20251001Final Approved Tariffs - Gas.pdf

IDAHO PUBLIC UTILITIES COMMISSION
Eighteenth Revision Sheet 101 Approved Effective
Canceling October 1,2025 September 1,2025
I.P.U.C. No.27 Seventeenth Revision Sheet 101 Per ON 36776
Commission Secretary
AVISTA CORPORATION
d/b/a Avista Utilities
SCHEDULE 101
GENERAL SERVICE - FIRM - IDAHO
AVAILABLE:
To Customers in the State of Idaho where Company has natural gas service
available.
APPLICABLE:
To firm gas service for any purpose when all such service used on the
premises is supplied at one point of delivery through a single meter.
MONTHLY RATE: Per Meter
Per Month
Basic charge $20.00
Charge Per Therm:
Base Rate 31.8400
Minimum Charge: $20.00
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 158, Purchase Gas Cost Adjustment Schedule 150, Gas
Rate Adjustment Schedule 155, Fixed Cost Adjustment Schedule 175, Tax
Customer Credit Schedule 176 and Energy Efficiency Rider Adjustment Schedule
191.
SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
Issued August 29, 2025 Effective September 1, 2025
Issued by Avista Utilities
By Patrick Ehrbar ,Director of Regulatory Affairs

IDAHO PUBLIC UTILITIES COMMISSION
Nineteenth Revision Sheet 111 Approved Effective
Canceling October 1,2025 September 1,2025
I.P.U.C. No.27 Eighteenth Revision Sheet 111 Per ON 36776
Commission Secretary
AVISTA CORPORATION
d/b/a Avista Utilities
SCHEDULE 111
LARGE GENERAL SERVICE - FIRM - IDAHO
AVAILABLE:
To Customers in the State of Idaho where Company has natural gas service
available.
APPLICABLE:
To firm gas service for any purpose, subject to execution of a service
agreement for a term of one year or longer. All such service used on the premises
shall be supplied at one point of delivery through a single meter.
MONTHLY RATE:
Charge Per Therm:
Per Meter
Base Rate Per Month
First 200 $0.41840
Next 800 $0.31340
Next 9,000 $0.23982
All Over $0.17976
Minimum Charge: $83.68 The minimum charge calculation is based solely
on the base rate per therm noted above and is not inclusive of the adder schedules.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 158, Purchase Gas Cost Adjustment Schedule 150, Gas
Rate Adjustment Schedule 155, Fixed Cost Adjustment Schedule 175, Tax
Customer Credit Schedule 176 and Energy Efficiency Rider Adjustment Schedule
191.
Issued August 29, 2025 Effective September 1, 2025
Issued by Avista Utilities
( J By Patrick Ehrbar Director of Regulatory Affairs

IDAHO PUBLIC UTILITIES COMMISSION
Twentieth Revision Sheet 112 Approved Effective
Canceling October 1,2025 September 1,2025
I.P.U.C. No.27 Nineteenth Revision Sheet 112 Per ON 36776
Commission Secretary
AVISTA CORPORATION
d/b/a Avista Utilities
SCHEDULE 112
LARGE GENERAL SERVICE - FIRM - IDAHO
AVAILABLE:
To Customers in the State of Idaho where Company has natural gas service
available. Customers taking service under this Schedule beginning on or after
March 1, 2002 must have been previously served under Schedule 146 —
Transportation Service for Customer—Owned Gas.
APPLICABLE:
To firm gas service for any purpose, subject to execution of a service
agreement for a term of one year or longer. All such service used on the premises
shall be supplied at one point of delivery through a single meter.
MONTHLY RATE:
Charge Per Therm:
Per Meter
Base Rate Per Month
First 200 $0.41840
Next 800 $0.31340
Next 9,000 $0.23982
All Over $0.17976
Minimum Charge: $83.68 The minimum charge calculation is based solely
on the base rate per therm noted above and is not inclusive of the adder schedules.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 158, Purchase Gas Cost Adjustment Schedule 150, Gas
Rate Adjustment Schedule 155, Fixed Cost Adjustment Schedule 175, Tax
Customer Credit Schedule 176 and Energy Efficiency Rider Adjustment Schedule
191.
Issued August 29, 2025 Effective September 1, 2025
Issued by Avista Utilities
By Patrick Ehrbar Director of Regulatory Affairs
QCA

IDAHO PUBLIC UTILITIES COMMISSION
Sixteenth Revision Sheet 146 Approved Effective
Canceling October 1,2025 September 1,2025
I.P.U.C. No.27 Fifteenth Revision Sheet 146 Per ON 36776
Commission Secretary
AVISTA CORPORATION
d/b/a Avista Utilities
SCHEDULE 146
TRANSPORTATION SERVICE FOR CUSTOMER-OWNED GAS - IDAHO
AVAILABLE:
To Commercial and Industrial Customers in the State of Idaho whose
requirements exceed 250,000 therms of gas per year provided that the Company's
existing distribution system has capacity adequate for the service requested by
Customer.
APPLICABLE:
To transportation service for a Customer-owned supply of natural gas from the
Company's point of interconnection with its Pipeline Transporter to the Company's
point of interconnection with the Customer. Service shall be supplied at one point of
delivery and metering for use by a single customer.
MONTHLY RATE:
$400.00 Customer Charge, plus
Charge Per Therm:
Base Rate 12.0710
ANNUAL MINIMUM:
$34,978 unless a higher minimum is required under contract to cover special
conditions.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 158, Gas Rate Adjustment Schedule 155, Tax Customer Credit
Schedule 176 and Energy Efficiency Rider Adjustment Schedule 191.
Issued August 29, 2025 Effective September 1, 2025
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs