLICATION
AND EXHIBITS
In the Matter of the Application of INTERMOUNTAIN GAS COMPANY
For Authority to Change its Prices on February 1, 2023
(Interim Purchased Gas Cost Adjustment Filing)
INTERMOUNTAIN GAS COMPANY’S APPLICATION - 2
Preston N. Carter, ISB No. 8462
Givens Pursley LLP
601 W. Bannock St.
Boise, Idaho 83702
Telephone: (208) 388-1200
Attorneys for Intermountain Gas Company
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
In the Matter of the Application of
INTERMOUNTAIN GAS COMPANY
for Authority to Change its Prices
Case No. INT-G-22-08
APPLICATION
Intermountain Gas Company (“Intermountain” or “Company”), a subsidiary of MDU
Resources Group, Inc. with general offices located at 555 South Cole Road, Boise, Idaho, pursuant
to the Rules of Procedure of the Idaho Public Utilities Commission (“Commission”), hereby
requests authority, pursuant to Idaho Code Sections 61-307 and 61-622, to place into effect
February 1, 2023 new rate schedules which will increase rates for its RS, GS-1, IS-R, IS-C, and LV-
1 customer classes. The proposed changes will increase the Company’s annualized revenues by
approximately $56 million, however, Intermountain’s earnings will not be increased as a result of
the proposed changes in prices and revenues. Exhibit No. 1 is a summary of the overall price
changes by class of customer and is attached and incorporated by reference. Intermountain’s current
rate schedules showing proposed changes are attached as Exhibit No. 2 and incorporated by
reference. The resulting proposed rate schedules are attached as Exhibit No. 3 and incorporated by
reference. Exhibit No. 4 outlines the derivation of the Proposed Weighted Average Cost of Gas
(“WACOG”) and is incorporated by reference.
Please address communications regarding this Application to:
Lori A. Blattner
Director – Regulatory Affairs
Intermountain Gas Company
INTERMOUNTAIN GAS COMPANY’S APPLICATION - 3
Post Office Box 7608
Boise, Idaho 83707
Lori.Blattner@intgas.com
and
Preston N. Carter
Givens Pursley LLP
601 W. Bannock St.
Boise, Idaho 83702
prestoncarter@givenspursley.com
stephaniew@givenspursley.com
In support of this Application, Intermountain alleges and states as follows:
I.
Intermountain is a gas utility, subject to the jurisdiction of the Commission, engaged in the
sale of and distribution of natural gas within the State of Idaho under authority of Commission
Certificate No. 219, issued December 2, 1955, as amended and supplemented by Order No. 6564,
dated October 3, 1962.
Intermountain provides natural gas service to the following Idaho communities and counties
and adjoining areas:
Ada County - Boise, Eagle, Garden City, Kuna, Meridian, and Star;
Bannock County - Arimo, Chubbuck, Inkom, Lava Hot Springs, McCammon, and Pocatello;
Bear Lake County - Georgetown and Montpelier;
Bingham County - Aberdeen, Basalt, Blackfoot, Firth, Fort Hall, Moreland/Riverside, and Shelley;
Blaine County - Bellevue, Hailey, Ketchum, and Sun Valley;
Bonneville County - Ammon, Idaho Falls, Iona, and Ucon;
Canyon County - Caldwell, Greenleaf, Middleton, Nampa, Parma, and Wilder;
Caribou County - Bancroft, Grace, and Soda Springs;
Cassia County - Burley, Declo, Malta, and Raft River;
Elmore County - Glenns Ferry, Hammett, and Mountain Home;
Fremont County - Parker, and St. Anthony;
Gem County - Emmett;
Gooding County - Gooding and Wendell;
Jefferson County - Lewisville, Menan, Rigby, and Ririe;
Jerome County - Jerome;
Lincoln County - Shoshone;
Madison County - Rexburg, and Sugar City;
Minidoka County - Heyburn, Paul, and Rupert;
Owyhee County - Bruneau and Homedale;
Payette County - Fruitland, New Plymouth, and Payette;
INTERMOUNTAIN GAS COMPANY’S APPLICATION - 4
Power County - American Falls;
Twin Falls County - Buhl, Filer, Hansen, Kimberly, Murtaugh, and Twin Falls;
Washington County - Weiser.
Intermountain's properties in these locations consist of transmission pipelines, liquefied
natural gas storage facilities, compressor stations, distribution mains, services, meters and
regulators, and general plant and equipment.
II.
With this Application, Intermountain seeks to pass through to each of its customer classes
changes in gas related costs resulting from an increase in the Company’s WACOG. If approved,
these changes would result in a price increase to Intermountain’s RS, GS-1, IS-R, IS-C, and LV-1
customer classes, which are affected by and subject to Intermountain’s Rate Schedule PGA, initially
approved by this Commission in Order No. 26109, Case No. INT-G-95-1, and additionally
approved through subsequent proceedings.
III.
The Commission approved the current prices related to the cost of gas in Order No. 35538,
Case No. INT-G-22-04.
IV.
Over the last several months, natural gas prices have climbed across the United States
including in the three supply basins that affect the Company’s weighted average cost of
gas. Several factors contribute to this increase. First, the colder than normal winter weather from
mid-November to date is putting upward pressure on daily and future winter month pricing as
demand has exceed expectations. In addition, the must flow operational flow order (“OFO”) on the
south end of the Northwest Pipeline system has provided an incentive for Sumas and Stanfield
suppliers to command higher prices knowing that gas must be purchased and flowed south. Finally,
certain pipeline maintenance and constraints on southwestern pipelines are also causing an
INTERMOUNTAIN GAS COMPANY’S APPLICATION - 5
increased demand of gas from Alberta and the Rockies to serve California load, thus creating further
upward pressure on prices. All of these factors have combined to significantly increase the forecast
WACOG from what was approved in Order No. 35538.
V.
Commission Order No. 35538 directed the Company to “notify the Commission promptly if
an interim filing is needed.” The Company respectfully submits that an interim filing is needed at
this time to update the Company’s currently approved WACOG rate to better reflect current natural
gas cost levels and reduce the amount of deferred gas costs that will need to be included in the
Company’s regular Purchased Gas Cost Adjustment (“PGA”) filing.
VI.
The forecast WACOG based on actual purchases through December 21, 2022 and forecasts
through September 30, 2023 is $0.66399. This compares to $0.39216 per therm currently included
in the Company’s tariffs. Because so much of the year remains a forecast, the Company proposes to
mitigate the increase by reducing it in half. The resulting proposed WACOG of $0.52808 can be
seen on Exhibit No. 4, Page 1, Column (b), Line 6. Any variances between the proposed WACOG
of $0.52808 and actual gas costs for the remaining months would be deferred until the Company’s
2023 PGA filing. Line Break Pricing has been updated to reflect the proposed changes as shown on
Exhibit No. 2, page 2, Line 19.
VII.
Intermountain believes that the WACOG rate proposed in this Application, subject to the
effect of actual supply and demand and based on current market conditions, provides today’s most
reasonable forecast of gas costs for the October 2022 – September 2023 period, and reflects a just,
fair, and equitable change in gas costs to Intermountain’s RS, GS-1, IS-R, IS-C, and LV-1
INTERMOUNTAIN GAS COMPANY’S APPLICATION - 6
customers. Although the proposed WACOG reflects a significant price increase for all customers,
the Company is hopeful that this interim filing will mitigate the build-up of deferrals that would
need to be collected through the 2023 PGA filing.
VIII.
The Company does not propose to change its gas transportation cost or temporary purchased
gas cost adjustment rates at this time. These rates, along with an updated estimate of the WACOG
rate, will be adjusted as part of the Company’s regular 2023 PGA filing.
IX.
This Application has been brought to the attention of Intermountain’s customers through a
Customer Notice and by a Press Release sent to daily and weekly newspapers, and major radio and
television stations in Intermountain’s service area. The Press Release and Customer Notice are
attached and incorporated by reference.
X.
Intermountain requests that this matter be handled under modified procedure pursuant to
Rules 201-204 of the Commission’s Rules of Procedure. Intermountain stands ready for immediate
consideration of this matter.
INTERMOUNTAIN GAS COMPANY’S APPLICATION - 7
XI.
Intermountain respectfully petitions the Idaho Public Utilities Commission as follows:
a.That the proposed rate schedules submitted as Exhibit No. 3 be approved without
suspension and made effective as of February 1, 2023 in the manner shown on Exhibit
No. 3,
b. That this Application be heard and acted upon without hearing under modified procedure,
and
c. For such other relief as this Commission may determine proper.
DATED: December 27, 2022.
INTERMOUNTAIN GAS COMPANY GIVENS PURSLEY LLP
B B
Lori A. Blattne Preston N. Carte
Director – Regulatory Affairs Attorney for Intermountain Gas Company
EXHIBIT NO. 1
CASE NO. INT-G-22-08
INTERMOUNTAIN GAS COMPANY
SUMMARY OF PRICE CHANGES
(1 page)
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Exhibit No. 1 Case No. INT-G-22-08 Intermountain Gas Company Page 1 of 1
EXHIBIT NO. 2
CASE NO. INT-G-22-08
INTERMOUNTAIN GAS COMPANY
CURRENT TARIFFS
Showing Proposed Price Changes
(8 pages)
INTERMOUNTAIN GAS COMPANY
Comparison of Proposed February 1, 2023 Prices
To Currently Approved Prices
Line
No.Rate Class
Currently
Approved
Prices
Proposed
Adjustment
Proposed
February 1, 2023
Prices
(a)(b)(c)(d)
1 RS 0.73392$ 0.13592$ 0.86984$
2 GS-1
3 Block 1 0.75436 0.13592$ 0.89028
4 Block 2 0.73088 0.13592 0.86680
5 Block 3 0.70821 0.13592 0.84413
6 Block 4 0.63965 0.13592 0.77557
7 CNG Fuel
8 Block 1 0.70501 0.13592 0.84093
9 Block 2 0.63645 0.13592 0.77237
10 IS-R (1)0.73618 0.13592$ 0.87210
11 IS-C (2)
12 Block 1 0.75116 0.13592$ 0.88708
13 Block 2 0.72768 0.13592 0.86360
14 Block 3 0.70501 0.13592 0.84093
15 Block 4 0.63645 0.13592 0.77237
16 LV-1
17 Demand Charge 0.30000 - 0.30000
18 Block 1 0.54173 0.13592$ 0.67765
19 Block 2 0.52384 0.13592 0.65976
20 Block 3 0.44733 0.13592 0.58325
21 T-3
22 Block 1 0.03771 - 0.03771
23 Block 2 0.01487 - 0.01487
24 Block 3 0.00496 - 0.00496
25 T-4
26 Demand Charge 0.28032 - 0.28032
27 Block 1 0.02395 - 0.02395
28 Block 2 0.00847 - 0.00847
29 Block 3 0.00260 - 0.00260
(1)
(2)The IS-C price is based on the GS-1 price and receives the same PGA adjustments
The IS-R price is based on the RS price and receives the same PGA adjustments, except for the Residential
Energy Efficiency Credit which was calculated on Exhibit No. 14, Line 3, Column (c) of Case No. INT-G-22-04
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 1 of 8
INTERMOUNTAIN GAS COMPAN
Summary of Proposed Tariff Components and Line Break Pricin
Line
No.Description RS GS-1 LV-1
(a)(b)(c)(d)
1 Cost of Gas:
2 Temporary Purchased Gas Cost Adjustment(1)(0.00057)$ 0.01445$ 0.03247$
3 Weighted Average Cost of Gas 0.52808 0.52808 0.52808
4 Gas Transportation Cost (1)0.16364 0.15990 0.08710
5 Total Proposed Cost of Gas 0.69115$ 0.70243$ 0.64765$
6 Distribution Cost: (2)
7 Block 1 0.16305$ 0.18465$ 0.03000$
8 Block 2 0.16117 0.01211
9 Block 3 0.13850 0.00307
10 Block 4 0.06994
11 Demand Charge 0.30000
12 Energy Efficiency Charge 0.01564 (3)0.00320 (4)
13 Proposed Prices:
14 Block 1 0.86984$ 0.89028$ 0.67765$
15 Block 2 0.86680 0.65976
16 Block 3 0.84413 0.58325
17 Block 4 0.77557
18 Demand Charge 0.30000
19 Line Break Pricing (5)0.69172$
(1)See Case No. INT-G-22-04
(2)See Case No. GNR-U-18-01
(3)See Case No. INT-G-22-05
(4)See Case No. INT-G-20-04
(5)Sum of Lines 3 and 4, Column (b)
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 2 of 8
I.P.U.C. Gas Tariff
Rate Schedules
Tenth Revised(OHYHQWK Sheet No. 1 (Page 1 of 1)
Name
of Utilit Intermountain Gas Company
Issued by: Intermountain Gas Company
Title: Director – Regulatory Affairs By: Lori A. Blattner
Effective: October 1, 2022 )HEUXDU\
Rate Schedule RS
RESIDENTIAL SERVICE
APPLICABILITY:
Applicable to any customer using natural gas for residential purposes.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $5.50 per bill
Per Therm Charge: $0.73392*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment ($0.00057)
2) Weighted average cost of gas $0.39216
3) Gas transportation cost $0.16364
Distribution Cost: $0.16305
EE Charge: $0.01564
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
ENERGY EFFICIENCY CHARGE ADJUSTMENT:
This tariff is subject to an adjustment for costs related to the Company’s Energy Efficiency program as
provided for in Rate Schedule EEC-RS. The Energy Efficiency Charge is separately stated on customer bills.
SERVICE CONDITIONS:
All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff, of
which this rate schedule is a part.
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538 & 35539
Jan Noriyuki Secretary
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 3 of 8
I.P.U.C. Gas Tariff
Rate Schedules
Sixty-Fifth Revised6L[W\6L[WK Sheet No. 3 (Page 1 of 2)
Name
of Utilit Intermountain Gas Company
Issued by: Intermountain Gas Company
Title: Director – Regulatory AffairsBy: Lori A. Blattner
Effective: October 1, 2022 )HEUXDU\
Rate Schedule GS-1
GENERAL SERVICE
APPLICABILITY:
Applicable to customers whose requirements for natural gas do not exceed 2,000 therms per day, at any point
on the Company's distribution system. Requirements in excess of 2,000 therms per day may be allowed at
the Company’s discretion.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $9.50 per bill
Per Therm Charge: Block One: First 200 therms per bill @ $0.75436*
Block Two: Next 1,800 therms per bill @ $0.73088*
Block Three: Next 8,000 therms per bill @ $0.70821*
Block Four: Over 10,000 therms per bill @ $0.63965*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445
2) Weighted average cost of gas $0.39216
3) Gas transportation cost $0.15990
Distribution Cost: Block One: First 200 therms per bill @ $0.18465
Block Two: Next 1,800 therms per bill @ $0.16117
Block Three: Next 8,000 therms per bill @ $0.13850
Block Four: Over 10,000 therms per bill @ $0.06994
EE Charge: $0.00320
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538
Jan Noriyuki Secretary
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 4 of 8
I.P.U.C. Gas Tariff
Rate Schedules
Sixty-Fifth Revised Sheet No. 3 (Page 2 of 2)
Name
of Utilit Intermountain Gas Company
Issued by: Intermountain Gas Company
Title: Director – Regulatory Affairs By: Lori A. Blattner
Effective: October 1, 2022 )HEUXDU\
Rate Schedule GS-1
GENERAL SERVICE
(Continued)
For separately metered deliveries of gas utilized solely as Compressed Natural Gas Fuel in vehicular internal
combustion engines.
Customer Charge: $9.50 per bill
Per Therm Charge: Block One: First 10,000 therms per bill @ $0.70501*
Block Two: Over 10,000 therms per bill @ $0.63645*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445
2) Weighted average cost of gas $0.39216
3) Gas transportation cost $0.15990
Distribution Cost: Block One: First 10,000 therms per bill @ $0.13850
Block Two: Over 10,000 therms per bill @ $0.06994
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
ENERGY EFFICIENCY CHARGE ADJUSTMENT:
This tariff is subject to an adjustment for costs related to the Company’s Energy Efficiency program as
provided for in Rate Schedule EEC-GS. The Energy Efficiency Charge is not applicable to gas utilized solely
as Compressed Natural Gas Fuel in vehicular internal combustion engines. The Energy Efficiency Charge is
separately stated on customer bills.
SERVICE CONDITIONS:
1. All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff,
of which this rate schedule is a part.
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538
Jan Noriyuki Secretary
6L[W\6L[WK
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 5 of 8
I.P.U.C. Gas Tariff
Rate Schedules
Twenty-First Revised7ZHQW\6HFRQG Sheet No. 4 (Page 1 of 2)
Name
of Utilit Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: October 1, 2022
Rate Schedule IS-R
RESIDENTIAL INTERRUPTIBLE SNOWMELT SERVICE
APPLICABILITY:
Applicable to any residential customer otherwise eligible to receive service under Rate Schedule RS who
has added natural gas snowmelt equipment after 6/1/2010. The intended use of the snowmelt equipment is
to melt snow and/or ice on sidewalks, driveways or any other similar appurtenances. Any and all such
applications meeting the above criteria will be subject to service under Rate Schedule IS-R and will be
separately and individually metered. All service hereunder is interruptible at the sole discretion of the
Company.
FACILITY REIMBURSEMENT CHARGE:
All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter set
and other related facility and equipment costs, prior to the installation of the meter set. Any request to alter
the physical location of the meter set and related facilities from Company’s initial design may be granted
provided, however, the Company can reasonably accommodate said relocation and Customer agrees to
pay all related costs.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $5.50 per bill
Per Therm Charge: $0.73618*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01733
2) Weighted average cost of gas $0.39216
3) Gas transportation cost $0.16364
Distribution Cost: $0.16305
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538
Jan Noriyuki Secretary
)HEUXDU\
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 6 of 8
I.P.U.C. Gas Tariff
Rate Schedules
Twentieth Revised7ZHQW\)LUVW Sheet No. 5 (Page 1 of 2)
Name
of Utilit Intermountain Gas Company
Issued by: Intermountain Gas Company
Title: Director – Regulatory Affairs By: Lori A. Blattner
Effective: October 1, 2022
Rate Schedule IS-C
SMALL COMMERICAL INTERRUPTIBLE SNOWMELT SERVICE
APPLICABILITY:
Applicable to any customer otherwise eligible to receive gas service under Rate Schedule GS-1 who has
added natural gas snowmelt equipment after 6/1/2010. The intended use of the snowmelt equipment is to
melt snow and/or ice on sidewalks, driveways or any other similar appurtenances. Any and all such
applications meeting the above criteria will be subject to service under Rate Schedule IS-C and will be
separately and individually metered. All service hereunder is interruptible at the sole discretion of the
Company.
FACILITY REIMBURSEMENT CHARGE:
All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter set
and other related facility and equipment costs, prior to the installation of the meter set. Any request to alter
the physical location of the meter set and related facilities from Company’s initial design may be granted
provided, however, the Company can reasonably accommodate said relocation and Customer agrees to pay
all related costs.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $9.50 per bill
Per Therm Charge: Block One: First 200 therms per bill @ $0.75116*
Block Two: Next 1,800 therms per bill @ $0.72768*
Block Three: Next 8,000 therms per bill @ $0.70501*
Block Four: Over 10,000 therms per bill @ $0.63645*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445
2) Weighted average cost of gas $0.39216
3) Gas transportation cost $0.15990
Distribution Charge: Block One: First 200 therms per bill @ $0.18465
Block Two: Next 1,800 therms per bill @ $0.16117
Block Three: Next 8,000 therms per bill @ $0.13850
Block Four: Over 10,000 therms per bill @ $0.06994
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538
Jan Noriyuki Secretary
)HEUXDU\
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 7 of 8
I.P.U.C. Gas Tariff
Rate Schedules
Seventy-Second Revised Sheet No. 7 (Page 1 of 2)
Name
of Utilit Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: October 1, 2022
Rate Schedule LV-1
LARGE VOLUME FIRM SALES SERVICE
AVAILABILITY:
Available at any mutually agreeable delivery point on the Company's distribution system to any existing
customer receiving service under the Company’s rate schedule LV-1 or any customer not previously served
under this schedule whose usage does not exceed 500,000 therms annually, upon execution of a one-year
minimum written service contract for firm sales service in excess of 200,000 therms per year.
MONTHLY RATE:
Demand Charge: $0.30000 per MDFQ therm
Per Therm Charge: Block One: First 250,000 therms per bill @ $0.54173*
Block Two: Next 500,000 therms per bill @ $0.52384*
Block Three: Over 750,000 therms per bill @ $0.44733*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment
Block One and Two $0.03247
Block Three $0.05210
2) Weighted average cost of gas $0.39216
3) Gas transportation cost (Block One and Two only) $0.08710
Distribution Cost: Block One: First 250,000 therms per bill @ $0.03000
Block Two: Next 500,000 therms per bill @ $0.01211
Block Three: Over 750,000 therms per bill @ $0.00307
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
SERVICE CONDITIONS:
1. All natural gas service hereunder is subject to the General Service Provisions of the Company's
Tariff, of which this Rate Schedule is a part.
2. The customer shall negotiate with the Company, a mutually agreeable Maximum Daily Firm Quantity
(MDFQ), which will be stated in and in effect throughout the term of the service contract.
3. The monthly Demand Charge will be equal to the MDFQ times the Demand Charge rate. Demand
Charge relief will be afforded to those LV-1 customers when circumstances impacted by force
majeure events prevent the Company from delivering natural gas to the customer’s meter.
IDAHO PUBLIC UTILITIES COMMISSION
Approved Effective
Sept. 27, 2022 Oct. 1, 2022
Per ON 35538
Jan Noriyuki Secretary
6HYHQW\7KLUG
)HEUXDU\
Exhibit No. 2 Case No. INT-G-22-08 Intermountain Gas Company Page 8 of 8
EXHIBIT NO. 3
CASE NO. INT-G-22-08
INTERMOUNTAIN GAS COMPANY
PROPOSED TARIFFS
(6 pages)
I.P.U.C. Gas Tariff
Rate Schedules
Eleventh Revised Sheet No. 1 (Page 1 of 1)
Name
of Utility Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: February 1, 2023
Rate Schedule RS
RESIDENTIAL SERVICE
APPLICABILITY:
Applicable to any customer using natural gas for residential purposes.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $5.50 per bill
Per Therm Charge: $0.86984*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment ($0.00057)
2) Weighted average cost of gas $0.52808
3) Gas transportation cost $0.16364
Distribution Cost: $0.16305
EE Charge: $0.01564
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
ENERGY EFFICIENCY CHARGE ADJUSTMENT:
This tariff is subject to an adjustment for costs related to the Company’s Energy Efficiency program as
provided for in Rate Schedule EEC-RS. The Energy Efficiency Charge is separately stated on customer bills.
SERVICE CONDITIONS:
All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff, of
which this rate schedule is a part.
Exhibit No. 3 Case No. INT-G-22-08 Intermountain Gas Company Page 1 of 6
I.P.U.C. Gas Tariff
Rate Schedules
Sixty-Sixth Revised Sheet No. 3 (Page 1 of 2)
Name
of Utility
Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: February 1, 2023
Rate Schedule GS-1
GENERAL SERVICE
APPLICABILITY:
Applicable to customers whose requirements for natural gas do not exceed 2,000 therms per day, at any point
on the Company's distribution system. Requirements in excess of 2,000 therms per day may be allowed at
the Company’s discretion.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $9.50 per bill
Per Therm Charge: Block One: First 200 therms per bill @ $0.89028*
Block Two: Next 1,800 therms per bill @ $0.86680*
Block Three: Next 8,000 therms per bill @ $0.84413*
Block Four: Over 10,000 therms per bill @ $0.77557*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445
2) Weighted average cost of gas $0.52808
3) Gas transportation cost $0.15990
Distribution Cost: Block One: First 200 therms per bill @ $0.18465
Block Two: Next 1,800 therms per bill @ $0.16117
Block Three: Next 8,000 therms per bill @ $0.13850
Block Four: Over 10,000 therms per bill @ $0.06994
EE Charge: $0.00320
Exhibit No. 3 Case No. INT-G-22-08 Intermountain Gas Company Page 2 of 6
I.P.U.C. Gas Tariff
Rate Schedules
Sixty-Sixth Revised Sheet No. 3 (Page 2 of 2)
Name
of Utility
Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: February 1, 2023
Rate Schedule GS-1
GENERAL SERVICE
(Continued)
For separately metered deliveries of gas utilized solely as Compressed Natural Gas Fuel in vehicular internal
combustion engines.
Customer Charge: $9.50 per bill
Per Therm Charge: Block One: First 10,000 therms per bill @ $0.84093*
Block Two: Over 10,000 therms per bill @ $0.77237*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445
2) Weighted average cost of gas $0.52808
3) Gas transportation cost $0.15990
Distribution Cost: Block One: First 10,000 therms per bill @ $0.13850
Block Two: Over 10,000 therms per bill @ $0.06994
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
ENERGY EFFICIENCY CHARGE ADJUSTMENT:
This tariff is subject to an adjustment for costs related to the Company’s Energy Efficiency program as
provided for in Rate Schedule EEC-GS. The Energy Efficiency Charge is not applicable to gas utilized solely
as Compressed Natural Gas Fuel in vehicular internal combustion engines. The Energy Efficiency Charge is
separately stated on customer bills.
SERVICE CONDITIONS:
1. All natural gas service hereunder is subject to the General Service Provisions of the Company's Tariff,
of which this rate schedule is a part.
Exhibit No. 3 Case No. INT-G-22-08 Intermountain Gas Company Page 3 of 6
I.P.U.C. Gas Tariff
Rate Schedules
Twenty-Second Revised Sheet No. 4 (Page 1 of 2)
Name
of Utility
Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: February 1, 2023
Rate Schedule IS-R
RESIDENTIAL INTERRUPTIBLE SNOWMELT SERVICE
APPLICABILITY:
Applicable to any residential customer otherwise eligible to receive service under Rate Schedule RS who
has added natural gas snowmelt equipment after 6/1/2010. The intended use of the snowmelt equipment is
to melt snow and/or ice on sidewalks, driveways or any other similar appurtenances. Any and all such
applications meeting the above criteria will be subject to service under Rate Schedule IS-R and will be
separately and individually metered. All service hereunder is interruptible at the sole discretion of the
Company.
FACILITY REIMBURSEMENT CHARGE:
All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter set
and other related facility and equipment costs, prior to the installation of the meter set. Any request to alter
the physical location of the meter set and related facilities from Company’s initial design may be granted
provided, however, the Company can reasonably accommodate said relocation and Customer agrees to
pay all related costs.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $5.50 per bill
Per Therm Charge: $0.87210*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01733
2) Weighted average cost of gas $0.52808
3) Gas transportation cost $0.16364
Distribution Cost: $0.16305
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
Exhibit No. 3 Case No. INT-G-22-08 Intermountain Gas Company Page 4 of 6
I.P.U.C. Gas Tariff
Rate Schedules
Twenty-First Revised Sheet No. 5 (Page 1 of 2)
Name
of Utility
Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: February 1, 2023
Rate Schedule IS-C
SMALL COMMERICAL INTERRUPTIBLE SNOWMELT SERVICE
APPLICABILITY:
Applicable to any customer otherwise eligible to receive gas service under Rate Schedule GS-1 who has
added natural gas snowmelt equipment after 6/1/2010. The intended use of the snowmelt equipment is to
melt snow and/or ice on sidewalks, driveways or any other similar appurtenances. Any and all such
applications meeting the above criteria will be subject to service under Rate Schedule IS-C and will be
separately and individually metered. All service hereunder is interruptible at the sole discretion of the
Company.
FACILITY REIMBURSEMENT CHARGE:
All new interruptible Snowmelt service customers are required to pay for the cost of the Snowmelt meter set
and other related facility and equipment costs, prior to the installation of the meter set. Any request to alter
the physical location of the meter set and related facilities from Company’s initial design may be granted
provided, however, the Company can reasonably accommodate said relocation and Customer agrees to pay
all related costs.
RATE:
Monthly minimum charge is the Customer Charge.
Customer Charge: $9.50 per bill
Per Therm Charge: Block One: First 200 therms per bill @ $0.88708*
Block Two: Next 1,800 therms per bill @ $0.86360*
Block Three: Next 8,000 therms per bill @ $0.84093*
Block Four: Over 10,000 therms per bill @ $0.77237*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment $0.01445
2) Weighted average cost of gas $0.52808
3) Gas transportation cost $0.15990
Distribution Charge: Block One: First 200 therms per bill @ $0.18465
Block Two: Next 1,800 therms per bill @ $0.16117
Block Three: Next 8,000 therms per bill @ $0.13850
Block Four: Over 10,000 therms per bill @ $0.06994
Exhibit No. 3 Case No. INT-G-22-08 Intermountain Gas Company Page 5 of 6
I.P.U.C. Gas Tariff
Rate Schedules
Seventy-Third Revised Sheet No. 7 (Page 1 of 2)
Name
of Utility
Intermountain Gas Company
Issued by: Intermountain Gas Company
By: Lori A. Blattner Title: Director – Regulatory Affairs
Effective: February 1, 2023
Rate Schedule LV-1
LARGE VOLUME FIRM SALES SERVICE
AVAILABILITY:
Available at any mutually agreeable delivery point on the Company's distribution system to any existing
customer receiving service under the Company’s rate schedule LV-1 or any customer not previously served
under this schedule whose usage does not exceed 500,000 therms annually, upon execution of a one-year
minimum written service contract for firm sales service in excess of 200,000 therms per year.
MONTHLY RATE:
Demand Charge: $0.30000 per MDFQ therm
Per Therm Charge: Block One: First 250,000 therms per bill @ $0.67765*
Block Two: Next 500,000 therms per bill @ $0.65976*
Block Three: Over 750,000 therms per bill @ $0.58325*
*Includes the following:
Cost of Gas: 1) Temporary purchased gas cost adjustment
Block One and Two $0.03247
Block Three $0.05210
2) Weighted average cost of gas $0.52808
3) Gas transportation cost (Block One and Two only) $0.08710
Distribution Cost: Block One: First 250,000 therms per bill @ $0.03000
Block Two: Next 500,000 therms per bill @ $0.01211
Block Three: Over 750,000 therms per bill @ $0.00307
PURCHASED GAS COST ADJUSTMENT:
This tariff is subject to an adjustment for the cost of purchased gas as provided for in Rate Schedule PGA.
This adjustment is incorporated into the calculation of the Cost of Gas stated on customer bills.
SERVICE CONDITIONS:
1. All natural gas service hereunder is subject to the General Service Provisions of the Company's
Tariff, of which this Rate Schedule is a part.
2. The customer shall negotiate with the Company, a mutually agreeable Maximum Daily Firm Quantity
(MDFQ), which will be stated in and in effect throughout the term of the service contract.
3. The monthly Demand Charge will be equal to the MDFQ times the Demand Charge rate. Demand
Charge relief will be afforded to those LV-1 customers when circumstances impacted by force
majeure events prevent the Company from delivering natural gas to the customer’s meter.
Exhibit No. 3 Case No. INT-G-22-08 Intermountain Gas Company Page 6 of 6
EXHIBIT NO. 4
CASE NO. INT-G-22-08
INTERMOUNTAIN GAS COMPANY
PROPOSED WEIGHTED AVERAGE COST OF GAS
(1 page)
INTERMOUNTAIN GAS COMPANY
Proposed Weighted Average Cost of Gas
Line No.Description Amount
(a) (b)
1 2022-2023 Estimated Per Therm WACOG 0.66399$
2 Currently Approved WACOG 1 0.39216
3 Difference 0.27183$
4 Proposed Increase Mitigation (0.13591)
5 Proposed WACOG Adjustment 0.13592$
6 Total Proposed WACOG 0.52808$
(1)See Case No. INT-G-22-04
Exhibit No. 4 Case No. INT-G-22-08 Intermountain Gas Company Page 1 of 1
NEWS RELEASE
and
CUSTOMER NOTICE
CASE NO. INT-G-22-08
INTERMOUNTAIN GAS COMPANY
(4 pages)
Intermountain Gas Company files price increase request as part of interim PGA
BOISE, ID – December 27, 2022 – Intermountain Gas Company today filed an interim purchased gas cost
adjustment (PGA) application with the Idaho Public Utilities Commission to increase its prices by
approximately 17.1% or $56.5 million. If approved, the increase would be effective Feb. 1, 2023.
The primary reason for the filing, Case No. INT-G-22-08, is a significant increase in the commodity price for
natural gas. Over the past several months, natural gas prices have climbed across the United States. Within
Intermountain’s service area, high demand, lower-than-average natural gas storage levels and insufficient
pipeline capacity into the region have impacted prices. Global events and an increase in liquified natural gas
exports also have created strong upward pricing pressure.
Intermountain typically files PGAs on an annual basis to balance out an over collection or under collection of
natural gas costs. Because commodity prices have increased so dramatically, the company filed an interim
increase to mitigate the under-collection balance. If left unchanged until later in the year, the monthly increase
for customers would be greater because of the under-collection balance.
Intermountain’s earnings will not increase as a result of this filing. Because the price Intermountain pays for
natural gas is passed through directly to customers, there is no financial benefit to the company from this
proposed price increase.
If approved, a typical residential customer would see an increase of $8.58, or 16.6%, per month based on
average weather and usage. Commercial customers, on average, would see an increase of $43.10, or 17.9%, per
month.
As a way to help customers better budget their energy costs, Intermountain offers a Level Pay program that
helps even out monthly payments. Customers struggling to pay their bills may also qualify for federal or state
energy assistance and should contact Intermountain to find out more or arrange a payment plan to help manage
any past due balance on their account.
“The rebounding economy, a slow ramp up of drilling activity and limited natural gas pipeline capacity are
factors in increased commodity prices,” said Scott Madison, executive vice president of business development
and gas supply for Intermountain.
Intermountain urges all customers to use energy wisely. For more information about the company’s energy
efficiency program and available rebates for installing high efficiency equipment, visit
www.intgas.com/saveenergy. Conservation tips, information on government payment energy assistance and
programs to help consumers level out their energy bills over the year can be found on the company’s website
www.intgas.com.
The request is a proposal and is subject to public review and approval by the PUC. A copy of the application is
available for review at the commission, its homepage www.puc.idaho.gov, as well as the company’s website
www.intgas.com. Written comments regarding the application may be filed with the commission. Customers
may also subscribe to the commission’s RSS feed to review periodic updates via email.
NEWS RELEASE
Intermountain Gas Company is a natural gas distribution company serving approximately 404,800 residential,
commercial and industrial customers in 74 communities in southern Idaho. Intermountain is a subsidiary of
MDU Resources Group, Inc., a member of the S&P MidCap 400 and the S&P High-Yield Dividend Aristocrats
indices, and is Building a Strong America® by providing essential products and services through its regulated
energy delivery and construction materials and services businesses. For more information about MDU
Resources, see the company’s website at www.mdu.com. For more information about Intermountain, visit
www.intgas.com.
Media Contact: Mark Hanson at 701-530-1093 or mark.hanson@mduresources.com or Laura Lueder at 701-
530-1095 or laura.lueder@mduresources.com.
Customer Notice
Intermountain Gas Company files price increase request as part of interim PGA
BOISE, ID | December 27, 2022 - Intermountain Gas Company today filed an interim purchased gas cost adjustment (PGA) application
with the Idaho Public Utilities Commission to increase its prices by approximately 17.1% or $56.5 million. If approved, the increase would
be effective Feb. 1, 2023.
The primary reason for the filing, Case No. INT-G-22-08, is a significant increase in the commodity price for natural gas. Over the past
several months, natural gas prices have climbed across the United States. Within Intermountain’s service area, lower-than-average natural
gas storage levels and insufficient pipeline capacity into the region have impacted prices. Global events and an increase in liquified
natural gas exports also have created strong upward pricing pressure.
Intermountain typically files PGAs on an annual basis to balance out an over collection or under collection of natural gas costs. Because
commodity prices have increased so dramatically, the company filed an interim increase to mitigate the under-collection balance. If left
unchanged until later in the year, the monthly increase for customers would be greater because of the under-collection balance.
Intermountain’s earnings will not increase as a result of this filing. Because the price Intermountain pays for natural gas is passed through
directly to customers, there is no financial benefit to the company from this proposed price increase.
If approved, a typical residential customer would see an increase of $8.58, or 16.6%, per month based on average weather and usage.
Commercial customers, on average, would see an increase of $43.10, or 17.9%, per month.(continued on reverse side)
As a way to help customers better budget their energy costs, Intermountain offers a Level Pay program that helps even out
monthly payments. Customers struggling to pay their bills may also qualify for federal or state energy assistance and should contact
Intermountain to find out more or arrange a payment plan to help manage any past due balance on their account.
Intermountain urges all customers to use energy wisely. For more information about the company’s energy efficiency program
and available rebates for installing high efficiency equipment, visit www.intgas.com/saveenergy. Conservation tips, information on
government payment energy assistance and programs to help consumers level out their energy bills over the year can be found on the
company’s website www.intgas.com.
In December, a separate notice detailing a price increase request, Case No. INT-G-22-07, accompanied customer bills. The notice failed to include the information below, noting it is a request and is subject to approval as well as where the application could be reviewed and comments filed.
This request as well as the December request are proposals and are subject to public review and approval by the PUC. A copy of the
applications are available for review at the commission, its homepage www.puc.idaho.gov, as well as the company’s website www.intgas.com.
Written comments regarding the applications may be filed with the commission. Customers may also subscribe to the
commission’s RSS feed to review periodic updates via email.
Intermountain Gas Company | Customer Service: 800-548-3679 | M-F, 7:30am - 6:30pm | www.intgas.com