20230201Miller Exhibit 18 Schedules 1-6.pdf

DAVID J. MEYER
VICE PRESIDENT AND CHIEF COUNSEL FOR
REGULATORY & GOVERNMENTAL AFFAIRS
AVISTA CORPORATION
P.O. BOX 3727
1411 EAST MISSION AVENUE
SPOKANE, WASHINGTON 99220-3727
TELEPHONE: [phone]
FACSIMILE: [phone]
[e-mail]

BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION

IN THE MATTER OF THE APPLICATION ) CASE NO. AVU-E-23-01
OF AVISTA CORPORATION FOR THE ) CASE NO. AVU-G-23-01
AUTHORITY TO INCREASE ITS RATES )
AND CHARGES FOR ELECTRIC AND ) EXHIBIT NO. 18
NATURAL GAS SERVICE TO ELECTRIC ) OF
AND NATURAL GAS CUSTOMERS IN THE ) JOSEPH D. MILLER
STATE OF IDAHO )
)

FOR AVISTA CORPORATION

(ELECTRIC AND NATURAL GAS)

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 1 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 2 of 64

SCHEDULE 1
RESIDENTIAL SERVICE - IDAHO
(Single phase & available voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service for domestic purposes in each individual residence, apartment, mobile
home, or other living unit when all such service used on the premises is supplied through
a single meter.
Where a portion of a dwelling is used regularly for the conduct of business or
where a portion of the electricity supplied is used for other than domestic purposes, the
appropriate general service schedule is applicable. However, if the service for all
domestic purposes is metered separately, this schedule will be applied to such service.
When two or more living units are served through a single meter, the appropriate general
service schedule is applicable.

MONTHLY RATE:
$15.00 Basic Charge, plus
First 600 kWh 9.770¢ per kWh
All over 600 kWh 10.979¢ per kWh

Monthly Minimum Charge: $15.00

OPTIONAL SEASONAL MONTHLY CHARGE:
A $15.00 monthly charge shall apply to Customers who close their account on a
seasonal or intermittent basis, provided no energy usage occurs during an entire monthly
billing cycle while the account is closed. Customers choosing this option are required to
notify the Company in writing or by phone in advance and the account will be closed at
the start of the next billing cycle following notification. If energy is used during a monthly
billing cycle, the above listed energy charges and basic charge of $15.00 shall apply.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.

The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Residential and Farm Energy Rate Adjustment Schedule 59,
Temporary Power Cost Adjustment Schedule 66, Fixed Cost Adjustment Mechanism
Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment
Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 3 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 4 of 64
SCHEDULE 11

GENERAL SERVICE - IDAHO

(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service
available.

APPLICABLE:
To general service supplied for all power requirements when all such service
taken on the premises is supplied through one meter installation.

MONTHLY RATE:
The sum of the following charges:

$18.00 Basic Charge, plus
Energy Charge:
First 3650 kWh 10.519¢ per kWh
All Over 3650 kWh 7.371¢ per kWh

Demand Charge:
No charge for the first 20 kW of demand.
$6.50 per kW for each additional kW of demand.

Minimum:
$18.00 for single phase service and $25.10 for three phase service;
unless a higher minimum is required under contract to cover special
conditions.

DEMAND:
The average kW supplied during the 15-minute period of maximum use
during the month as determined by a demand meter.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.

The above Monthly Rates are subject to increases or decreases as set forth
in Tax Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66,
Fixed Cost Adjustment Mechanism Schedule 75, Tax Customer Credit Schedule 76
and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 5 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 6 of 64
SCHEDULE 21
LARGE GENERAL SERVICE - IDAHO
(Available phase and voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.
APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation. Customer shall provide and
maintain all transformers and other necessary equipment on his side of the point of
delivery and may be required to enter into a written contract for five (5) years or longer.

MONTHLY RATE:
The sum of the following demand and energy charges:
Energy Charge:
First 250,000 kWh 7.398¢ per kWh
All Over 250,000 kWh 6.235¢ per kWh
Demand Charge:
$500.00 for the first 50 kW of demand or less.
$6.50 per kW for each additional kW of demand.
Primary Voltage Discount:
If Customer takes service at 11 kv (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kW of demand per month.
Power Factor Adjustment Charge:
If Customer has a reactive kilovolt-ampere (kVAr) meter, he will be subject to
a Power Factor Adjustment charge, as set forth in the Rules & Regulations.
Minimum:
$500.00, unless a higher minimum is required under contract to cover special
conditions.
ANNUAL MINIMUM:
The current 12-month billing including any charges for power factor correction shall
be not less than $10.00 per kW of the highest demand established during the current 12-
month period provided that such highest demand shall be adjusted by the elimination of
any demand occasioned by an operation totally abandoned during such 12-month period.
DEMAND:
The average kW supplied during the 15-minute period of maximum use during the
month as determined by a demand meter.
SPECIAL TERMS AND CONDITIONS:
Customers served at 11 kv or higher shall provide and maintain all transformers and
other necessary equipment on their side of the point of delivery.
Service under this schedule is subject to the Rules and Regulations contained in this
tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 7 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 8 of 64

SCHEDULE 25

EXTRA LARGE GENERAL SERVICE - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation for a demand of not less than
2,500 kVA but not greater than 25,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. If the Customer has less than twelve months of billing history, the Customer
must have a minimum of six consecutive billing months of demand of at least 2,500 kVA in
order to receive service under this schedule. New Customers must meet the above
criteria or otherwise provide the Company with reasonable assurance that their peak
demand will average at least 2,500 kVA. Customer shall provide and maintain all
transformers and other necessary equipment on his side of the point of delivery and enter
into a written contract for five (5) years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
First 500,000 kWh 6.447¢ per kWh
All Over 500,000 kWh 5.401¢ per kWh
Demand Charge:
$16,000.00 for the first 3,000 kVA of demand or less.
$5.75 per kVA for each additional kVA of demand.
Primary Voltage Discount:
If Customer takes service at 11 kV (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kVA of demand per month.
Minimum:
The demand charge unless a higher minimum is required under contract
to cover special conditions.

ANNUAL MINIMUM: $848,870
Any annual minimum deficiency will be determined during the April billing cycle for
the previous 12-month period. For a customer who has taken service on this schedule for
less than 12 months, the annual minimum will be prorated based on the actual months of
service. The annual minimum will also be prorated if base rates change during the 12-month
period. The annual minimum is based on 916,667 kWh’s per month (11,000,000 kWh’s
annually), plus twelve months multiplied by the monthly minimum demand charge for the
first 3,000 kVa of demand. The annual minimum reflected above is based on base

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 9 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 10 of 64
SCHEDULE 25P

EXTRA LARGE GENERAL SERVICE TO CLEARWATER PAPER’S FACILITY - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Clearwater Paper Corporation’s Lewiston, Idaho Facility.

APPLICABLE:
To general service supplied for all power requirements with a demand of not less than
2,500 kVA but not greater than 110,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. Customer shall provide and maintain all transformers and other necessary
equipment on its side of the point of delivery and enter into a written contract for five (5)
years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
Block 1 Retail Meter 4.830¢ per kWh
Block 2 Generation Meter 2.456¢ per kWh

Demand Charge as measured at the Retail Meter:
$16,000.00 for the first 3,000 kVA of demand or less.
1st Demand Block: $5.75 per kVA for each additional kVA of demand up to
55,000 kVA.
2nd Demand Block: $3.00 per kVA for each additional kVA of demand above
55,000 kVA.

Primary Voltage Discount as measured at the Retail Meter:
If Customer takes service at 11 kV (wye grounded) or higher, it will be allowed
a primary voltage discount of 20¢ per kVA of demand per month.

Minimum:
The demand charge unless a higher minimum is required under contract to
cover special conditions.

ANNUAL MINIMUM: $723,300
Any annual minimum deficiency will be determined during the April billing cycle for the
previous 12-month period. The annual minimum is based on 916,667 kWh’s per month priced
at the Block 1 per kWh rate, plus twelve months multiplied by the monthly minimum demand
charge for the first 3,000 kVa of demand. The annual minimum reflected above is based on
base revenues only. Any other revenues paid in billed rates (such as the DSM Tariff Rider
Schedule 91) do not factor into the annual minimum calculation.
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 11 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 12 of 64
SCHEDULE 31
PUMPING SERVICE - IDAHO
(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service through one meter for pumping water or water effluents, including
incidental power used for other equipment and lighting essential to the pumping operation.
For such incidental service, Customer will furnish any transformers and other necessary
equipment. Customer may be required to enter into a written contract for five (5) years or
longer and will have service available on a continuous basis unless there is a change in
ownership or control of property served.

MONTHLY RATE:
The sum of the following charges:
$16.00 Basic Charge, plus
Energy Charge:
11.766¢ per kWh for the first 85 KWh per kW of demand, and for the next 80
KWh per kW of demand but not more than 3,000 KWh.
9.936¢ per KWh for all additional KWh.

Annual Minimum:
$12.00 per kW of the highest demand established in the current year ending
with the November billing cycle. If no demand occurred in the current year, the
annual minimum will be based on the highest demand in the latest previous
year having a demand.

Demand:
The average kW supplied during the 15-minute period of maximum use during
the month determined, at the option of Company, by a demand meter or
nameplate input rating of pump motor.

SPECIAL TERMS AND CONDITIONS:
If Customer requests the account to be closed by reason of change in ownership or
control of property, the unbilled service and any applicable annual minimum will be
prorated to the date of closing.
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 13 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 14 of 64

SCHEDULE 41

COMPANY OWNED STREET LIGHT SERVICE-IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981,
except where Company and customer agree, mercury vapor lamps may be
installed to provide compatibility with existing light sources.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application.

MONTHLY RATE:

Pole Facility
Fixture Metal Standard
& Size Wood Pedestal Direct Developer
(Lumens) No Pole Pole Base Burial Contributed
Code Rate Code Rate Code Rate Code Rate Code Rate

Single Mercury Vapor

7000 411 $ 18.89 416 $ 18.89

*Not available to new customers accounts, or locations.
#Decorative Curb.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 15 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 16 of 64
SCHEDULE 42

COMPANY OWNED STREET LIGHT SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application. Closed to new
installations of sodium vapor lamps as of January 1, 2018, except where
Company and customer agree, sodium vapor lamps may be installed to provide
compatibility with existing light sources.

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
50W 235 $13.31 234# $16.62
100W 434# $17.46
100W 431/435 $16.20 432 $30.59 433 $30.59 436 $16.96
200W 531/535 $26.84 532 $41.19 533 $41.19 536 $27.65
250W 631/635 $31.51 632 $45.87 633 $45.87 636 $32.32
400W 831/835 $47.29 832 $61.67

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 446 $34.06
200W 545 $53.69 542 $69.77 546 $54.48
#Decorative Curb

Decorative Sodium Vapor
100W Granville 474* $31.59
100W Post Top 484* $30.32
100W Kim Light 438** $17.47

*16' fiberglass pole
**25' fiberglass pole
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 17 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 18 of 64
SCHEDULE 42A - Continued

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed Code Rate Code Rate Code Rate Code Rate

Single Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 935L $13.93 434L# $17.46 70W 431/435L $16.20 432L $30.59 433L $30.59 436L $16.96
107W 531/535L $26.84 532L $41.19 533L $41.19 536L $27.65
248W 831/835L $47.29 832L $61.67 833L $61.67 836L $48.08

Double Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 441L $34.06 442L $48.54 446L $34.06
107W 545L $53.69 542L $69.77 546L $54.48
#Decorative Curb
Decorative LED
70W Granville 475L $24.30 474L* $31.59
70W Post Top 484L* $30.32
70W (30ft Fiberglass Pole) 494L $29.58
70W (35’ Fiberglass Pole) 594L $32.60

*16' fiberglass pole

Custom Street Light Calculation
Customers who choose to add street light fixtures that are outside of the offerings listed above will
be quoted a fixed monthly rate based on the following rate calculation. The three components
detailed below will be added together to develop the new Schedule 42 rate.

Step 1 – The capital component will be determined by multiplying an engineering estimate of the
installed cost of the new light component, or fixture, by the Capital Recovery Factor of 11.468%.

Step 2 – The maintenance component will either be the embedded maintenance cost of a similar
existing fixture or an engineering estimate of the maintenance cost of a new fixture. The
maintenance component for an existing light can be derived by subtracting the Schedule 46
(energy) light code monthly charge from the same Schedule 44 light code monthly charge
(maintenance and energy).

Step 3 – The energy component will be the energy cost of the same wattage light under Schedule
46.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 19 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 20 of 64

SCHEDULE 44
CUSTOMER OWNED STREET LIGHT ENERGY AND MAINTENANCE SERVICE -
IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory served by
Company. Closed to new installations effective January 1, 2016.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and thoroughfares
upon receipt of an authorized application.

MONTHLY RATE: Pole Facility Metal Standard
Fixture & Size
(Lumens) No Pole Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate
Single High-Pressure
Sodium Vapor

100W 435 $12.36 432 $12.36 200W 535 $18.64 532 $18.64 250W 635 $20.95 632 $20.95 633 $20.95
400W 835 $33.39 832 $33.40
150W 936 $16.22

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing and owning standards, luminaries
and necessary circuitry and related facilities to connect with Company designated points of
delivery. All such facilities will conform to Company's design, standards and
specifications. Customer is also responsible for painting (if desired) and replacing
damaged pole facilities.
Company will furnish the necessary energy, repairs and maintenance work
including lamp and glassware cleaning and replacement. Repairs and maintenance work
will be performed by Company during regularly scheduled working hours.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 21 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 22 of 64

SCHEDULE 45

CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981, except
where Company and customer agree, mercury vapor lamps may be installed to
provide compatibility with existing light sources.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:
Per Luminaire
Dusk to
Fixture Dawn
& Size Service
(Lumens) Code Rate

Mercury Vapor
10000 515 $ 9.09
20000# 615 16.50
#Also includes Metal Halide.

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will
be provided.

Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule
91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 23 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 24 of 64

SCHEDULE 46
CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:

Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 435 $ 5.63
200W 535 10.52
250W 635 12.94
310W 735 15.38
400W 835 19.63
150W 935 8.12

LED
01 – 10W 005L $ 0.25
11 – 20W 015L 0.62
21 – 30W 025L 1.11
31 – 40W 035L 1.61
41 – 50W 045L 1.99
51 – 60W 055L 2.48
61 – 70W 065L 2.85
71 – 80W 075L 3.34
81 – 90W 085L 3.84
91 – 100W 095L 4.21
101 – 110W 105L 4.71

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 25 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 26 of 64

SCHEDULE 46A - Continued

MONTHLY RATE:
Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

111 - 120W 115L $ 5.08
121 - 130W 125L 5.58
131 - 140W 135L 6.07
141 - 150W 145L 6.44
151 - 160W 155L 6.93
161 - 170W 165L 7.30
171 - 180W 175L 7.80
181 - 190W 185L 8.30
191 - 200W 195L 8.68
201 - 225W 212L 9.54
226 - 250W 237L 10.66

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will be
provided.
Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 27 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 28 of 64

SCHEDULE 47

AREA LIGHTING - MERCURY VAPOR - IDAHO
(Single phase and available voltage)

AVAILABLE:
In all Idaho territory served by Company where existing secondary
distribution facilities are of adequate capacity, phase, and voltage.

APPLICABLE:
To annual operation of dusk-to-dawn area lighting with mercury vapor lamps
upon receipt of a Customer contract for five (5) years or more. Mercury vapor
lamps will be available only to those customers receiving service on October 23,
1981.

MONTHLY RATE:
Charge per Unit
Nominal Lumens)
7,000 10,000 20,000

Luminaire (on existing standard) $ 18.89 $ 22.88 $ 32.49

Luminaire and Standard:

30-foot wood pole 23.64 27.65 37.26

Galvanized steel standards:
25 foot 44.70

Monthly Rate
per Pole
Pole Facility
30-foot wood pole $ 7.78
55-foot wood pole 15.07
20-foot fiberglass-direct burial 7.78

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 29 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 30 of 64
SCHEDULE 49

AREA LIGHTING - IDAHO
(Single phase and available voltage)
AVAILABLE:
In all territory served by the Company where existing secondary distribution facilities
are of adequate capacity, phase, and voltage.
APPLICABLE:
To annual operation of dusk-to-dawn area lighting with high-pressure sodium vapor
lamps upon receipt of a Customer contract for five (5) years or more.
MONTHLY RATE:

HIGH PRESSURE SODIUM VAPOR Charge per Unit
(Nominal Rating in Watts)
Luminaire 100W 200W 250W 400W
Cobrahead $15.07 $19.94 $23.04 $29.57
Decorative Curb $15.07

100W Post Top w/16-foot decorative pole $36.38
100W Kim Light w/25-foot fiberglass pole $22.86
400W Flood (No pole) $36.13

LIGHT EMITTING DIODE (LED) Charge per Unit
(Nominal Rating in Watts)
Luminaire 70W 107W 125W 248W
Cobrahead $15.07 $19.94 $29.57
Decorative Curb $15.07

70W Granville w/16-foot decorative pole $40.06
70W Post Top w/16-foot decorative pole $36.38
70W 30ft fiberglass direct buried $29.58
107W 35ft fiberglass direct buried $34.40
125W Flood (No Pole) $18.35
125W Flood (40ft Pole) $31.14
248W Flood (No Pole) $36.13

Pole Facility Monthly Rate per Pole
30-foot wood pole $7.78
40-foot wood pole $12.78
55-foot wood pole $15.03
20-foot fiberglass $7.78
25-foot galvanized steel standard $12.14
30-foot galvanized steel standard* $13.43
25-foot galvanized aluminum standard* $14.83
30-foot fiberglass-pedestal base $37.15
30-foot steel-pedestal base $34.29
35 foot steel direct buried $34.29
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 31 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 32 of 64
SCHEDULE 49A – Continued

Custom Area Light Calculation
Customers who choose to add area light fixtures that are outside of the offerings listed
above will be quoted a fixed monthly rate based on the following rate calculation. The
three components detailed below will be added together to develop the new Schedule 49
rate.

Step 1 – The capital component will be determined by multiplying an engineering
estimate of the installed cost of the new area light component, or fixture, by the Capital
Recovery Factor of 11.468%.

Step 2 – The maintenance component will be an engineering estimate of the
maintenance cost of a new fixture.

Step 3 – The energy component will be the energy cost of the same wattage light under
Schedule 46.

SPECIAL TERMS AND CONDITIONS:
The Company will install, own, and maintain the facilities for supplying dusk-to-
dawn area lighting service using overhead circuits. At the request of Customer, Company
will install underground cable for such service provided Customer, in advance of
construction, pays Company the excess cost of such installation.

The Company will furnish the necessary energy, repairs, and maintenance work
including lamp and glassware replacement. Repairs and maintenance work will be
performed by Company during regularly scheduled working hours. Individual lamps will
be replaced on burnout as soon as reasonably possible after notification by Customer
and subject to Company's operating schedules and requirements.

The Company will assess the Customer the following removal charges if the
Customer requests to discontinue service under this schedule within the initial five-year
contract period:
$25 per luminaire $75 per pole

Service under this schedule is subject to the Rules and Regulations contained in
this tariff.

The above Monthly Rates are subject to increases as set forth in Tax Adjustment
Schedule 58, Temporary Power Cost Adjustment Schedule 66, Energy Efficiency Rider
Tax Customer Credit Schedule 76 and Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 33 of 64
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 34 of 64

SCHEDULE 1
RESIDENTIAL SERVICE - IDAHO
(Single phase & available voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service for domestic purposes in each individual residence, apartment, mobile
home, or other living unit when all such service used on the premises is supplied through
a single meter.
Where a portion of a dwelling is used regularly for the conduct of business or
where a portion of the electricity supplied is used for other than domestic purposes, the
appropriate general service schedule is applicable. However, if the service for all
domestic purposes is metered separately, this schedule will be applied to such service.
When two or more living units are served through a single meter, the appropriate general
service schedule is applicable.

MONTHLY RATE:
$15.00 Basic Charge, plus
First 600 kWh 9.770¢ per kWh
All over 600 kWh 10.979¢ per kWh

Monthly Minimum Charge: $15.00

OPTIONAL SEASONAL MONTHLY CHARGE:
A $15.00 monthly charge shall apply to Customers who close their account on a
seasonal or intermittent basis, provided no energy usage occurs during an entire monthly
billing cycle while the account is closed. Customers choosing this option are required to
notify the Company in writing or by phone in advance and the account will be closed at
the start of the next billing cycle following notification. If energy is used during a monthly
billing cycle, the above listed energy charges and basic charge of $15.00 shall apply.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.

The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Residential and Farm Energy Rate Adjustment Schedule 59,
Temporary Power Cost Adjustment Schedule 66, Fixed Cost Adjustment Mechanism
Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment
Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 35 of 64

SCHEDULE 1
RESIDENTIAL SERVICE - IDAHO
(Single phase & available voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service for domestic purposes in each individual residence, apartment, mobile
home, or other living unit when all such service used on the premises is supplied through
a single meter.
Where a portion of a dwelling is used regularly for the conduct of business or
where a portion of the electricity supplied is used for other than domestic purposes, the
appropriate general service schedule is applicable. However, if the service for all
domestic purposes is metered separately, this schedule will be applied to such service.
When two or more living units are served through a single meter, the appropriate general
service schedule is applicable.

MONTHLY RATE:
$20.00 Basic Charge, plus
First 600 kWh 9.734¢ per kWh
All over 600 kWh 10.939¢ per kWh

Monthly Minimum Charge: $20.00

OPTIONAL SEASONAL MONTHLY CHARGE:
A $20.00 monthly charge shall apply to Customers who close their account on a
seasonal or intermittent basis, provided no energy usage occurs during an entire monthly
billing cycle while the account is closed. Customers choosing this option are required to
notify the Company in writing or by phone in advance and the account will be closed at
the start of the next billing cycle following notification. If energy is used during a monthly
billing cycle, the above listed energy charges and basic charge of $20.00 shall apply.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.

The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Residential and Farm Energy Rate Adjustment Schedule 59,
Temporary Power Cost Adjustment Schedule 66, Fixed Cost Adjustment Mechanism
Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment
Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 36 of 64
SCHEDULE 11

GENERAL SERVICE - IDAHO

(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service
available.

APPLICABLE:
To general service supplied for all power requirements when all such service
taken on the premises is supplied through one meter installation.

MONTHLY RATE:
The sum of the following charges:

$18.00 Basic Charge, plus
Energy Charge:
First 3650 kWh 10.519¢ per kWh
All Over 3650 kWh 7.371¢ per kWh

Demand Charge:
No charge for the first 20 kW of demand.
$6.50 per kW for each additional kW of demand.

Minimum:
$18.00 for single phase service and $25.10 for three phase service;
unless a higher minimum is required under contract to cover special
conditions.

DEMAND:
The average kW supplied during the 15-minute period of maximum use
during the month as determined by a demand meter.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.

The above Monthly Rates are subject to increases or decreases as set forth
in Tax Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66,
Fixed Cost Adjustment Mechanism Schedule 75, Tax Customer Credit Schedule 76
and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 37 of 64
SCHEDULE 11

GENERAL SERVICE - IDAHO

(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service
available.

APPLICABLE:
To general service supplied for all power requirements when all such service
taken on the premises is supplied through one meter installation.

MONTHLY RATE:
The sum of the following charges:

$20.00 Basic Charge, plus
Energy Charge:
First 3650 kWh 10.853¢ per kWh
All Over 3650 kWh 7.604¢ per kWh

Demand Charge:
No charge for the first 20 kW of demand.
$7.00 per kW for each additional kW of demand.

Minimum:
$20.00 for single phase service and $27.10 for three phase service;
unless a higher minimum is required under contract to cover special
conditions.

DEMAND:
The average kW supplied during the 15-minute period of maximum use
during the month as determined by a demand meter.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.

The above Monthly Rates are subject to increases or decreases as set forth
in Tax Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66,
Fixed Cost Adjustment Mechanism Schedule 75, Tax Customer Credit Schedule 76
and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 38 of 64
SCHEDULE 21
LARGE GENERAL SERVICE - IDAHO
(Available phase and voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.
APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation. Customer shall provide and
maintain all transformers and other necessary equipment on his side of the point of
delivery and may be required to enter into a written contract for five (5) years or longer.

MONTHLY RATE:
The sum of the following demand and energy charges:
Energy Charge:
First 250,000 kWh 7.398¢ per kWh
All Over 250,000 kWh 6.235¢ per kWh
Demand Charge:
$500.00 for the first 50 kW of demand or less.
$6.50 per kW for each additional kW of demand.
Primary Voltage Discount:
If Customer takes service at 11 kv (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kW of demand per month.
Power Factor Adjustment Charge:
If Customer has a reactive kilovolt-ampere (kVAr) meter, he will be subject to
a Power Factor Adjustment charge, as set forth in the Rules & Regulations.
Minimum:
$500.00, unless a higher minimum is required under contract to cover special
conditions.
ANNUAL MINIMUM:
The current 12-month billing including any charges for power factor correction shall
be not less than $10.00 per kW of the highest demand established during the current 12-
month period provided that such highest demand shall be adjusted by the elimination of
any demand occasioned by an operation totally abandoned during such 12-month period.
DEMAND:
The average kW supplied during the 15-minute period of maximum use during the
month as determined by a demand meter.
SPECIAL TERMS AND CONDITIONS:
Customers served at 11 kv or higher shall provide and maintain all transformers and
other necessary equipment on their side of the point of delivery.
Service under this schedule is subject to the Rules and Regulations contained in this
tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 39 of 64
SCHEDULE 21
LARGE GENERAL SERVICE - IDAHO
(Available phase and voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.
APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation. Customer shall provide and
maintain all transformers and other necessary equipment on his side of the point of
delivery and may be required to enter into a written contract for five (5) years or longer.

MONTHLY RATE:
The sum of the following demand and energy charges:
Energy Charge:
First 250,000 kWh 7.657¢ per kWh
All Over 250,000 kWh 6.455¢ per kWh
Demand Charge:
$525.00 for the first 50 kW of demand or less.
$7.00 per kW for each additional kW of demand.
Primary Voltage Discount:
If Customer takes service at 11 kv (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kW of demand per month.
Power Factor Adjustment Charge:
If Customer has a reactive kilovolt-ampere (kVAr) meter, he will be subject to
a Power Factor Adjustment charge, as set forth in the Rules & Regulations.
Minimum:
$525.00, unless a higher minimum is required under contract to cover special
conditions.
ANNUAL MINIMUM:
The current 12-month billing including any charges for power factor correction shall
be not less than $10.00 per kW of the highest demand established during the current 12-
month period provided that such highest demand shall be adjusted by the elimination of
any demand occasioned by an operation totally abandoned during such 12-month period.
DEMAND:
The average kW supplied during the 15-minute period of maximum use during the
month as determined by a demand meter.
SPECIAL TERMS AND CONDITIONS:
Customers served at 11 kv or higher shall provide and maintain all transformers and
other necessary equipment on their side of the point of delivery.
Service under this schedule is subject to the Rules and Regulations contained in this
tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 40 of 64

SCHEDULE 25

EXTRA LARGE GENERAL SERVICE - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation for a demand of not less than
2,500 kVA but not greater than 25,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. If the Customer has less than twelve months of billing history, the Customer
must have a minimum of six consecutive billing months of demand of at least 2,500 kVA in
order to receive service under this schedule. New Customers must meet the above
criteria or otherwise provide the Company with reasonable assurance that their peak
demand will average at least 2,500 kVA. Customer shall provide and maintain all
transformers and other necessary equipment on his side of the point of delivery and enter
into a written contract for five (5) years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
First 500,000 kWh 6.447¢ per kWh
All Over 500,000 kWh 5.401¢ per kWh
Demand Charge:
$16,000.00 for the first 3,000 kVA of demand or less.
$5.75 per kVA for each additional kVA of demand.
Primary Voltage Discount:
If Customer takes service at 11 kV (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kVA of demand per month.
Minimum:
The demand charge unless a higher minimum is required under contract
to cover special conditions.

ANNUAL MINIMUM: $848,870
Any annual minimum deficiency will be determined during the April billing cycle for
the previous 12-month period. For a customer who has taken service on this schedule for
less than 12 months, the annual minimum will be prorated based on the actual months of
service. The annual minimum will also be prorated if base rates change during the 12-month
period. The annual minimum is based on 916,667 kWh’s per month (11,000,000 kWh’s
annually), plus twelve months multiplied by the monthly minimum demand charge for the
first 3,000 kVa of demand. The annual minimum reflected above is based on base

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 41 of 64

SCHEDULE 25

EXTRA LARGE GENERAL SERVICE - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation for a demand of not less than
2,500 kVA but not greater than 25,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. If the Customer has less than twelve months of billing history, the Customer
must have a minimum of six consecutive billing months of demand of at least 2,500 kVA in
order to receive service under this schedule. New Customers must meet the above
criteria or otherwise provide the Company with reasonable assurance that their peak
demand will average at least 2,500 kVA. Customer shall provide and maintain all
transformers and other necessary equipment on his side of the point of delivery and enter
into a written contract for five (5) years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
First 500,000 kWh 6.671¢ per kWh
All Over 500,000 kWh 5.588¢ per kWh
Demand Charge:
$17,000.00 for the first 3,000 kVA of demand or less.
$6.25 per kVA for each additional kVA of demand.
Primary Voltage Discount:
If Customer takes service at 11 kV (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kVA of demand per month.
Minimum:
The demand charge unless a higher minimum is required under contract
to cover special conditions.

ANNUAL MINIMUM: $883,660
Any annual minimum deficiency will be determined during the April billing cycle for
the previous 12-month period. For a customer who has taken service on this schedule for
less than 12 months, the annual minimum will be prorated based on the actual months of
service. The annual minimum will also be prorated if base rates change during the 12-month
period. The annual minimum is based on 916,667 kWh’s per month (11,000,000 kWh’s
annually), plus twelve months multiplied by the monthly minimum demand charge for the
first 3,000 kVa of demand. The annual minimum reflected above is based on base

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 42 of 64
SCHEDULE 25P

EXTRA LARGE GENERAL SERVICE TO CLEARWATER PAPER’S FACILITY - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Clearwater Paper Corporation’s Lewiston, Idaho Facility.

APPLICABLE:
To general service supplied for all power requirements with a demand of not less than
2,500 kVA but not greater than 110,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. Customer shall provide and maintain all transformers and other necessary
equipment on its side of the point of delivery and enter into a written contract for five (5)
years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
Block 1 Retail Meter 4.830¢ per kWh
Block 2 Generation Meter 2.456¢ per kWh

Demand Charge as measured at the Retail Meter:
$16,000.00 for the first 3,000 kVA of demand or less.
1st Demand Block: $5.75 per kVA for each additional kVA of demand up to
55,000 kVA.
2nd Demand Block: $3.00 per kVA for each additional kVA of demand above
55,000 kVA.

Primary Voltage Discount as measured at the Retail Meter:
If Customer takes service at 11 kV (wye grounded) or higher, it will be allowed
a primary voltage discount of 20¢ per kVA of demand per month.

Minimum:
The demand charge unless a higher minimum is required under contract to
cover special conditions.

ANNUAL MINIMUM: $723,300
Any annual minimum deficiency will be determined during the April billing cycle for the
previous 12-month period. The annual minimum is based on 916,667 kWh’s per month priced
at the Block 1 per kWh rate, plus twelve months multiplied by the monthly minimum demand
charge for the first 3,000 kVa of demand. The annual minimum reflected above is based on
base revenues only. Any other revenues paid in billed rates (such as the DSM Tariff Rider
Schedule 91) do not factor into the annual minimum calculation.
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 43 of 64
SCHEDULE 25P

EXTRA LARGE GENERAL SERVICE TO CLEARWATER PAPER’S FACILITY - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Clearwater Paper Corporation’s Lewiston, Idaho Facility.

APPLICABLE:
To general service supplied for all power requirements with a demand of not less than
2,500 kVA but not greater than 110,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. Customer shall provide and maintain all transformers and other necessary
equipment on its side of the point of delivery and enter into a written contract for five (5)
years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
Block 1 Retail Meter 4.992¢ per kWh
Block 2 Generation Meter 2.456¢ per kWh

Demand Charge as measured at the Retail Meter:
$17,000.00 for the first 3,000 kVA of demand or less.
1st Demand Block: $6.25 per kVA for each additional kVA of demand up to
55,000 kVA.
2nd Demand Block: $3.00 per kVA for each additional kVA of demand above
55,000 kVA.

Primary Voltage Discount as measured at the Retail Meter:
If Customer takes service at 11 kV (wye grounded) or higher, it will be allowed
a primary voltage discount of 20¢ per kVA of demand per month.

Minimum:
The demand charge unless a higher minimum is required under contract to
cover special conditions.

ANNUAL MINIMUM: $753,120
Any annual minimum deficiency will be determined during the April billing cycle for the
previous 12-month period. The annual minimum is based on 916,667 kWh’s per month priced
at the Block 1 per kWh rate, plus twelve months multiplied by the monthly minimum demand
charge for the first 3,000 kVa of demand. The annual minimum reflected above is based on
base revenues only. Any other revenues paid in billed rates (such as the DSM Tariff Rider
Schedule 91) do not factor into the annual minimum calculation.
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 44 of 64
SCHEDULE 31
PUMPING SERVICE - IDAHO
(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service through one meter for pumping water or water effluents, including
incidental power used for other equipment and lighting essential to the pumping operation.
For such incidental service, Customer will furnish any transformers and other necessary
equipment. Customer may be required to enter into a written contract for five (5) years or
longer and will have service available on a continuous basis unless there is a change in
ownership or control of property served.

MONTHLY RATE:
The sum of the following charges:
$16.00 Basic Charge, plus
Energy Charge:
11.766¢ per kWh for the first 85 KWh per kW of demand, and for the next 80
KWh per kW of demand but not more than 3,000 KWh.
9.936¢ per KWh for all additional KWh.

Annual Minimum:
$12.00 per kW of the highest demand established in the current year ending
with the November billing cycle. If no demand occurred in the current year, the
annual minimum will be based on the highest demand in the latest previous
year having a demand.

Demand:
The average kW supplied during the 15-minute period of maximum use during
the month determined, at the option of Company, by a demand meter or
nameplate input rating of pump motor.

SPECIAL TERMS AND CONDITIONS:
If Customer requests the account to be closed by reason of change in ownership or
control of property, the unbilled service and any applicable annual minimum will be
prorated to the date of closing.
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 45 of 64
SCHEDULE 31
PUMPING SERVICE - IDAHO
(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service through one meter for pumping water or water effluents, including
incidental power used for other equipment and lighting essential to the pumping operation.
For such incidental service, Customer will furnish any transformers and other necessary
equipment. Customer may be required to enter into a written contract for five (5) years or
longer and will have service available on a continuous basis unless there is a change in
ownership or control of property served.

MONTHLY RATE:
The sum of the following charges:
$18.00 Basic Charge, plus
Energy Charge:
12.218¢ per kWh for the first 85 KWh per kW of demand, and for the next 80
KWh per kW of demand but not more than 3,000 KWh.
10.318¢ per KWh for all additional KWh.

Annual Minimum:
$12.00 per kW of the highest demand established in the current year ending
with the November billing cycle. If no demand occurred in the current year, the
annual minimum will be based on the highest demand in the latest previous
year having a demand.

Demand:
The average kW supplied during the 15-minute period of maximum use during
the month determined, at the option of Company, by a demand meter or
nameplate input rating of pump motor.

SPECIAL TERMS AND CONDITIONS:
If Customer requests the account to be closed by reason of change in ownership or
control of property, the unbilled service and any applicable annual minimum will be
prorated to the date of closing.
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 46 of 64

SCHEDULE 41

COMPANY OWNED STREET LIGHT SERVICE-IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981,
except where Company and customer agree, mercury vapor lamps may be
installed to provide compatibility with existing light sources.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application.

MONTHLY RATE:

Pole Facility
Fixture Metal Standard
& Size Wood Pedestal Direct Developer
(Lumens) No Pole Pole Base Burial Contributed
Code Rate Code Rate Code Rate Code Rate Code Rate

Single Mercury Vapor

7000 411 $ 18.89 416 $ 18.89

*Not available to new customers accounts, or locations.
#Decorative Curb.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 47 of 64

SCHEDULE 41

COMPANY OWNED STREET LIGHT SERVICE-IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981,
except where Company and customer agree, mercury vapor lamps may be
installed to provide compatibility with existing light sources.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application.

MONTHLY RATE:

Pole Facility
Fixture Metal Standard
& Size Wood Pedestal Direct Developer
(Lumens) No Pole Pole Base Burial Contributed
Code Rate Code Rate Code Rate Code Rate Code Rate

Single Mercury Vapor

7000 411 $ 19.68 416 $ 19.68

*Not available to new customers accounts, or locations.
#Decorative Curb.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 48 of 64
SCHEDULE 42

COMPANY OWNED STREET LIGHT SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application. Closed to new
installations of sodium vapor lamps as of January 1, 2018, except where
Company and customer agree, sodium vapor lamps may be installed to provide
compatibility with existing light sources.

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
50W 235 $13.31 234# $16.62
100W 434# $17.46
100W 431/435 $16.20 432 $30.59 433 $30.59 436 $16.96
200W 531/535 $26.84 532 $41.19 533 $41.19 536 $27.65
250W 631/635 $31.51 632 $45.87 633 $45.87 636 $32.32
400W 831/835 $47.29 832 $61.67

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 446 $34.06
200W 545 $53.69 542 $69.77 546 $54.48
#Decorative Curb

Decorative Sodium Vapor
100W Granville 474* $31.59
100W Post Top 484* $30.32
100W Kim Light 438** $17.47

*16' fiberglass pole
**25' fiberglass pole
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 49 of 64
SCHEDULE 42

COMPANY OWNED STREET LIGHT SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application. Closed to new
installations of sodium vapor lamps as of January 1, 2018, except where
Company and customer agree, sodium vapor lamps may be installed to provide
compatibility with existing light sources.

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
50W 235 $13.87 234# $17.32
100W 434# $18.19
100W 431/435 $16.88 432 $31.87 433 $31.87 436 $17.67
200W 531/535 $27.96 532 $42.91 533 $42.91 536 $28.81
250W 631/635 $32.83 632 $47.79 633 $47.79 636 $33.67
400W 831/835 $49.27 832 $64.25

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 446 $35.49
200W 545 $55.94 542 $72.69 546 $56.76
#Decorative Curb

Decorative Sodium Vapor
100W Granville 474* $32.91
100W Post Top 484* $31.59
100W Kim Light 438** $18.20

*16' fiberglass pole
**25' fiberglass pole
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 50 of 64
SCHEDULE 42A - Continued

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed Code Rate Code Rate Code Rate Code Rate

Single Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 935L $13.93 434L# $17.46 70W 431/435L $16.20 432L $30.59 433L $30.59 436L $16.96
107W 531/535L $26.84 532L $41.19 533L $41.19 536L $27.65
248W 831/835L $47.29 832L $61.67 833L $61.67 836L $48.08

Double Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 441L $34.06 442L $48.54 446L $34.06
107W 545L $53.69 542L $69.77 546L $54.48
#Decorative Curb
Decorative LED
70W Granville 475L $24.30 474L* $31.59
70W Post Top 484L* $30.32
70W (30ft Fiberglass Pole) 494L $29.58
70W (35’ Fiberglass Pole) 594L $32.60

*16' fiberglass pole

Custom Street Light Calculation
Customers who choose to add street light fixtures that are outside of the offerings listed above will
be quoted a fixed monthly rate based on the following rate calculation. The three components
detailed below will be added together to develop the new Schedule 42 rate.

Step 1 – The capital component will be determined by multiplying an engineering estimate of the
installed cost of the new light component, or fixture, by the Capital Recovery Factor of 11.468%.

Step 2 – The maintenance component will either be the embedded maintenance cost of a similar
existing fixture or an engineering estimate of the maintenance cost of a new fixture. The
maintenance component for an existing light can be derived by subtracting the Schedule 46
(energy) light code monthly charge from the same Schedule 44 light code monthly charge
(maintenance and energy).

Step 3 – The energy component will be the energy cost of the same wattage light under Schedule
46.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 51 of 64
SCHEDULE 42A - Continued

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed Code Rate Code Rate Code Rate Code Rate

Single Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 935L $14.51 434L# $18.19 70W 431/435L $16.88 432L $31.87 433L $31.87 436L $17.67
107W 531/535L $27.96 532L $42.91 533L $42.91 536L $28.81
248W 831/835L $49.27 832L $64.25 833L $64.25 836L $50.09

Double Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 441L $35.49 442L $50.57 446L $35.49
107W 545L $55.94 542L $72.69 546L $56.76
#Decorative Curb
Decorative LED
70W Granville 475L $25.32 474L* $32.91
70W Post Top 484L* $31.59
70W (30ft Fiberglass Pole) 494L $30.82
70W (35’ Fiberglass Pole) 594L $33.97

*16' fiberglass pole

Custom Street Light Calculation
Customers who choose to add street light fixtures that are outside of the offerings listed above will
be quoted a fixed monthly rate based on the following rate calculation. The three components
detailed below will be added together to develop the new Schedule 42 rate.

Step 1 – The capital component will be determined by multiplying an engineering estimate of the
installed cost of the new light component, or fixture, by the Capital Recovery Factor of 11.468%.

Step 2 – The maintenance component will either be the embedded maintenance cost of a similar
existing fixture or an engineering estimate of the maintenance cost of a new fixture. The
maintenance component for an existing light can be derived by subtracting the Schedule 46
(energy) light code monthly charge from the same Schedule 44 light code monthly charge
(maintenance and energy).

Step 3 – The energy component will be the energy cost of the same wattage light under Schedule
46.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 52 of 64

SCHEDULE 44
CUSTOMER OWNED STREET LIGHT ENERGY AND MAINTENANCE SERVICE -
IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory served by
Company. Closed to new installations effective January 1, 2016.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and thoroughfares
upon receipt of an authorized application.

MONTHLY RATE: Pole Facility Metal Standard
Fixture & Size
(Lumens) No Pole Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate
Single High-Pressure
Sodium Vapor

100W 435 $12.36 432 $12.36 200W 535 $18.64 532 $18.64 250W 635 $20.95 632 $20.95 633 $20.95
400W 835 $33.39 832 $33.40
150W 936 $16.22

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing and owning standards, luminaries
and necessary circuitry and related facilities to connect with Company designated points of
delivery. All such facilities will conform to Company's design, standards and
specifications. Customer is also responsible for painting (if desired) and replacing
damaged pole facilities.
Company will furnish the necessary energy, repairs and maintenance work
including lamp and glassware cleaning and replacement. Repairs and maintenance work
will be performed by Company during regularly scheduled working hours.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 53 of 64

SCHEDULE 44
CUSTOMER OWNED STREET LIGHT ENERGY AND MAINTENANCE SERVICE -
IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory served by
Company. Closed to new installations effective January 1, 2016.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and thoroughfares
upon receipt of an authorized application.

MONTHLY RATE: Pole Facility Metal Standard
Fixture & Size
(Lumens) No Pole Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate
Single High-Pressure
Sodium Vapor

100W 435 $12.88 432 $12.88 200W 535 $19.42 532 $19.42 250W 635 $21.83 632 $21.83 633 $21.83
400W 835 $34.79 832 $34.80
150W 936 $16.90

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing and owning standards, luminaries
and necessary circuitry and related facilities to connect with Company designated points of
delivery. All such facilities will conform to Company's design, standards and
specifications. Customer is also responsible for painting (if desired) and replacing
damaged pole facilities.
Company will furnish the necessary energy, repairs and maintenance work
including lamp and glassware cleaning and replacement. Repairs and maintenance work
will be performed by Company during regularly scheduled working hours.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 54 of 64

SCHEDULE 45

CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981, except
where Company and customer agree, mercury vapor lamps may be installed to
provide compatibility with existing light sources.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:
Per Luminaire
Dusk to
Fixture Dawn
& Size Service
(Lumens) Code Rate

Mercury Vapor
10000 515 $ 9.09
20000# 615 16.50
#Also includes Metal Halide.

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will
be provided.

Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule
91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 55 of 64

SCHEDULE 45

CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981, except
where Company and customer agree, mercury vapor lamps may be installed to
provide compatibility with existing light sources.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:
Per Luminaire
Dusk to
Fixture Dawn
& Size Service
(Lumens) Code Rate

Mercury Vapor
10000 515 $ 9.47
20000# 615 17.19
#Also includes Metal Halide.

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will
be provided.

Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule
91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 56 of 64

SCHEDULE 46
CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:

Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 435 $ 5.63
200W 535 10.52
250W 635 12.94
310W 735 15.38
400W 835 19.63
150W 935 8.12

LED
01 – 10W 005L $ 0.25
11 – 20W 015L 0.62
21 – 30W 025L 1.11
31 – 40W 035L 1.61
41 – 50W 045L 1.99
51 – 60W 055L 2.48
61 – 70W 065L 2.85
71 – 80W 075L 3.34
81 – 90W 085L 3.84
91 – 100W 095L 4.21
101 – 110W 105L 4.71

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 57 of 64

SCHEDULE 46
CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:

Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 435 $ 5.87
200W 535 10.96
250W 635 13.48
310W 735 16.02
400W 835 20.45
150W 935 8.46

LED
01 – 10W 005L $ 0.26
11 – 20W 015L 0.65
21 – 30W 025L 1.16
31 – 40W 035L 1.68
41 – 50W 045L 2.07
51 – 60W 055L 2.58
61 – 70W 065L 2.97
71 – 80W 075L 3.48
81 – 90W 085L 4.00
91 – 100W 095L 4.39
101 – 110W 105L 4.91

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 58 of 64

SCHEDULE 46A - Continued

MONTHLY RATE:
Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

111 - 120W 115L $ 5.08
121 - 130W 125L 5.58
131 - 140W 135L 6.07
141 - 150W 145L 6.44
151 - 160W 155L 6.93
161 - 170W 165L 7.30
171 - 180W 175L 7.80
181 - 190W 185L 8.30
191 - 200W 195L 8.68
201 - 225W 212L 9.54
226 - 250W 237L 10.66

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will be
provided.
Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 59 of 64

SCHEDULE 46A - Continued

MONTHLY RATE:
Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

111 - 120W 115L $ 5.29
121 - 130W 125L 5.81
131 - 140W 135L 6.32
141 - 150W 145L 6.71
151 - 160W 155L 7.22
161 - 170W 165L 7.61
171 - 180W 175L 8.13
181 - 190W 185L 8.65
191 - 200W 195L 9.04
201 - 225W 212L 9.94
226 - 250W 237L 11.11

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will be
provided.
Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 60 of 64

SCHEDULE 47

AREA LIGHTING - MERCURY VAPOR - IDAHO
(Single phase and available voltage)

AVAILABLE:
In all Idaho territory served by Company where existing secondary
distribution facilities are of adequate capacity, phase, and voltage.

APPLICABLE:
To annual operation of dusk-to-dawn area lighting with mercury vapor lamps
upon receipt of a Customer contract for five (5) years or more. Mercury vapor
lamps will be available only to those customers receiving service on October 23,
1981.

MONTHLY RATE:
Charge per Unit
Nominal Lumens)
7,000 10,000 20,000

Luminaire (on existing standard) $ 18.89 $ 22.88 $ 32.49

Luminaire and Standard:

30-foot wood pole 23.64 27.65 37.26

Galvanized steel standards:
25 foot 44.70

Monthly Rate
per Pole
Pole Facility
30-foot wood pole $ 7.78
55-foot wood pole 15.07
20-foot fiberglass-direct burial 7.78

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 61 of 64

SCHEDULE 47

AREA LIGHTING - MERCURY VAPOR - IDAHO
(Single phase and available voltage)

AVAILABLE:
In all Idaho territory served by Company where existing secondary
distribution facilities are of adequate capacity, phase, and voltage.

APPLICABLE:
To annual operation of dusk-to-dawn area lighting with mercury vapor lamps
upon receipt of a Customer contract for five (5) years or more. Mercury vapor
lamps will be available only to those customers receiving service on October 23,
1981.

MONTHLY RATE:
Charge per Unit
Nominal Lumens)
7,000 10,000 20,000

Luminaire (on existing standard) $ 19.68 $ 23.84 $ 33.85

Luminaire and Standard:

30-foot wood pole 24.63 28.81 38.82

Galvanized steel standards:
25 foot 46.57

Monthly Rate
per Pole
Pole Facility
30-foot wood pole $ 8.11
55-foot wood pole 15.70
20-foot fiberglass-direct burial 8.11

Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 62 of 64
SCHEDULE 49

AREA LIGHTING - IDAHO
(Single phase and available voltage)
AVAILABLE:
In all territory served by the Company where existing secondary distribution facilities
are of adequate capacity, phase, and voltage.
APPLICABLE:
To annual operation of dusk-to-dawn area lighting with high-pressure sodium vapor
lamps upon receipt of a Customer contract for five (5) years or more.
MONTHLY RATE:

HIGH PRESSURE SODIUM VAPOR Charge per Unit
(Nominal Rating in Watts)
Luminaire 100W 200W 250W 400W
Cobrahead $15.07 $19.94 $23.04 $29.57
Decorative Curb $15.07

100W Post Top w/16-foot decorative pole $36.38
100W Kim Light w/25-foot fiberglass pole $22.86
400W Flood (No pole) $36.13

LIGHT EMITTING DIODE (LED) Charge per Unit
(Nominal Rating in Watts)
Luminaire 70W 107W 125W 248W
Cobrahead $15.07 $19.94 $29.57
Decorative Curb $15.07

70W Granville w/16-foot decorative pole $40.06
70W Post Top w/16-foot decorative pole $36.38
70W 30ft fiberglass direct buried $29.58
107W 35ft fiberglass direct buried $34.40
125W Flood (No Pole) $18.35
125W Flood (40ft Pole) $31.14
248W Flood (No Pole) $36.13

Pole Facility Monthly Rate per Pole
30-foot wood pole $7.78
40-foot wood pole $12.78
55-foot wood pole $15.03
20-foot fiberglass $7.78
25-foot galvanized steel standard $12.14
30-foot galvanized steel standard* $13.43
25-foot galvanized aluminum standard* $14.83
30-foot fiberglass-pedestal base $37.15
30-foot steel-pedestal base $34.29
35 foot steel direct buried $34.29
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 63 of 64
SCHEDULE 49

AREA LIGHTING - IDAHO
(Single phase and available voltage)
AVAILABLE:
In all territory served by the Company where existing secondary distribution facilities
are of adequate capacity, phase, and voltage.
APPLICABLE:
To annual operation of dusk-to-dawn area lighting with high-pressure sodium vapor
lamps upon receipt of a Customer contract for five (5) years or more.
MONTHLY RATE:

HIGH PRESSURE SODIUM VAPOR Charge per Unit
(Nominal Rating in Watts)
Luminaire 100W 200W 250W 400W
Cobrahead $15.70 $20.78 $24.00 $30.81
Decorative Curb $15.70

100W Post Top w/16-foot decorative pole $37.90
100W Kim Light w/25-foot fiberglass pole $23.82
400W Flood (No pole) $37.64

LIGHT EMITTING DIODE (LED) Charge per Unit
(Nominal Rating in Watts)
Luminaire 70W 107W 125W 248W
Cobrahead $15.70 $20.78 $30.81
Decorative Curb $15.70

70W Granville w/16-foot decorative pole $41.74
70W Post Top w/16-foot decorative pole $37.90
70W 30ft fiberglass direct buried $30.82
107W 35ft fiberglass direct buried $35.84
125W Flood (No Pole) $19.12
125W Flood (40ft Pole) $32.44
248W Flood (No Pole) $37.64

Pole Facility Monthly Rate per Pole
30-foot wood pole $8.11
40-foot wood pole $13.32
55-foot wood pole $15.66
20-foot fiberglass $8.11
25-foot galvanized steel standard $12.65
30-foot galvanized steel standard* $13.99
25-foot galvanized aluminum standard* $15.45
30-foot fiberglass-pedestal base $38.71
30-foot steel-pedestal base $35.73
35 foot steel direct buried $35.73
Exhibit No. 18 Case No. AVU-E-23-01 J. Miller, Avista
Schedule 1, Page 64 of 64
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 1 of 33
Seventeenth Revision Sheet 1
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 1
AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs
SCHEDULE 1
RESIDENTIAL SERVICE - IDAHO
(Single phase & available voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.
APPLICABLE:
To service for domestic purposes in each individual residence, apartment, mobile
home, or other living unit when all such service used on the premises is supplied through
a single meter.
Where a portion of a dwelling is used regularly for the conduct of business or
where a portion of the electricity supplied is used for other than domestic purposes, the
appropriate general service schedule is applicable. However, if the service for all
domestic purposes is metered separately, this schedule will be applied to such service.
When two or more living units are served through a single meter, the appropriate general
service schedule is applicable.
MONTHLY RATE:
$15.00 Basic Charge, plus
First 600 kWh 9.770¢ per kWh
All over 600 kWh 10.979¢ per kWh
Monthly Minimum Charge: $15.00
OPTIONAL SEASONAL MONTHLY CHARGE:
A $15.00 monthly charge shall apply to Customers who close their account on a
seasonal or intermittent basis, provided no energy usage occurs during an entire monthly
billing cycle while the account is closed. Customers choosing this option are required to
notify the Company in writing or by phone in advance and the account will be closed at
the start of the next billing cycle following notification. If energy is used during a monthly
billing cycle, the above listed energy charges and basic charge of $15.00 shall apply.
SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Residential and Farm Energy Rate Adjustment Schedule 59,
Temporary Power Cost Adjustment Schedule 66, Fixed Cost Adjustment Mechanism
Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment
Schedule 91.
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 2 of 33

Seventeenth Revision Sheet 11
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 11

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 11

GENERAL SERVICE - IDAHO

(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service
available.

APPLICABLE:
To general service supplied for all power requirements when all such service
taken on the premises is supplied through one meter installation.

MONTHLY RATE:
The sum of the following charges:

$18.00 Basic Charge, plus
Energy Charge:
First 3650 kWh 10.519¢ per kWh
All Over 3650 kWh 7.371¢ per kWh

Demand Charge:
No charge for the first 20 kW of demand.
$6.50 per kW for each additional kW of demand.

Minimum:
$18.00 for single phase service and $25.10 for three phase service;
unless a higher minimum is required under contract to cover special
conditions.

DEMAND:
The average kW supplied during the 15-minute period of maximum use
during the month as determined by a demand meter.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.

The above Monthly Rates are subject to increases or decreases as set forth
in Tax Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66,
Fixed Cost Adjustment Mechanism Schedule 75, Tax Customer Credit Schedule 76
and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 3 of 33

Seventeenth Revision Sheet 21
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 21

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 21
LARGE GENERAL SERVICE - IDAHO
(Available phase and voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.
APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation. Customer shall provide and
maintain all transformers and other necessary equipment on his side of the point of
delivery and may be required to enter into a written contract for five (5) years or longer.

MONTHLY RATE:
The sum of the following demand and energy charges:
Energy Charge:
First 250,000 kWh 7.398¢ per kWh
All Over 250,000 kWh 6.235¢ per kWh
Demand Charge:
$500.00 for the first 50 kW of demand or less.
$6.50 per kW for each additional kW of demand.
Primary Voltage Discount:
If Customer takes service at 11 kv (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kW of demand per month.
Power Factor Adjustment Charge:
If Customer has a reactive kilovolt-ampere (kVAr) meter, he will be subject to
a Power Factor Adjustment charge, as set forth in the Rules & Regulations.
Minimum:
$500.00, unless a higher minimum is required under contract to cover special
conditions.
ANNUAL MINIMUM:
The current 12-month billing including any charges for power factor correction shall
be not less than $10.00 per kW of the highest demand established during the current 12-
month period provided that such highest demand shall be adjusted by the elimination of
any demand occasioned by an operation totally abandoned during such 12-month period.
DEMAND:
The average kW supplied during the 15-minute period of maximum use during the
month as determined by a demand meter.
SPECIAL TERMS AND CONDITIONS:
Customers served at 11 kv or higher shall provide and maintain all transformers and
other necessary equipment on their side of the point of delivery.
Service under this schedule is subject to the Rules and Regulations contained in this
tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 4 of 33

Seventeenth Revision Sheet 25
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 25

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 25

EXTRA LARGE GENERAL SERVICE - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation for a demand of not less than
2,500 kVA but not greater than 25,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. If the Customer has less than twelve months of billing history, the Customer
must have a minimum of six consecutive billing months of demand of at least 2,500 kVA in
order to receive service under this schedule. New Customers must meet the above
criteria or otherwise provide the Company with reasonable assurance that their peak
demand will average at least 2,500 kVA. Customer shall provide and maintain all
transformers and other necessary equipment on his side of the point of delivery and enter
into a written contract for five (5) years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
First 500,000 kWh 6.447¢ per kWh
All Over 500,000 kWh 5.401¢ per kWh
Demand Charge:
$16,000.00 for the first 3,000 kVA of demand or less.
$5.75 per kVA for each additional kVA of demand.
Primary Voltage Discount:
If Customer takes service at 11 kV (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kVA of demand per month.
Minimum:
The demand charge unless a higher minimum is required under contract
to cover special conditions.

ANNUAL MINIMUM: $848,870
Any annual minimum deficiency will be determined during the April billing cycle for
the previous 12-month period. For a customer who has taken service on this schedule for
less than 12 months, the annual minimum will be prorated based on the actual months of
service. The annual minimum will also be prorated if base rates change during the 12-month
period. The annual minimum is based on 916,667 kWh’s per month (11,000,000 kWh’s
annually), plus twelve months multiplied by the monthly minimum demand charge for the
first 3,000 kVa of demand. The annual minimum reflected above is based on base

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 5 of 33

Seventeenth Revision Sheet 25P
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 25P

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 25P

EXTRA LARGE GENERAL SERVICE TO CLEARWATER PAPER’S FACILITY - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Clearwater Paper Corporation’s Lewiston, Idaho Facility.

APPLICABLE:
To general service supplied for all power requirements with a demand of not less than
2,500 kVA but not greater than 110,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. Customer shall provide and maintain all transformers and other necessary
equipment on its side of the point of delivery and enter into a written contract for five (5)
years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
Block 1 Retail Meter 4.830¢ per kWh
Block 2 Generation Meter 2.456¢ per kWh

Demand Charge as measured at the Retail Meter:
$16,000.00 for the first 3,000 kVA of demand or less.
1st Demand Block: $5.75 per kVA for each additional kVA of demand up to
55,000 kVA.
2nd Demand Block: $3.00 per kVA for each additional kVA of demand above
55,000 kVA.

Primary Voltage Discount as measured at the Retail Meter:
If Customer takes service at 11 kV (wye grounded) or higher, it will be allowed
a primary voltage discount of 20¢ per kVA of demand per month.

Minimum:
The demand charge unless a higher minimum is required under contract to
cover special conditions.

ANNUAL MINIMUM: $723,300
Any annual minimum deficiency will be determined during the April billing cycle for the
previous 12-month period. The annual minimum is based on 916,667 kWh’s per month priced
at the Block 1 per kWh rate, plus twelve months multiplied by the monthly minimum demand
charge for the first 3,000 kVa of demand. The annual minimum reflected above is based on
base revenues only. Any other revenues paid in billed rates (such as the DSM Tariff Rider
Schedule 91) do not factor into the annual minimum calculation.
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 6 of 33

Seventeenth Revision Sheet 31
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 31

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 31
PUMPING SERVICE - IDAHO
(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service through one meter for pumping water or water effluents, including
incidental power used for other equipment and lighting essential to the pumping operation.
For such incidental service, Customer will furnish any transformers and other necessary
equipment. Customer may be required to enter into a written contract for five (5) years or
longer and will have service available on a continuous basis unless there is a change in
ownership or control of property served.

MONTHLY RATE:
The sum of the following charges:
$16.00 Basic Charge, plus
Energy Charge:
11.766¢ per kWh for the first 85 KWh per kW of demand, and for the next 80
KWh per kW of demand but not more than 3,000 KWh.
9.936¢ per KWh for all additional KWh.

Annual Minimum:
$12.00 per kW of the highest demand established in the current year ending
with the November billing cycle. If no demand occurred in the current year, the
annual minimum will be based on the highest demand in the latest previous
year having a demand.

Demand:
The average kW supplied during the 15-minute period of maximum use during
the month determined, at the option of Company, by a demand meter or
nameplate input rating of pump motor.

SPECIAL TERMS AND CONDITIONS:
If Customer requests the account to be closed by reason of change in ownership or
control of property, the unbilled service and any applicable annual minimum will be
prorated to the date of closing.
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 7 of 33

Sixteenth Revision Sheet 41
Canceling
I.P.U.C. No.28 Fifteenth Revision Sheet 41

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 41

COMPANY OWNED STREET LIGHT SERVICE-IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981,
except where Company and customer agree, mercury vapor lamps may be
installed to provide compatibility with existing light sources.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application.

MONTHLY RATE:

Pole Facility
Fixture Metal Standard
& Size Wood Pedestal Direct Developer
(Lumens) No Pole Pole Base Burial Contributed
Code Rate Code Rate Code Rate Code Rate Code Rate

Single Mercury Vapor

7000 411 $ 18.89 416 $ 18.89

*Not available to new customers accounts, or locations.
#Decorative Curb.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 8 of 33

Sixteenth Revision Sheet 42
Canceling
I.P.U.C. No. 28 Substitute Fifteenth Revision Sheet 42

AVISTA CORPORATION
dba Avista Utilities
Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 42

COMPANY OWNED STREET LIGHT SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application. Closed to new
installations of sodium vapor lamps as of January 1, 2018, except where
Company and customer agree, sodium vapor lamps may be installed to provide
compatibility with existing light sources.

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
50W 235 $13.31 234# $16.62
100W 434# $17.46
100W 431/435 $16.20 432 $30.59 433 $30.59 436 $16.96
200W 531/535 $26.84 532 $41.19 533 $41.19 536 $27.65
250W 631/635 $31.51 632 $45.87 633 $45.87 636 $32.32
400W 831/835 $47.29 832 $61.67

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 446 $34.06
200W 545 $53.69 542 $69.77 546 $54.48
#Decorative Curb

Decorative Sodium Vapor
100W Granville 474* $31.59
100W Post Top 484* $30.32
100W Kim Light 438** $17.47

*16' fiberglass pole
**25' fiberglass pole
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 9 of 33

Thirteenth Revision Sheet 42A
Canceling
I.P.U.C. No. 28 Twelfth Revision Sheet 42A

AVISTA CORPORATION
dba Avista Utilities
Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 42A - Continued

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed Code Rate Code Rate Code Rate Code Rate

Single Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 935L $13.93 434L# $17.46 70W 431/435L $16.20 432L $30.59 433L $30.59 436L $16.96
107W 531/535L $26.84 532L $41.19 533L $41.19 536L $27.65
248W 831/835L $47.29 832L $61.67 833L $61.67 836L $48.08

Double Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 441L $34.06 442L $48.54 446L $34.06
107W 545L $53.69 542L $69.77 546L $54.48
#Decorative Curb
Decorative LED
70W Granville 475L $24.30 474L* $31.59
70W Post Top 484L* $30.32
70W (30ft Fiberglass Pole) 494L $29.58
70W (35’ Fiberglass Pole) 594L $32.60

*16' fiberglass pole

Custom Street Light Calculation
Customers who choose to add street light fixtures that are outside of the offerings listed above will
be quoted a fixed monthly rate based on the following rate calculation. The three components
detailed below will be added together to develop the new Schedule 42 rate.

Step 1 – The capital component will be determined by multiplying an engineering estimate of the
installed cost of the new light component, or fixture, by the Capital Recovery Factor of 11.468%.

Step 2 – The maintenance component will either be the embedded maintenance cost of a similar
existing fixture or an engineering estimate of the maintenance cost of a new fixture. The
maintenance component for an existing light can be derived by subtracting the Schedule 46
(energy) light code monthly charge from the same Schedule 44 light code monthly charge
(maintenance and energy).

Step 3 – The energy component will be the energy cost of the same wattage light under Schedule
46.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 10 of 33

Sixteenth Revision Sheet 44
Canceling
I.P.U.C. No.28 Fifteenth Revision Sheet 44

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 44
CUSTOMER OWNED STREET LIGHT ENERGY AND MAINTENANCE SERVICE -
IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory served by
Company. Closed to new installations effective January 1, 2016.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and thoroughfares
upon receipt of an authorized application.

MONTHLY RATE: Pole Facility Metal Standard
Fixture & Size
(Lumens) No Pole Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate
Single High-Pressure
Sodium Vapor

100W 435 $12.36 432 $12.36 200W 535 $18.64 532 $18.64 250W 635 $20.95 632 $20.95 633 $20.95
400W 835 $33.39 832 $33.40
150W 936 $16.22

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing and owning standards, luminaries
and necessary circuitry and related facilities to connect with Company designated points of
delivery. All such facilities will conform to Company's design, standards and
specifications. Customer is also responsible for painting (if desired) and replacing
damaged pole facilities.
Company will furnish the necessary energy, repairs and maintenance work
including lamp and glassware cleaning and replacement. Repairs and maintenance work
will be performed by Company during regularly scheduled working hours.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 11 of 33

Sixteenth Revision Sheet 45
Canceling
I.P.U.C. No.28 Fifteenth Revision Sheet 45

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 45

CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981, except
where Company and customer agree, mercury vapor lamps may be installed to
provide compatibility with existing light sources.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:
Per Luminaire
Dusk to
Fixture Dawn
& Size Service
(Lumens) Code Rate

Mercury Vapor
10000 515 $ 9.09
20000# 615 16.50
#Also includes Metal Halide.

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will
be provided.

Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule
91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 12 of 33

Sixteenth Revision Sheet 46
Canceling
I.P.U.C. No.28 Fifteenth Revision Sheet 46

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 46
CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:

Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 435 $ 5.63
200W 535 10.52
250W 635 12.94
310W 735 15.38
400W 835 19.63
150W 935 8.12

LED
01 – 10W 005L $ 0.25
11 – 20W 015L 0.62
21 – 30W 025L 1.11
31 – 40W 035L 1.61
41 – 50W 045L 1.99
51 – 60W 055L 2.48
61 – 70W 065L 2.85
71 – 80W 075L 3.34
81 – 90W 085L 3.84
91 – 100W 095L 4.21
101 – 110W 105L 4.71

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 13 of 33

Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

Fifth Revision Sheet 46A
Canceling
I.P.U.C. No.28 Fourth Revision Sheet 46A

AVISTA CORPORATION
d/b/a Avista Utilities

SCHEDULE 46A - Continued

MONTHLY RATE:
Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

111 - 120W 115L $ 5.08
121 - 130W 125L 5.58
131 - 140W 135L 6.07
141 - 150W 145L 6.44
151 - 160W 155L 6.93
161 - 170W 165L 7.30
171 - 180W 175L 7.80
181 - 190W 185L 8.30
191 - 200W 195L 8.68
201 - 225W 212L 9.54
226 - 250W 237L 10.66

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will be
provided.
Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 14 of 33

Sixteenth Revision Sheet 47
Canceling
I.P.U.C. No.28 Fifteenth Revision Sheet 47

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 47

AREA LIGHTING - MERCURY VAPOR - IDAHO
(Single phase and available voltage)

AVAILABLE:
In all Idaho territory served by Company where existing secondary
distribution facilities are of adequate capacity, phase, and voltage.

APPLICABLE:
To annual operation of dusk-to-dawn area lighting with mercury vapor lamps
upon receipt of a Customer contract for five (5) years or more. Mercury vapor
lamps will be available only to those customers receiving service on October 23,
1981.

MONTHLY RATE:
Charge per Unit
Nominal Lumens)
7,000 10,000 20,000

Luminaire (on existing standard) $ 18.89 $ 22.88 $ 32.49

Luminaire and Standard:

30-foot wood pole 23.64 27.65 37.26

Galvanized steel standards:
25 foot 44.70

Monthly Rate
per Pole
Pole Facility
30-foot wood pole $ 7.78
55-foot wood pole 15.07
20-foot fiberglass-direct burial 7.78

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 15 of 33

Fifteenth Revision Sheet 49
Canceling
I.P.U.C. No.28 Fourteenth Revision Sheet 49

AVISTA CORPORATION
dba Avista Utilities
Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 49

AREA LIGHTING - IDAHO
(Single phase and available voltage)
AVAILABLE:
In all territory served by the Company where existing secondary distribution facilities
are of adequate capacity, phase, and voltage.
APPLICABLE:
To annual operation of dusk-to-dawn area lighting with high-pressure sodium vapor
lamps upon receipt of a Customer contract for five (5) years or more.
MONTHLY RATE:

HIGH PRESSURE SODIUM VAPOR Charge per Unit
(Nominal Rating in Watts)
Luminaire 100W 200W 250W 400W
Cobrahead $15.07 $19.94 $23.04 $29.57
Decorative Curb $15.07

100W Post Top w/16-foot decorative pole $36.38
100W Kim Light w/25-foot fiberglass pole $22.86
400W Flood (No pole) $36.13

LIGHT EMITTING DIODE (LED) Charge per Unit
(Nominal Rating in Watts)
Luminaire 70W 107W 125W 248W
Cobrahead $15.07 $19.94 $29.57
Decorative Curb $15.07

70W Granville w/16-foot decorative pole $40.06
70W Post Top w/16-foot decorative pole $36.38
70W 30ft fiberglass direct buried $29.58
107W 35ft fiberglass direct buried $34.40
125W Flood (No Pole) $18.35
125W Flood (40ft Pole) $31.14
248W Flood (No Pole) $36.13

Pole Facility Monthly Rate per Pole
30-foot wood pole $7.78
40-foot wood pole $12.78
55-foot wood pole $15.03
20-foot fiberglass $7.78
25-foot galvanized steel standard $12.14
30-foot galvanized steel standard* $13.43
25-foot galvanized aluminum standard* $14.83
30-foot fiberglass-pedestal base $37.15
30-foot steel-pedestal base $34.29
35 foot steel direct buried $34.29
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 16 of 33

Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

Eleventh Revision Sheet 49A
Canceling
I.P.U.C. No.28 Tenth Revision Sheet 49A

AVISTA CORPORATION
dba Avista Utilities
SCHEDULE 49A – Continued

Custom Area Light Calculation
Customers who choose to add area light fixtures that are outside of the offerings listed
above will be quoted a fixed monthly rate based on the following rate calculation. The
three components detailed below will be added together to develop the new Schedule 49
rate.

Step 1 – The capital component will be determined by multiplying an engineering
estimate of the installed cost of the new area light component, or fixture, by the Capital
Recovery Factor of 11.468%.

Step 2 – The maintenance component will be an engineering estimate of the
maintenance cost of a new fixture.

Step 3 – The energy component will be the energy cost of the same wattage light under
Schedule 46.

SPECIAL TERMS AND CONDITIONS:
The Company will install, own, and maintain the facilities for supplying dusk-to-
dawn area lighting service using overhead circuits. At the request of Customer, Company
will install underground cable for such service provided Customer, in advance of
construction, pays Company the excess cost of such installation.

The Company will furnish the necessary energy, repairs, and maintenance work
including lamp and glassware replacement. Repairs and maintenance work will be
performed by Company during regularly scheduled working hours. Individual lamps will
be replaced on burnout as soon as reasonably possible after notification by Customer
and subject to Company's operating schedules and requirements.

The Company will assess the Customer the following removal charges if the
Customer requests to discontinue service under this schedule within the initial five-year
contract period:
$25 per luminaire $75 per pole

Service under this schedule is subject to the Rules and Regulations contained in
this tariff.

The above Monthly Rates are subject to increases as set forth in Tax Adjustment
Schedule 58, Temporary Power Cost Adjustment Schedule 66, Energy Efficiency Rider
Tax Customer Credit Schedule 76 and Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 17 of 33
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 18 of 33

Eighteenth Revision Sheet 1
Canceling
I.P.U.C. No.28 Seventeenth Revision Sheet 1

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 1
RESIDENTIAL SERVICE - IDAHO
(Single phase & available voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service for domestic purposes in each individual residence, apartment, mobile
home, or other living unit when all such service used on the premises is supplied through
a single meter.
Where a portion of a dwelling is used regularly for the conduct of business or
where a portion of the electricity supplied is used for other than domestic purposes, the
appropriate general service schedule is applicable. However, if the service for all
domestic purposes is metered separately, this schedule will be applied to such service.
When two or more living units are served through a single meter, the appropriate general
service schedule is applicable.

MONTHLY RATE:
$20.00 Basic Charge, plus
First 600 kWh 9.734¢ per kWh
All over 600 kWh 10.939¢ per kWh

Monthly Minimum Charge: $20.00

OPTIONAL SEASONAL MONTHLY CHARGE:
A $20.00 monthly charge shall apply to Customers who close their account on a
seasonal or intermittent basis, provided no energy usage occurs during an entire monthly
billing cycle while the account is closed. Customers choosing this option are required to
notify the Company in writing or by phone in advance and the account will be closed at
the start of the next billing cycle following notification. If energy is used during a monthly
billing cycle, the above listed energy charges and basic charge of $20.00 shall apply.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.

The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Residential and Farm Energy Rate Adjustment Schedule 59,
Temporary Power Cost Adjustment Schedule 66, Fixed Cost Adjustment Mechanism
Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment
Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 19 of 33

Eighteenth Revision Sheet 11
Canceling
I.P.U.C. No.28 Seventeenth Revision Sheet 11

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 11

GENERAL SERVICE - IDAHO

(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service
available.

APPLICABLE:
To general service supplied for all power requirements when all such service
taken on the premises is supplied through one meter installation.

MONTHLY RATE:
The sum of the following charges:

$20.00 Basic Charge, plus
Energy Charge:
First 3650 kWh 10.853¢ per kWh
All Over 3650 kWh 7.604¢ per kWh

Demand Charge:
No charge for the first 20 kW of demand.
$7.00 per kW for each additional kW of demand.

Minimum:
$20.00 for single phase service and $27.10 for three phase service;
unless a higher minimum is required under contract to cover special
conditions.

DEMAND:
The average kW supplied during the 15-minute period of maximum use
during the month as determined by a demand meter.

SPECIAL TERMS AND CONDITIONS:
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.

The above Monthly Rates are subject to increases or decreases as set forth
in Tax Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66,
Fixed Cost Adjustment Mechanism Schedule 75, Tax Customer Credit Schedule 76
and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 20 of 33

Eighteenth Revision Sheet 21
Canceling
I.P.U.C. No.28 Seventeenth Revision Sheet 21

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 21
LARGE GENERAL SERVICE - IDAHO
(Available phase and voltage)
AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.
APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation. Customer shall provide and
maintain all transformers and other necessary equipment on his side of the point of
delivery and may be required to enter into a written contract for five (5) years or longer.

MONTHLY RATE:
The sum of the following demand and energy charges:
Energy Charge:
First 250,000 kWh 7.657¢ per kWh
All Over 250,000 kWh 6.455¢ per kWh
Demand Charge:
$525.00 for the first 50 kW of demand or less.
$7.00 per kW for each additional kW of demand.
Primary Voltage Discount:
If Customer takes service at 11 kv (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kW of demand per month.
Power Factor Adjustment Charge:
If Customer has a reactive kilovolt-ampere (kVAr) meter, he will be subject to
a Power Factor Adjustment charge, as set forth in the Rules & Regulations.
Minimum:
$525.00, unless a higher minimum is required under contract to cover special
conditions.
ANNUAL MINIMUM:
The current 12-month billing including any charges for power factor correction shall
be not less than $10.00 per kW of the highest demand established during the current 12-
month period provided that such highest demand shall be adjusted by the elimination of
any demand occasioned by an operation totally abandoned during such 12-month period.
DEMAND:
The average kW supplied during the 15-minute period of maximum use during the
month as determined by a demand meter.
SPECIAL TERMS AND CONDITIONS:
Customers served at 11 kv or higher shall provide and maintain all transformers and
other necessary equipment on their side of the point of delivery.
Service under this schedule is subject to the Rules and Regulations contained in this
tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 21 of 33

Eighteenth Revision Sheet 25
Canceling
I.P.U.C. No.28 Seventeenth Revision Sheet 25

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 25

EXTRA LARGE GENERAL SERVICE - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To general service supplied for all power requirements when all such service taken
on the premises is supplied through one meter installation for a demand of not less than
2,500 kVA but not greater than 25,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. If the Customer has less than twelve months of billing history, the Customer
must have a minimum of six consecutive billing months of demand of at least 2,500 kVA in
order to receive service under this schedule. New Customers must meet the above
criteria or otherwise provide the Company with reasonable assurance that their peak
demand will average at least 2,500 kVA. Customer shall provide and maintain all
transformers and other necessary equipment on his side of the point of delivery and enter
into a written contract for five (5) years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
First 500,000 kWh 6.671¢ per kWh
All Over 500,000 kWh 5.588¢ per kWh
Demand Charge:
$17,000.00 for the first 3,000 kVA of demand or less.
$6.25 per kVA for each additional kVA of demand.
Primary Voltage Discount:
If Customer takes service at 11 kV (wye grounded) or higher, he will be
allowed a primary voltage discount of 20¢ per kVA of demand per month.
Minimum:
The demand charge unless a higher minimum is required under contract
to cover special conditions.

ANNUAL MINIMUM: $883,660
Any annual minimum deficiency will be determined during the April billing cycle for
the previous 12-month period. For a customer who has taken service on this schedule for
less than 12 months, the annual minimum will be prorated based on the actual months of
service. The annual minimum will also be prorated if base rates change during the 12-month
period. The annual minimum is based on 916,667 kWh’s per month (11,000,000 kWh’s
annually), plus twelve months multiplied by the monthly minimum demand charge for the
first 3,000 kVa of demand. The annual minimum reflected above is based on base

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 22 of 33

Eighteenth Revision Sheet 25P
Canceling
I.P.U.C. No.28 Seventeenth Revision Sheet 25P

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 25P

EXTRA LARGE GENERAL SERVICE TO CLEARWATER PAPER’S FACILITY - IDAHO
(Three phase, available voltage)

AVAILABLE:
To Clearwater Paper Corporation’s Lewiston, Idaho Facility.

APPLICABLE:
To general service supplied for all power requirements with a demand of not less than
2,500 kVA but not greater than 110,000 kVA. The average of the Customer's demand for
the most recent twelve-month period must fall within these demand limits for service under
this schedule. Customer shall provide and maintain all transformers and other necessary
equipment on its side of the point of delivery and enter into a written contract for five (5)
years or longer.

MONTHLY RATE: The sum of the following demand and energy charges:
Energy Charge:
Block 1 Retail Meter 4.992¢ per kWh
Block 2 Generation Meter 2.456¢ per kWh

Demand Charge as measured at the Retail Meter:
$17,000.00 for the first 3,000 kVA of demand or less.
1st Demand Block: $6.25 per kVA for each additional kVA of demand up to
55,000 kVA.
2nd Demand Block: $3.00 per kVA for each additional kVA of demand above
55,000 kVA.

Primary Voltage Discount as measured at the Retail Meter:
If Customer takes service at 11 kV (wye grounded) or higher, it will be allowed
a primary voltage discount of 20¢ per kVA of demand per month.

Minimum:
The demand charge unless a higher minimum is required under contract to
cover special conditions.

ANNUAL MINIMUM: $753,120
Any annual minimum deficiency will be determined during the April billing cycle for the
previous 12-month period. The annual minimum is based on 916,667 kWh’s per month priced
at the Block 1 per kWh rate, plus twelve months multiplied by the monthly minimum demand
charge for the first 3,000 kVa of demand. The annual minimum reflected above is based on
base revenues only. Any other revenues paid in billed rates (such as the DSM Tariff Rider
Schedule 91) do not factor into the annual minimum calculation.
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 23 of 33

Eighteenth Revision Sheet 31
Canceling
I.P.U.C. No.28 Seventeenth Revision Sheet 31

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 31
PUMPING SERVICE - IDAHO
(Available phase and voltage)

AVAILABLE:
To Customers in the State of Idaho where Company has electric service available.

APPLICABLE:
To service through one meter for pumping water or water effluents, including
incidental power used for other equipment and lighting essential to the pumping operation.
For such incidental service, Customer will furnish any transformers and other necessary
equipment. Customer may be required to enter into a written contract for five (5) years or
longer and will have service available on a continuous basis unless there is a change in
ownership or control of property served.

MONTHLY RATE:
The sum of the following charges:
$18.00 Basic Charge, plus
Energy Charge:
12.218¢ per kWh for the first 85 KWh per kW of demand, and for the next 80
KWh per kW of demand but not more than 3,000 KWh.
10.318¢ per KWh for all additional KWh.

Annual Minimum:
$12.00 per kW of the highest demand established in the current year ending
with the November billing cycle. If no demand occurred in the current year, the
annual minimum will be based on the highest demand in the latest previous
year having a demand.

Demand:
The average kW supplied during the 15-minute period of maximum use during
the month determined, at the option of Company, by a demand meter or
nameplate input rating of pump motor.

SPECIAL TERMS AND CONDITIONS:
If Customer requests the account to be closed by reason of change in ownership or
control of property, the unbilled service and any applicable annual minimum will be
prorated to the date of closing.
Service under this schedule is subject to the Rules and Regulations contained in
this tariff.
The above Monthly Rates are subject to increases or decreases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Fixed Cost
Adjustment Schedule 75, Tax Customer Credit Schedule 76 and Energy Efficiency Rider
Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 24 of 33

Seventeenth Revision Sheet 41
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 41

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 41

COMPANY OWNED STREET LIGHT SERVICE-IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981,
except where Company and customer agree, mercury vapor lamps may be
installed to provide compatibility with existing light sources.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application.

MONTHLY RATE:

Pole Facility
Fixture Metal Standard
& Size Wood Pedestal Direct Developer
(Lumens) No Pole Pole Base Burial Contributed
Code Rate Code Rate Code Rate Code Rate Code Rate

Single Mercury Vapor

7000 411 $ 19.68 416 $ 19.68

*Not available to new customers accounts, or locations.
#Decorative Curb.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 25 of 33

Seventeenth Revision Sheet 42
Canceling
I.P.U.C. No. 28 Sixteenth Revision Sheet 42

AVISTA CORPORATION
dba Avista Utilities
Issued February 1, 2023 Effective September 1, 2024

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 42

COMPANY OWNED STREET LIGHT SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and
thoroughfares upon receipt of an authorized application. Closed to new
installations of sodium vapor lamps as of January 1, 2018, except where
Company and customer agree, sodium vapor lamps may be installed to provide
compatibility with existing light sources.

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
50W 235 $13.87 234# $17.32
100W 434# $18.19
100W 431/435 $16.88 432 $31.87 433 $31.87 436 $17.67
200W 531/535 $27.96 532 $42.91 533 $42.91 536 $28.81
250W 631/635 $32.83 632 $47.79 633 $47.79 636 $33.67
400W 831/835 $49.27 832 $64.25

Single High-Pressure Sodium Vapor
(Nominal Rating in Watts)
100W 446 $35.49
200W 545 $55.94 542 $72.69 546 $56.76
#Decorative Curb

Decorative Sodium Vapor
100W Granville 474* $32.91
100W Post Top 484* $31.59
100W Kim Light 438** $18.20

*16' fiberglass pole
**25' fiberglass pole
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 26 of 33

Fourteenth Revision Sheet 42A
Canceling
I.P.U.C. No. 28 Thirteenth Revision Sheet 42A

AVISTA CORPORATION
dba Avista Utilities
Issued February 1, 2023 Effective September 1, 2024

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 42A - Continued

MONTHLY RATE:
Metal Standard Pole Facility

Fixture & Size Standard Pedestal Base

Direct Burial
Developer
Contributed Code Rate Code Rate Code Rate Code Rate

Single Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 935L $14.51 434L# $18.19 70W 431/435L $16.88 432L $31.87 433L $31.87 436L $17.67
107W 531/535L $27.96 532L $42.91 533L $42.91 536L $28.81
248W 831/835L $49.27 832L $64.25 833L $64.25 836L $50.09

Double Light Emitting Diode (LED)
(Nominal Rating in Watts)
70W 441L $35.49 442L $50.57 446L $35.49
107W 545L $55.94 542L $72.69 546L $56.76
#Decorative Curb
Decorative LED
70W Granville 475L $25.32 474L* $32.91
70W Post Top 484L* $31.59
70W (30ft Fiberglass Pole) 494L $30.82
70W (35’ Fiberglass Pole) 594L $33.97

*16' fiberglass pole

Custom Street Light Calculation
Customers who choose to add street light fixtures that are outside of the offerings listed above will
be quoted a fixed monthly rate based on the following rate calculation. The three components
detailed below will be added together to develop the new Schedule 42 rate.

Step 1 – The capital component will be determined by multiplying an engineering estimate of the
installed cost of the new light component, or fixture, by the Capital Recovery Factor of 11.468%.

Step 2 – The maintenance component will either be the embedded maintenance cost of a similar
existing fixture or an engineering estimate of the maintenance cost of a new fixture. The
maintenance component for an existing light can be derived by subtracting the Schedule 46
(energy) light code monthly charge from the same Schedule 44 light code monthly charge
(maintenance and energy).

Step 3 – The energy component will be the energy cost of the same wattage light under Schedule
46.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 27 of 33

Seventeenth Revision Sheet 44
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 44

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 44
CUSTOMER OWNED STREET LIGHT ENERGY AND MAINTENANCE SERVICE -
IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory served by
Company. Closed to new installations effective January 1, 2016.

APPLICABLE:
To annual operation of dusk-to-dawn lighting for public streets and thoroughfares
upon receipt of an authorized application.

MONTHLY RATE: Pole Facility Metal Standard
Fixture & Size
(Lumens) No Pole Pedestal Base

Direct Burial
Developer
Contributed
Code Rate Code Rate Code Rate Code Rate
Single High-Pressure
Sodium Vapor
100W 435 $12.88 432 $12.88
200W 535 $19.42 532 $19.42 250W 635 $21.83 632 $21.83 633 $21.83
400W 835 $34.79 832 $34.80
150W 936 $16.90

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing and owning standards, luminaries
and necessary circuitry and related facilities to connect with Company designated points of
delivery. All such facilities will conform to Company's design, standards and
specifications. Customer is also responsible for painting (if desired) and replacing
damaged pole facilities.
Company will furnish the necessary energy, repairs and maintenance work
including lamp and glassware cleaning and replacement. Repairs and maintenance work
will be performed by Company during regularly scheduled working hours.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 28 of 33

Seventeenth Revision Sheet 45
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 45

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 45

CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company. Closed to new installations as of November 24, 1981, except
where Company and customer agree, mercury vapor lamps may be installed to
provide compatibility with existing light sources.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:
Per Luminaire
Dusk to
Fixture Dawn
& Size Service
(Lumens) Code Rate

Mercury Vapor
10000 515 $ 9.47
20000# 615 17.19
#Also includes Metal Halide.

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will
be provided.

Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule
91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 29 of 33

Seventeenth Revision Sheet 46
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 46

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 46
CUSTOMER OWNED STREET LIGHT ENERGY SERVICE - IDAHO
HIGH-PRESSURE SODIUM VAPOR
(Single phase and available voltage)

AVAILABLE:
To agencies of local, state, or federal governments in all Idaho territory
served by Company.

APPLICABLE:
To annual operation of lighting for public streets and thoroughfares upon
receipt of an authorized application.

MONTHLY RATE:

Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

High-Pressure Sodium Vapo
(Nominal Rating in Watts)
100W 435 $ 5.87
200W 535 10.96
250W 635 13.48
310W 735 16.02
400W 835 20.45
150W 935 8.46

LED
01 – 10W 005L $ 0.26
11 – 20W 015L 0.65
21 – 30W 025L 1.16
31 – 40W 035L 1.68
41 – 50W 045L 2.07
51 – 60W 055L 2.58
61 – 70W 065L 2.97
71 – 80W 075L 3.48
81 – 90W 085L 4.00
91 – 100W 095L 4.39
101 – 110W 105L 4.91

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 30 of 33

Issued February 1, 2023 Effective September 1, 2024

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

Sixth Revision Sheet 46A
Canceling
I.P.U.C. No.28 Fifth Revision Sheet 46A

AVISTA CORPORATION
d/b/a Avista Utilities

SCHEDULE 46A - Continued

MONTHLY RATE:
Fixture Per Luminaire
& Size Dusk to Dawn Service
(Lumens) Code Rate

111 - 120W 115L $ 5.29
121 - 130W 125L 5.81
131 - 140W 135L 6.32
141 - 150W 145L 6.71
151 - 160W 155L 7.22
161 - 170W 165L 7.61
171 - 180W 175L 8.13
181 - 190W 185L 8.65
191 - 200W 195L 9.04
201 - 225W 212L 9.94
226 - 250W 237L 11.11

SPECIAL TERMS AND CONDITIONS:
Customer is responsible for financing, installing, owning, maintaining and
replacing all standards, luminaires, and necessary circuitry and related facilities to
connect with Company designated points of delivery. Customer will also provide a
light sensitive relay and/or time switch in order to control the hours that energy will be
provided.
Company is responsible only for the furnishing of energy to the point of
delivery and the billing and accounting related thereto.
Service under this schedule is subject to the Rules and Regulations
contained in this tariff.
The above Monthly Rates are subject to increases as set forth in Tax
Adjustment Schedule 58, Temporary Power Cost Adjustment Schedule 66, Tax
Customer Credit Schedule 76 and Energy Efficiency Rider Adjustment Schedule 91.

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 31 of 33

Seventeenth Revision Sheet 47
Canceling
I.P.U.C. No.28 Sixteenth Revision Sheet 47

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 47

AREA LIGHTING - MERCURY VAPOR - IDAHO
(Single phase and available voltage)

AVAILABLE:
In all Idaho territory served by Company where existing secondary
distribution facilities are of adequate capacity, phase, and voltage.

APPLICABLE:
To annual operation of dusk-to-dawn area lighting with mercury vapor lamps
upon receipt of a Customer contract for five (5) years or more. Mercury vapor
lamps will be available only to those customers receiving service on October 23,
1981.

MONTHLY RATE:
Charge per Unit
Nominal Lumens)
7,000 10,000 20,000

Luminaire (on existing standard) $ 19.68 $ 23.84 $ 33.85

Luminaire and Standard:

30-foot wood pole 24.63 28.81 38.82

Galvanized steel standards:
25 foot 46.57

Monthly Rate
per Pole
Pole Facility
30-foot wood pole $ 8.11
55-foot wood pole 15.70
20-foot fiberglass-direct burial 8.11

Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 32 of 33

Sixteenth Revision Sheet 49
Canceling
I.P.U.C. No.28 Fifteenth Revision Sheet 49

AVISTA CORPORATION
dba Avista Utilities
Issued February 1, 2023 Effective September 1, 2024

Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

SCHEDULE 49

AREA LIGHTING - IDAHO
(Single phase and available voltage)
AVAILABLE:
In all territory served by the Company where existing secondary distribution facilities
are of adequate capacity, phase, and voltage.
APPLICABLE:
To annual operation of dusk-to-dawn area lighting with high-pressure sodium vapor
lamps upon receipt of a Customer contract for five (5) years or more.
MONTHLY RATE:

HIGH PRESSURE SODIUM VAPOR Charge per Unit
(Nominal Rating in Watts)
Luminaire 100W 200W 250W 400W
Cobrahead $15.70 $20.78 $24.00 $30.81
Decorative Curb $15.70

100W Post Top w/16-foot decorative pole $37.90
100W Kim Light w/25-foot fiberglass pole $23.82
400W Flood (No pole) $37.64

LIGHT EMITTING DIODE (LED) Charge per Unit
(Nominal Rating in Watts)
Luminaire 70W 107W 125W 248W
Cobrahead $15.70 $20.78 $30.81
Decorative Curb $15.70

70W Granville w/16-foot decorative pole $41.74
70W Post Top w/16-foot decorative pole $37.90
70W 30ft fiberglass direct buried $30.82
107W 35ft fiberglass direct buried $35.84
125W Flood (No Pole) $19.12
125W Flood (40ft Pole) $32.44
248W Flood (No Pole) $37.64

Pole Facility Monthly Rate per Pole
30-foot wood pole $8.11
40-foot wood pole $13.32
55-foot wood pole $15.66
20-foot fiberglass $8.11
25-foot galvanized steel standard $12.65
30-foot galvanized steel standard* $13.99
25-foot galvanized aluminum standard* $15.45
30-foot fiberglass-pedestal base $38.71
30-foot steel-pedestal base $35.73
35 foot steel direct buried $35.73
Exhibit No. 18
Case No. AVU-E-23-01 J. Miller, Avista
Schedule 2, Page 33 of 33
Effective September 1, 2023
Base Tariff Base Tariff Base Total Billed Percent
Revenue Proposed Revenue Tariff Revenue Total Total Increase on
Line Type of Schedule Under Present General Under Proposed Percent at Present General Net Billed GRC
No.Service Number Rates(1)Increase Rates (1)Increase Rates(2)Increase Impact Revenue
(f)(g)(h)(i)(j)
1 Residential 1 $134,665 $18,298 $152,963 13.6%$119,417 $18,298 $18,298 15.3%
2 General Service 11,12 $43,855 $5,960 $49,815 13.6%$42,057 $5,960 $5,960 14.2%
3 Large General Service 21,22 $47,036 $6,394 $53,430 13.6%$45,426 $6,394 $6,394 14.1%
4 Extra Large General Service 25 $20,704 $2,814 $23,518 13.6%$19,840 $2,814 $2,814 14.2%
5 Clearwater 25P $19,143 $2,602 $21,746 13.6%$18,610 $2,602 $2,602 14.0%
6 Pumping Service 31,32 $6,208 $844 $7,052 13.6%$5,938 $844 $844 14.2%
7 Street & Area Lights 41-49 $4,043 $550 $4,592 13.6%$3,992 $550 $550 13.8%
8 Total $275,654 $37,462 $313,116 13.6%$255,635 $37,462 $37,462 14.7%
Effective September 1, 2024
Base Tariff Base Tariff Base Total Billed Percent
Revenue Proposed Revenue Tariff Revenue Total Total Increase on
Line Type of Schedule Under Present General Under Proposed Percent at Present General Net Billed GRC
No.Service Number Rates(1)Increase Rates (1)Increase Rates(2)Increase Impact Revenue
(f)(g)(h)(i)(j)
1 Residential 1 $152,963 $6,422 $159,385 4.2%$137,714 $6,422 $6,422 4.7%
2 General Service 11,12 $49,815 $2,095 $51,910 4.2%$48,017 $2,095 $2,095 4.4%
3 Large General Service 21,22 $53,430 $2,243 $55,673 4.2%$51,820 $2,243 $2,243 4.3%
4 Extra Large General Service 25 $23,518 $987 $24,505 4.2%$22,654 $987 $987 4.4%
5 Clearwater 25P $21,746 $914 $22,660 4.2%$21,212 $914 $914 4.3%
6 Pumping Service 31,32 $7,052 $296 $7,348 4.2%$6,782 $296 $296 4.4%
7 Street & Area Lights 41-49 $4,592 $193 $4,785 4.2%$4,542 $193 $193 4.2%
8 Total $313,116 $13,150 $326,266 4.2%$293,097 $13,150 $13,150 4.5%
(1) Excludes all present rate adjustments.
(2) Includes all present rate adjustments: Schedule 59 - Residential & Farm Energy Rate Adjustment, Schedule 66 - Temporary Power Cost Adjustment, Schedule 74 -
Temporary Tax Reform, and Schedule 91 - Energy Efficiency Rider Adjustment.
AVISTA UTILITIES
IDAHO ELECTRIC, CASE NO. AVU-E-23-01
J. Miller, Avista
AVISTA UTILITIES
IDAHO ELECTRIC, CASE NO. AVU-E-23-01
PRESENT AND PROPOSED RATE COMPONENTS BY SCHEDULE
General Proposed Proposed
Base Tariff Present Present Rate Billing Base Tariff
Sch. Rate Other Adj.(1)Billing Rate Inc/(Decr)Rate Rate
(e)(f)(g)
Residential Service - Schedule 1
Basic Charge $15.00 $15.00 $5.00 $20.00 $20.00
Energy Charge:
First 600 kWhs $0.09770 ($0.01146)$0.08624 ($0.00036)$0.08588 $0.09734
$0.10979 ($0.01243)$0.09736 ($0.00040)$0.09696 $0.10939
General Services - Schedule 11
Basic Charge $18.00 $18.00 $2.00 $20.00 $20.00
Energy Charge:
First 3,650 kWhs $0.10519 ($0.00458)$0.10061 $0.00334 $0.10395 $0.10853
All over 3,650 kWhs $0.07371 ($0.00217)$0.07154 $0.00233 $0.07387 $0.07604
Demand Charge:
20 kW or less no charge no charge no charge no charge
Over 20 kW $6.50/kW $6.50/kW $0.50/kW $7.00/kW $7.00/kW
Large General Service - Schedule 21
Energy Charge:
$0.07398 ($0.00288)$0.07110 $0.00259 $0.07369 $0.07657
$0.06235 ($0.00184)$0.06051 $0.00220 $0.06271 $0.06455
Demand Charge:
50 kW or less $500.00 $500.00 $25.00 $525.00 $525.00
Over 50 kW $6.50/kW $6.50/kW $0.50/kW $7.00/kW $7.00/kW
Primary Voltage Discount $0.20/kW $0.20/kW $0.20/kW $0.20/kW
Extra Large General Service - Schedule 25
Energy Charge:
$0.06447 ($0.00331)$0.06116 $0.00224 $0.06340 $0.06671
All over 500,000 kWhs $0.05401 ($0.00229)$0.05172 $0.00187 $0.05359 $0.05588
Demand Charge:
3,000 kva or less $16,000 $16,000 $1,000 $17,000 $17,000
Over 3,000 kva $5.75/kva $5.75/kva $0.50/kva $6.25/kva $6.25/kva
$0.20/kW $0.20/kW $0.20/kW $0.20/kW
Annual Minimum Present:$848,870 $883,660
Clearwater - Schedule 25P
Energy Charge:
Block 1 Retail kWhs $0.04830 ($0.00145)$0.04685 $0.00162 $0.04847 $0.04992
Demand Charge:
3,000 kva or less $16,000 $16,000 $1,000 $17,000 $17,000
$5.75/kva $5.75/kva $0.50/kva $6.25/kva $6.25/kva
Over 55,000 kva $3.00/kva $3.00/kva $3.00/kva $3.00/kva
$0.20/kW $0.20/kW $0.20/kW $0.20/kW
Annual Minimum Present:$723,300 $753,120
Pumping Service - Schedule 31
Basic Charge $16.00 $16.00 $2.00 $18.00 $18.00
Energy Charge:
$0.11766 ($0.00477)$0.11289 $0.00452 $0.11741 $0.12218
$0.09936 ($0.00345)$0.09591 $0.00382 $0.09973 $0.10318
Temporary Power Cost Adjustment, Schedule 75 - Fixed Cost Adjustment, and Schedule 91 - Energy Efficiency Rider
Effective September 1, 2024
AVISTA UTILITIES
IDAHO ELECTRIC, CASE NO. AVU-E-23-01
PRESENT & PROPOSED RATES OF RETURN BY RATE SCHEDULE
12 MONTHS ENDED JUNE 30, 2022
Present Rates Proposed Rates
Present Present Proposed Proposed
Line Type of Sch.Rate of Relative Rate of Relative
No.Service Number Return ROR ROR
(d)(f)(g)
1 Residential 1 4.10%0.87 6.93%0.91
2 General Service 11,12 5.89%1.24 8.80%1.16
3 Large General Service 21,22 4.18%0.88 6.84%0.90
4 Extra Large General Svc.25 5.80%1.22 9.04%1.19
5 Clearwater 25P 7.53%1.59 11.31%1.49
6 Pumping Service 31,32 3.58%0.75 6.04%0.80
7 Street & Area Lights 41-49 8.04%1.70 9.72%1.28
8 Total 4.74%1.00 7.59%1.00
Exhibit No. 18
Case No. AVU-E-23-01
J. Miller, Avista
AVISTA UTILITIES
IDAHO ELECTRIC, CASE NO. AVU-E-23-01
PRESENT AND PROPOSED RATE COMPONENTS BY SCHEDULE
General Proposed Proposed
Base Tariff Present Present Rate Billing Base Tariff
Sch. Rate Other Adj.(1)Billing Rate Inc/(Decr)Rate Rate
(e)(f)(g)
Residential Service - Schedule 1
Basic Charge $7.00 $7.00 $8.00 $15.00 $15.00
Energy Charge:
First 600 kWhs $0.09234 ($0.01146)$0.08088 $0.00536 $0.08624 $0.09770
$0.10378 ($0.01243)$0.09135 $0.00601 $0.09736 $0.10979
General Services - Schedule 11
Basic Charge $15.00 $15.00 $3.00 $18.00 $18.00
Energy Charge:
First 3,650 kWhs $0.09293 ($0.00458)$0.08835 $0.01226 $0.10061 $0.10519
All over 3,650 kWhs $0.06513 ($0.00217)$0.06296 $0.00858 $0.07154 $0.07371
Demand Charge:
20 kW or less no charge no charge no charge no charge
Over 20 kW $6.00/kW $6.00/kW $0.50/kW $6.50/kW $6.50/kW
Large General Service - Schedule 21
Energy Charge:
$0.06583 ($0.00288)$0.06295 $0.00815 $0.07110 $0.07398
$0.05548 ($0.00184)$0.05364 $0.00687 $0.06051 $0.06235
Demand Charge:
50 kW or less $425.00 $425.00 $75.00 $500.00 $500.00
Over 50 kW $5.50/kW $5.50/kW $1.00/kW $6.50/kW $6.50/kW
Primary Voltage Discount $0.20/kW $0.20/kW $0.20/kW $0.20/kW
Extra Large General Service - Schedule 25
Energy Charge:
$0.05693 ($0.00331)$0.05362 $0.00754 $0.06116 $0.06447
All over 500,000 kWhs $0.04769 ($0.00229)$0.04540 $0.00632 $0.05172 $0.05401
Demand Charge:
3,000 kva or less $14,000 $14,000 $2,000 $16,000 $16,000
Over 3,000 kva $5.00/kva $5.00/kva $0.75/kva $5.75/kva $5.75/kva
$0.20/kW $0.20/kW $0.20/kW $0.20/kW
Annual Minimum Present:$748,030 $848,870
Clearwater - Schedule 25P
Energy Charge:
Block 1 Retail kWhs $0.04273 ($0.00145)$0.04128 $0.00557 $0.04685 $0.04830
Demand Charge:
3,000 kva or less $14,000 $14,000 $2,000 $16,000 $16,000
$5.00/kva $5.00/kva $0.75/kva $5.75/kva $5.75/kva
Over 55,000 kva $2.50/kva $2.50/kva $0.50/kva $3.00/kva $3.00/kva
$0.20/kW $0.20/kW $0.20/kW $0.20/kW
Annual Minimum Present:$638,030 $723,300
Pumping Service - Schedule 31
Basic Charge $13.00 $13.00 $3.00 $16.00 $16.00
Energy Charge:
$0.10392 ($0.00477)$0.09915 $0.01374 $0.11289 $0.11766
$0.08776 ($0.00345)$0.08431 $0.01160 $0.09591 $0.09936
Temporary Power Cost Adjustment, Schedule 75 - Fixed Cost Adjustment, and Schedule 91 - Energy Efficiency Rider
Effective September 1, 2023
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 1 of 10
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 2 of 10

Sixteenth Revision Sheet 101
Canceling
I.P.U.C. No.27 Fifteenth Revision Sheet 101

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar ,Director of Regulatory Affairs

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 $15.00

Charge Per Therm:

Base Rate 35.557¢

Minimum Charge: $15.00

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.

Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 3 of 10
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 4 of 10

Seventeenth Revision Sheet 111
Canceling
I.P.U.C. No.27 Sixteenth Revision Sheet 111

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar , Director of Regulatory Affairs

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 $0.43055
Next 800 $0.31917
Next 9,000 $0.23247
All Over $0.17517

Minimum Charge: $86.11 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.
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 5 of 10
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 6 of 10

Sixteenth Revision Sheet 101
Canceling
I.P.U.C. No.27 Fifteenth Revision Sheet 101

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar ,Director of Regulatory Affairs

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 $15.00

Charge Per Therm:

Base Rate 35.557¢

Minimum Charge: $15.00

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.

Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 7 of 10

Seventeenth Revision Sheet 101
Canceling
I.P.U.C. No.27 Sixteenth Revision Sheet 101

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar ,Director of Regulatory Affairs

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 27.959¢

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.

Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 8 of 10

Seventeenth Revision Sheet 111
Canceling
I.P.U.C. No.27 Sixteenth Revision Sheet 111

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023

Issued by Avista Utilities
By Patrick Ehrbar , Director of Regulatory Affairs

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 $0.43055
Next 800 $0.31917
Next 9,000 $0.23247
All Over $0.17517

Minimum Charge: $86.11 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.
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 9 of 10

Eighteenth Revision Sheet 111
Canceling
I.P.U.C. No.27 Seventeenth Revision Sheet 111

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024

Issued by Avista Utilities
By Patrick Ehrbar , Director of Regulatory Affairs

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 $0.37960
Next 800 $0.32966
Next 9,000 $0.24011
All Over $0.18093

Minimum Charge: $75.92 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.
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 4, Page 10 of 10
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 5, Page 1 of 6
Sixteenth Revision Sheet 101
Canceling
I.P.U.C. No.27 Fifteenth Revision Sheet 101
AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar ,Director of Regulatory Affairs
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 $15.00
Charge Per Therm:
Base Rate 35.557¢
Minimum Charge: $15.00
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.
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 5, Page 2 of 6
Seventeenth Revision Sheet 111
Canceling
I.P.U.C. No.27 Sixteenth Revision Sheet 111
AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2023
Issued by Avista Utilities
By Patrick Ehrbar , Director of Regulatory Affairs
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 $0.43055
Next 800 $0.31917
Next 9,000 $0.23247
All Over $0.17517
Minimum Charge: $86.11 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.
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 5, Page 3 of 6
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 5, Page 4 of 6
Seventeenth Revision Sheet 101
Canceling
I.P.U.C. No.27 Sixteenth Revision Sheet 101
AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024
Issued by Avista Utilities
By Patrick Ehrbar ,Director of Regulatory Affairs
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 27.959¢
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.
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 5, Page 5 of 6

Eighteenth Revision Sheet 111
Canceling
I.P.U.C. No.27 Seventeenth Revision Sheet 111

AVISTA CORPORATION
d/b/a Avista Utilities
Issued February 1, 2023 Effective September 1, 2024

Issued by Avista Utilities
By Patrick Ehrbar , Director of Regulatory Affairs

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 $0.37960
Next 800 $0.32966
Next 9,000 $0.24011
All Over $0.18093

Minimum Charge: $75.92 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.
Exhibit No. 18
Case No. AVU-G-23-01 J. Miller, Avista
Schedule 5, Page 6 of 6
Effective September 1, 2023
Base Tariff Base Tariff Base Total Billed Total Billed Percent
Distribution Revenue Proposed Distribution Revenue Tariff Revenue Total Revenue Increase on
Line Type of Schedule Under Present General Under Proposed Percent at Present General Billed GRC
No.Service Number Rates (1)Increase Rates Increase Revenue
(f)(g)(h)(i)(j)
1 General Service 101 $38,130 $2,771 $40,901 7.3%$79,669 $2,771 $82,440 3.5%
2 Large General Service 111/112 $7,428 $0 $7,428 0.0%$22,929 $0 $22,929 0.0%
3 Interruptible Service 131/132 $0 $0 $0 0.0%$0 $0 $0 0.0%
4 Transportation Service 146 $501 $0 $501 0.0%$487 $0 $487 0.0%
5 Special Contracts 148 $100 $0 $100 0.0%$100 $0 $100 0.0%
6 Total $46,159 $2,771 $48,930 6.0%$103,243 $2,771 $106,013 2.7%
Effective September 1, 2024
Base Tariff Base Tariff Base Total Billed Total Billed Percent
Distribution Revenue Proposed Distribution Revenue Tariff Revenue Total Revenue Increase on
Line Type of Schedule Under Present General Under Proposed Percent at Present General Billed GRC
No.Service Number Rates (1)Increase Rates Increase Revenue
(f)(g)(h)(i)(j)
1 General Service 101 $40,900 $120 $41,020 0.3%$82,440 $120 $82,560 0.1%
2 Large General Service 111/112 $7,428 $0 $7,428 0.0%$22,929 $0 $22,929 0.0%
3 Interruptible Service 131/132 $0 $0 $0 0.0%$0 $0 $0 0.0%
4 Transportation Service 146 $501 $0 $501 0.0%$487 $0 $487 0.0%
5 Special Contracts 148 $100 $0 $100 0.0%$100 $0 $100 0.0%
6 Total $48,929 $120 $49,049 0.2%$106,013 $120 $106,133 0.1%
(1) Excludes Schedule 150 - Purchased Gas Cost Adjustment, Schedule 155 - Gas Rate Adjustment, Schedule 175 - Decoupling & Schedule 191 - DSM
(2) Includes Schedule 150 - Purchased Gas Cost Adjustment, Schedule 155 - Gas Rate Adjustment, Schedule 175 - Decoupling, & Schedule 191 - DSM
Exhibit No. 18
Case No. AVU-G-23-01
J. Miller, Avista
Proposed
Present Base Present General Proposed Base
Distribution Present Revised Billing Present Rate Billing Distribution
Type of Service Rate Schedule 172 Base Rates Rate Adj.(1)Billing Rate Inc/(Decr)Rate Rate
(a)(b)(c)(d)(e)(f)(g)(h)(i)
General Service - Schedule 101
Basic Charge $15.00 $15.00 $5.00 $20.00 $20.00
Usage Charge:
All therms $0.35557 $0.00000 $0.35557 $0.59787 $0.95344 ($0.07598)$0.87746 $0.27959
Large General Service - Schedule 111
Usage Charge:
First 200 therms $0.43055 $0.00000 $0.43055 $0.59667 $1.02722 ($0.05095)$0.97627 $0.37960
200 - 1,000 therms $0.31917 $0.00000 $0.31917 $0.59667 $0.91584 $0.01049 $0.92633 $0.32966
1,000 - 10,000 therms $0.23247 $0.00000 $0.23247 $0.59667 $0.82914 $0.00764 $0.83678 $0.24011
All over 10,000 therms $0.17517 $0.00000 $0.17517 $0.59667 $0.77184 $0.00576 $0.77760 $0.18093
Minimum Charge:
per month $86.11 $86.11 ($10.19)$75.92 $75.92
per therm $0.00000 $0.00000 $0.00000 $0.59667 $0.59667 $0.59667 $0.00000
Interruptible Service - Schedule 131
Usage Charge:
All Therms $0.20379 $0.00000 $0.20379 $0.36885 $0.57264 $0.57264 $0.20379
Transportation Service - Schedule 146
Basic Charge $300.00 $300.00 $300.00 $300.00
Usage Charge:
All Therms $0.12232 $0.00000 $0.12232 ($0.00365)$0.11867 $0.11867 $0.12232
AVISTA UTILITIES
IDAHO GAS, CASE NO. AVU-G-23-01
PRESENT AND PROPOSED RATE COMPONENTS BY SCHEDULE
Effective September 1, 2024
(1) Includes Schedule 150 - Purchased Gas Cost Adjustment, Schedule 155 - Gas Rate Adjustment, Schedule 175 - Fixed Cost Adjustment and
Schedule 191 - DSM, Schedule 176 - Tax Customer Credit
Exhibit No. 18
Case No. AVU-G-23-01
J. Miller, Avista
Present Rates Base Proposed Rates
Present Present Tariff Proposed Proposed
Line Type of Sch.Rate of Relative Proposed Rate of Relative
No.Service Number Return ROR ROR
(d)(e)(f)(g)
1 General Service 101 5.96%0.91 7.3%7.26%0.96
2 Large General Service 111/112 9.20%1.41 0.0%9.08%1.20
3 Interruptible Service 131/132 -14.71%0.00 0.0%7.60%1.00
4 Transportation Service 146 11.69%1.79 0.0%11.53%1.52
5 Total 6.54%1.00 6.0%7.60%1.00
Exhibit No. 18
Case No. AVU-G-23-01
J. Miller, Avista
Proposed
Present Base Present General Proposed Base
Distribution Present Revised Billing Present Rate Billing Distribution
Type of Service Rate Schedule 172 Base Rates Rate Adj.(1)Billing Rate Inc/(Decr)Rate Rate
(a)(b)(c)(d)(e)(f)(g)(h)(i)
General Service - Schedule 101
Basic Charge $7.00 $7.00 $8.00 $15.00 $15.00
Usage Charge:
All therms $0.44001 $0.00000 $0.44001 $0.59787 $1.03788 ($0.08444)$0.95344 $0.35557
Large General Service - Schedule 111
Usage Charge:
First 200 therms $0.51135 $0.00000 $0.51135 $0.59667 $1.10802 ($0.08080)$1.02722 $0.43055
200 - 1,000 therms $0.30257 $0.00000 $0.30257 $0.59667 $0.89924 $0.01660 $0.91584 $0.31917
1,000 - 10,000 therms $0.22038 $0.00000 $0.22038 $0.59667 $0.81705 $0.01209 $0.82914 $0.23247
All over 10,000 therms $0.16606 $0.00000 $0.16606 $0.59667 $0.76273 $0.00911 $0.77184 $0.17517
Minimum Charge:
per month $102.27 $102.27 ($16.16)$86.11 $86.11
per therm $0.00000 $0.00000 $0.00000 $0.59667 $0.59667 $0.59667 $0.00000
Interruptible Service - Schedule 131
Usage Charge:
All Therms $0.20379 $0.00000 $0.20379 $0.36885 $0.57264 $0.57264 $0.20379
Transportation Service - Schedule 146
Basic Charge $300.00 $300.00 $300.00 $300.00
Usage Charge:
All Therms $0.12232 $0.00000 $0.12232 ($0.00365)$0.11867 $0.11867 $0.12232
AVISTA UTILITIES
IDAHO GAS, CASE NO. AVU-G-23-01
PRESENT AND PROPOSED RATE COMPONENTS BY SCHEDULE
Effective September 1, 2023
(1) Includes Schedule 150 - Purchased Gas Cost Adjustment, Schedule 155 - Gas Rate Adjustment, Schedule 175 - Fixed Cost Adjustment and
Schedule 191 - DSM, Schedule 176 - Tax Customer Credit
Exhibit No. 18
Case No. AVU-G-23-01
J. Miller, Avista